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- Question Number 1 Points: 5.00/5.00
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- Use the diagram to answer the following question. Which characteristic of a wave is shown at Point A?
- Your Answer
- A. wavelength
- Question Number 2 Points: 5.00/5.00
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- Use the diagram to answer the following question. Which characteristic of a wave is shown at Point B?
- Your Answer
- B. crest
- Question Number 3 Points: 5.00/5.00
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- Which type of wave cannot transmit energy through a vacuum?
- Your Answer
- B. mechanical
- Question Number 4 Points: 5.00/5.00
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- What is the frequency in vibrations per second of a 200 hertz wave?
- Your Answer
- C. 200
- Question Number 5 Points: 5.00/5.00
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- What is the standard unit of frequency?
- Your Answer
- B. hertz
- Question Number 6 Points: 5.00/5.00
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- Use the diagram to answer the following question. Which characteristic of a wave is shown at Point C?
- Your Answer
- C. trough
- Question Number 7 Points: 5.00/5.00
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- In which type of wave does the medium move parallel to the direction of the energy transport?
- Your Answer
- B. longitudinal wave
- Question Number 8 Points: 5.00/5.00
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- Which equation will give you the speed of a wave?
- Your Answer
- C. speed = frequency x wavelength
- Question Number 9 Points: 5.00/5.00
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- How does the medium move in relation to the direction of energy transport in a transverse wave?
- Your Answer
- A. perpendicular
- Question Number 10 Points: 5.00/5.00
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- Which type of wave is characterized by circular motion?
- Your Answer
- D. surface wave
- Question Number 11 Points: 5.00/5.00
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- How fast is a wave moving if it has a frequency of 10 Hz and there are 4 meters between crests?
- Your Answer
- A. 40 m/s
- Question Number 12 Points: 5.00/5.00
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- The distance between crests on a wave is the
- Your Answer
- A. wavelength
- Question Number 13 Points: 2.00/2.00
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- Amplitude and energy are inversely related, meaning that a high-energy wave has low amplitude and a low-energy wave has high amplitude.
- Your Answer
- False
- Question Number 14 Points: 5.00/5.00
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- If a wave has amplitude of 0.2 meters, a wavelength of 0.5 meters, and a frequency of 32 Hz, at what speed is it moving?
- Your Answer
- B. 16 m/s
- Question Number 15 Points: 5.00/5.00
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- Which two factors are needed in order to calculate the speed of a wave?
- Your Answer
- A. frequency and wavelength
- Question Number 16 Points: 2.00/2.00
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- Seismic waves are mechanical waves.
- Your Answer
- True
- Question Number 17 Points: 2.00/2.00
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- The amount of energy transported by a wave is most closely related to the wavelength of the wave.
- Your Answer
- False
- Question Number 18 Points: 5.00/5.00
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- What is the frequency of a wave that has a wavelength of 4 meters and a speed of 40 m/s?
- Your Answer
- C. 10 Hz
- Question Number 19 Points: 5.00/5.00
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- In which type of wave does the medium move perpendicular to the direction of energy transport?
- Your Answer
- D. transverse wave
- Question Number 20 Points: 2.00/2.00
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- Seismic waves are waves that move through the Earth as a result of an earthquake.
- Your Answer
- True
- Question Number 1 Points: 5.00/5.00
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- During destructive interference, two waves moving through the same medium will
- Your Answer
- C. cancel out each other
- Question Number 2 Points: 5.00/5.00
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- Which of the following is the best definition of refraction?
- Your Answer
- C. change in wave direction due to a change in wave speed
- Question Number 3 Points: 2.00/2.00
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- The Doppler Effect means that all observers of a moving wave source detect the same wave frequency.
- Your Answer
- False
- Question Number 4 Points: 2.00/2.00
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- A standing wave is a wave that appears fixed or stationary in space.
- Your Answer
- True
- Question Number 5 Points: 2.00/2.00
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- A standing wave is a wave that travels through space indefinitely.
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- False
- Question Number 6 Points: 5.00/5.00
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- The diagram shows two original waves interfering with each other to produce a combined waveform. The two original waves, shown on the left side of the image, are ___________.
- Your Answer
- C. out of phase with each other
- Question Number 7 Points: 5.00/5.00
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- What type of wave interference is shown in the diagram?
- Your Answer
- C. destructive
- Question Number 8 Points: 0.00/5.00
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- If two waves are out of phase with each other and are moving through the same medium, they will undergo __________ interference.
- Your Answer
- D. constructive
- Question Number 9 Points: 5.00/5.00
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- Which of the following is the best definition of reflection?
- Your Answer
- D. bouncing back of a wave into its original medium
- Question Number 10 Points: 5.00/5.00
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- Under the Doppler Effect, an observer behind a moving wave source observes
- Your Answer
- C. decreased wave frequency
- Question Number 11 Points: 5.00/5.00
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- Police radar works to detect speeding cars by use of
- Your Answer
- B. the Doppler Effect
- Question Number 12 Points: 5.00/5.00
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- If a Doppler radar weather report indicates that clouds are approaching you, the waves received by the Doppler radar must be___________ the waves sent out by the radar.
- Your Answer
- B. higher in frequency than
- Question Number 13 Points: 5.00/5.00
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- If two waves are in phase with one another and are moving through the same medium, they will undergo ________ interference.
- Your Answer
- D. constructive
- Question Number 14 Points: 2.00/2.00
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- We can use the Doppler Effect to study the movements of far away stars and galaxies.
- Your Answer
- True
- Question Number 15 Points: 2.00/2.00
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- If two wave crests amplify each other, then destructive interference has taken place.
- Your Answer
- False
- Question Number 1 Points: 2.00/2.00
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- Sound enters the ear at the inner ear.
- Your Answer
- False
- Question Number 2 Points: 5.00/5.00
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- The pitch of sound is related to the __________ of the sound waves.
- Your Answer
- A. frequency
- Question Number 3 Points: 5.00/5.00
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- The loudness of sound is related to intensity, which is a function of
- Your Answer
- C. amplitude
- Question Number 4 Points: 5.00/5.00
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- Which of the following statements is true about the movement of sound waves?
- Your Answer
- C. they can only travel through a medium
- Question Number 5 Points: 5.00/5.00
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- Heating the air will
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- C. slightly increase the speed of sound
- Question Number 6 Points: 5.00/5.00
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- Sound originates when a disturbance sends a ________ through the surrounding medium.
- Your Answer
- B. vibration
- Question Number 7 Points: 5.00/5.00
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- In which type of material will sound generally travel the fastest?
- Your Answer
- B. solids
- Question Number 8 Points: 5.00/5.00
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- A high-pitch sound has
- Your Answer
- D. a high frequency
- Question Number 9 Points: 2.00/2.00
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- Sound waves travel through air in a pattern of squeezing in and spreading out.
- Your Answer
- True
- Question Number 10 Points: 0.00/5.00
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- Echolocation is based on the use of sound
- Your Answer
- A. resonance
- Question Number 11 Points: 5.00/5.00
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- Which of the following is closest to the speed of sound in air at sea level ?
- Your Answer
- C. 330 m/s
- Question Number 12 Points: 5.00/5.00
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- Which term is used to describe how high or low a sound is?
- Your Answer
- C. pitch
- Question Number 13 Points: 5.00/5.00
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- Which of the following might be a health problem associated with noise pollution?
- Your Answer
- D. all of the above
- Question Number 14 Points: 5.00/5.00
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- In which type of matter do sound waves generally travel the slowest?
- Your Answer
- C. gas
- Question Number 15 Points: 2.00/2.00
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- Noise pollution can be annoying but does not pose any threat to human health.
- Your Answer
- False
- Question Number 1 Points: 5.00/5.00
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- Which of the following statements is true about the nature of light?
- Your Answer
- B. Light has properties of both particles and waves
- Question Number 2 Points: 5.00/5.00
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- Which of the following statements is true about light?
- Your Answer
- C. Light can travel through the vacuum of space
- Question Number 3 Points: 5.00/5.00
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- Within visible light, which color has the lowest frequency, or the longest wavelength?
- Your Answer
- A. red
- Question Number 4 Points: 5.00/5.00
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- We see objects all around us because of ______ light.
- Your Answer
- D. reflected
- Question Number 5 Points: 5.00/5.00
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- Which type of light is restricted to movement in only a given direction?
- Your Answer
- A. polarized
- Question Number 6 Points: 5.00/5.00
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- What is a photon?
- Your Answer
- B. a bundle of electromagnetic energy
- Question Number 7 Points: 2.00/2.00
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- Gamma rays are high-frequency low-energy waves.
- Your Answer
- False
- Question Number 8 Points: 5.00/5.00
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- What is one way that light differs from sound?
- Your Answer
- A. Light can travel through a vacuum
- Question Number 9 Points: 5.00/5.00
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- While sound waves are longitudinal, light waves are
- Your Answer
- A. transverse waves
- Question Number 10 Points: 5.00/5.00
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- If light is polarized, it is
- Your Answer
- C. moving in only a given direction
- Question Number 11 Points: 5.00/5.00
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- Which of the following is the best definition of diffraction?
- Your Answer
- D. a wave changing directions or moving around something in its path
- Question Number 12 Points: 5.00/5.00
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- White light is
- Your Answer
- B. a combination of all the colors of visible light
- Question Number 13 Points: 5.00/5.00
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- The light that humans can perceive with the eye is ______ light.
- Your Answer
- C. visible
- Question Number 14 Points: 2.00/2.00
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- A photon is a massless bundle of electromagnetic energy.
- Your Answer
- True
- Question Number 15 Points: 5.00/5.00
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- A mirage is an example of ________.
- Your Answer
- D. refraction
- Question Number 16 Points: 5.00/5.00
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- Within visible light, which color has the highest frequency, or the shortest wavelength?
- Your Answer
- D. violet
- Question Number 17 Points: 5.00/5.00
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- Which of the following might be an application of polarization?
- Your Answer
- D. all of the above
- Question Number 18 Points: 5.00/5.00
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- Each color of visible light corresponds to a different
- Your Answer
- A. wavelength and frequency
- Question Number 19 Points: 2.00/2.00
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- Radio waves are a part of the electromagnetic spectrum with high wavelengths and low frequencies.
- Your Answer
- True
- Question Number 20 Points: 5.00/5.00
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- When white light is passed through a prism, it will
- Your Answer
- C. disperse into the separate colors of the visible light spectrum
- Question Number 1 Points: 5.00/5.00
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- What is one way that light differs from sound?
- Your Answer
- A. Light can travel through a vacuum
- Question Number 2 Points: 5.00/5.00
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- Which of the following statements is true about the movement of sound waves?
- Your Answer
- C. they need a medium through which to be transmitted
- Question Number 3 Points: 5.00/5.00
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- How are frequency and period related to each other?
- Your Answer
- C. They are reciprocals of each other
- Question Number 4 Points: 2.00/2.00
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- A photon is a massless bundle of electromagnetic energy.
- Your Answer
- True
- Question Number 5 Points: 5.00/5.00
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- What is the speed of a wave that has a frequency of 45 Hz and a wavelength of 0.1 meters?
- Your Answer
- B. 4.5 m/s
- Question Number 6 Points: 5.00/5.00
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- Which of the following is an example of a mechanical wave?
- Your Answer
- B. sound
- Question Number 7 Points: 0.00/5.00
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- Which of the following is an example of electromagnetic waves in nature?
- Your Answer
- C. seismic waves
- Question Number 8 Points: 5.00/5.00
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- Another name for destructive interference is
- Your Answer
- A. cancellation
- Question Number 9 Points: 5.00/5.00
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- During constructive interference, two waves travel through the same medium and the effects of the first wave are ___________ the effects of the second wave.
- Your Answer
- B. added to
- Question Number 10 Points: 5.00/5.00
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- All the colors of visible light can be combined to form
- Your Answer
- D. white light
- Question Number 11 Points: 2.00/2.00
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- Reflection occurs with light waves but not with sound or water waves.
- Your Answer
- False
- Question Number 12 Points: 5.00/5.00
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- Which of the following is the best definition of reflection?
- Your Answer
- D. bouncing back of a wave into its original medium
- Question Number 13 Points: 2.00/2.00
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- The amount of energy transported by a wave is most closely related to the wavelength of the wave.
- Your Answer
- False
- Question Number 14 Points: 0.00/2.00
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- The ear drum vibrates when struck by sound waves and directly sends a message to the brain that is then recognized as sound.
- Your Answer
- True
- Question Number 15 Points: 5.00/5.00
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- Under the Doppler Effect, an observer behind a moving wave source observes
- Your Answer
- C. decreased wave frequency
- Question Number 16 Points: 5.00/5.00
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- Police radar works to detect speeding cars by use of
- Your Answer
- B. the Doppler Effect
- Question Number 17 Points: 5.00/5.00
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- In nature, waves are observed in
- Your Answer
- D. water, light, and sound
- Question Number 18 Points: 5.00/5.00
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- If a wave has amplitude of 0.2 meters, a wavelength of 0.5 meters, and a frequency of 32 Hz, at what speed is it moving?
- Your Answer
- B. 16 m/s
- Question Number 19 Points: 5.00/5.00
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- Refraction of sound waves often takes place when
- Your Answer
- A. there are temperature differences in air
- Question Number 20 Points: 2.00/2.00
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- Visible light is the part of the electromagnetic spectrum between infrared and ultraviolet light.
- Your Answer
- True
- Question Number 21 Points: 5.00/5.00
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- Which of the following statements is true about the nature of light?
- Your Answer
- B. Light has properties of both particles and waves
- Question Number 22 Points: 2.00/2.00
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- Under the Doppler Effect, if the source of a wave is moving, it must be changing the frequency of the wave.
- Your Answer
- False
- Question Number 23 Points: 5.00/5.00
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- During constructive interference, two waves moving through the same medium will
- Your Answer
- B. amplify each other
- Question Number 24 Points: 5.00/5.00
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- Which of the following is closest to the speed at sound in air at sea level?
- Your Answer
- C. 330 m/s
- Question Number 25 Points: 5.00/5.00
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- What is a photon?
- Your Answer
- B. a bundle of electromagnetic energy
- Question Number 26 Points: 5.00/5.00
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- Which behavior of waves should the designers of concert halls and auditoriums study in order to ensure best sound quality?
- Your Answer
- B. reflection
- Question Number 27 Points: 5.00/5.00
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- Sound will not travel through
- Your Answer
- A. a vacuum
- Question Number 28 Points: 5.00/5.00
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- An echo is an example of
- Your Answer
- B. a reflection
- Question Number 29 Points: 5.00/5.00
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- Which of the following best defines amplitude?
- Your Answer
- D. one-half the height between the crest and the trough
- Question Number 30 Points: 5.00/5.00
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- Dispersion is the separation of white light into separate colors by
- Your Answer
- A. differences in wavelength
- Question Number 31 Points: 2.00/2.00
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- Noise pollution can lead to the disruption of speech communication in children.
- Your Answer
- True
- Question Number 32 Points: 5.00/5.00
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- Water waves change direction when they encounter water of different depths and begin to move at different wave speeds. This is called
- Your Answer
- D. refraction
- Question Number 33 Points: 5.00/5.00
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- The light we see coming from the moon is _________ light from the sun.
- Your Answer
- A. reflected
- Question Number 34 Points: 5.00/5.00
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- Where is visible light found on the electromagnetic spectrum?
- Your Answer
- C. in between infrared and ultraviolet light
- Question Number 35 Points: 5.00/5.00
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- What type of wave is associated with earthquakes?
- Your Answer
- C. seismic waves
- Question Number 1 Points: 5.00/5.00
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- Which of the following is the correct unit power is measured in?
- Your Answer
- B. Watt
- Question Number 2 Points: 5.00/5.00
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- Which of the following correctly identifies the relationship between work, force, and distance?
- Your Answer
- B. W = F x d
- Question Number 3 Points: 5.00/5.00
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- Which of the following are needed to calculate power?
- Your Answer
- D. work and time
- Question Number 4 Points: 5.00/5.00
- Question Text
- Which of the following is the scientific description of work?
- Your Answer
- C. Work is the transfer of energy when a force makes an object move.
- Question Number 5 Points: 5.00/5.00
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- Which of the following is transferred to an object when work is done?
- Your Answer
- B. energy
- Question Number 6 Points: 5.00/5.00
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- Which of the following is the correct unit for force?
- Your Answer
- D. Newton
- Question Number 7 Points: 5.00/5.00
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- Which of the following descriptions show work being done?
- Your Answer
- D. A person lifting books from the floor to a table.
- Question Number 8 Points: 5.00/5.00
- Question Text
- Which of the following is the correct unit for work?
- Your Answer
- C. Joules
- Question Number 9 Points: 5.00/5.00
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- Which of the following must occur in order for work to be done?
- Your Answer
- B. The object must move.
- Question Number 10 Points: 5.00/5.00
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- Which of the following formulas describes how power, work and time are related?
- Your Answer
- D. Power = Work/Time
- Question Number 11 Points: 5.00/5.00
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- You exert 375 J to move a 45-kg object 5 m. How much force is required?
- Your Answer
- B. 75 N
- Question Number 12 Points: 5.00/5.00
- Question Text
- Which of the following is the rate at which work is done?
- Your Answer
- C. power
- Question Number 13 Points: 5.00/5.00
- Question Text
- Which of the following is required for work to be done on an object?
- Your Answer
- D. In order for work to be done the object must move in the direction of the force and move over a distance.
- Question Number 14 Points: 5.00/5.00
- Question Text
- What does power measure the rate of?
- Your Answer
- C. work
- Question Number 15 Points: 5.00/5.00
- Question Text
- Which of the following is the correct definition of Power?
- Your Answer
- A. Power is the rate at which work is done.
- Question Number 1 Points: 0.00/5.00
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- Which of the following is an example of an incline plane?
- Your Answer
- A. lever
- Question Number 2 Points: 2.00/2.00
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- A machine is something that makes work easier.
- Your Answer
- True
- Question Number 3 Points: 5.00/5.00
- Question Text
- Which of the following is an example of an incline plane?
- Your Answer
- B. handicap ramp into a building
- Question Number 4 Points: 0.00/5.00
- Question Text
- Which of the following is an example of a wheel and axle?
- Your Answer
- B. block and tackle system
- Question Number 5 Points: 0.00/5.00
- Question Text
- Which of the following is an example of a lever?
- Your Answer
- A. knife
- Question Number 6 Points: 5.00/5.00
- Question Text
- A scientist is using a pulley in a laboratory. If the resistance force is 40 Newtons and the effort force is 20 Newtons, what is the mechanical advantage?
- Your Answer
- B. 2
- Question Number 7 Points: 5.00/5.00
- Question Text
- To calculate the mechanical advantage of a lever what two pieces of information do you need?
- Your Answer
- D. the length of the effort arm and the length of the resistance arm
- Question Number 8 Points: 5.00/5.00
- Question Text
- A drill bit is an example of which simple machine?
- Your Answer
- A. screw
- Question Number 9 Points: 5.00/5.00
- Question Text
- A tape dispenser is an example of which simple machine?
- Your Answer
- A. pulley
- Question Number 10 Points: 5.00/5.00
- Question Text
- An axe blade is an example of which simple machine?
- Your Answer
- B. wedge
- Question Number 11 Points: 5.00/5.00
- Question Text
- A playground slide is an example of which simple machine?
- Your Answer
- B. inclined plane
- Question Number 12 Points: 5.00/5.00
- Question Text
- How is mechanical advantage calculated?
- Your Answer
- D. by dividing resistance force by effort force
- Question Number 13 Points: 5.00/5.00
- Question Text
- Which of the following describes effort force?
- Your Answer
- C. force applied to the machine
- Question Number 14 Points: 5.00/5.00
- Question Text
- What do you need to calculate the mechanical advantage of a block and tackle?
- Your Answer
- C. number of rope segments that support the resistance weight
- Question Number 15 Points: 2.00/2.00
- Question Text
- All simple machines are variations of two basic machines.
- Your Answer
- True
- Question Number 16 Points: 5.00/5.00
- Question Text
- A handicap ramp on a building is the example of which simple machine?
- Your Answer
- D. inclined plane
- Question Number 17 Points: 5.00/5.00
- Question Text
- Which of the following is a part of a pair of scissors?
- Your Answer
- D. wedge
- Question Number 18 Points: 5.00/5.00
- Question Text
- Which of the following is an example of a first class lever?
- Your Answer
- D. seesaw
- Question Number 19 Points: 5.00/5.00
- Question Text
- Which of the following correctly describes mechanical advantage?
- Your Answer
- B. Mechanical advantage is the number of times a machine multiplies the effort force.
- Question Number 20 Points: 5.00/5.00
- Question Text
- A doorknob is an example of which simple machine?
- Your Answer
- D. wheel and axle
- Question Number 1 Points: 5.00/5.00
- Question Text
- A pizza cutter is a compound machine made up of what simple machines?
- Your Answer
- A. a wedge and a wheel and axle
- Question Number 2 Points: 5.00/5.00
- Question Text
- Which of the following is a compound machine?
- Your Answer
- B. a can opener
- Question Number 3 Points: 5.00/5.00
- Question Text
- A hoe, used to cultivate the ground, is a compound machine made up of what simple machines?
- Your Answer
- B. a lever and a wedge
- Question Number 4 Points: 2.00/2.00
- Question Text
- The mechanical advantage of a compound machine is related to the mechanical advantage of all the simple machines involved.
- Your Answer
- True
- Question Number 5 Points: 2.00/2.00
- Question Text
- A lawn mower is an example of a compound machine.
- Your Answer
- True
- Question Number 6 Points: 5.00/5.00
- Question Text
- What two simple machines make up an axe?
- Your Answer
- A. a wedge and a lever
- Question Number 7 Points: 0.00/5.00
- Question Text
- The wedge is part of a can opener. What is the purpose of using the wedge?
- Your Answer
- A. It moves.
- Question Number 8 Points: 5.00/5.00
- Question Text
- A pair of scissors is made up of what simple machines?
- Your Answer
- C. lever and wedge
- Question Number 9 Points: 5.00/5.00
- Question Text
- A bicycle is a compound machine made up of which simple machines?
- Your Answer
- D. wheel and axle, gear, lever
- Question Number 10 Points: 2.00/2.00
- Question Text
- A shovel is a compound machine.
- Your Answer
- True
- Question Number 11 Points: 5.00/5.00
- Question Text
- Which of the following explains why a bicycle uses a gear?
- Your Answer
- C. The gear decreases effort force needed.
- Question Number 12 Points: 2.00/2.00
- Question Text
- A compound machine is made of two or more simple machines.
- Your Answer
- True
- Question Number 13 Points: 2.00/2.00
- Question Text
- The mechanical advantage of a compound machine is equal to the one simple machine that has the greatest mechanical advantage.
- Your Answer
- False
- Question Number 14 Points: 2.00/2.00
- Question Text
- A stapler is a compound machine.
- Your Answer
- False
- Question Number 15 Points: 0.00/2.00
- Question Text
- A car is a compound machine.
- Your Answer
- False
- Question Number 16 Points: 5.00/5.00
- Question Text
- A steak knife is made up of which simple machines?
- Your Answer
- D. lever and wedge
- Question Number 17 Points: 2.00/2.00
- Question Text
- A compound machine is made up of one simple machine.
- Your Answer
- False
- Question Number 18 Points: 2.00/2.00
- Question Text
- A bicycle is a compound machine.
- Your Answer
- True
- Question Number 19 Points: 2.00/2.00
- Question Text
- A wheelbarrow is a compound machine.
- Your Answer
- True
- Question Number 20 Points: 0.00/5.00
- Question Text
- Which of the following explains why a bicycle uses the pedals as a lever to move the heavy rider along the sidewalk?
- Your Answer
- C. reduces the resistance force
- Question Number 1 Points: 5.00/5.00
- Question Text
- Which if the following pieces of information are needed to calculate work?
- Your Answer
- B. force and distance
- Question Number 2 Points: 0.00/5.00
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- Which of the following describes the way an object moves when an unbalanced force acts upon it?
- Your Answer
- C. The object will move in the opposite direction of the greater magnitude force.
- Question Number 3 Points: 5.00/5.00
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- Which of the following is the correct formula for calculating power?
- Your Answer
- D. P = W/t
- Question Number 4 Points: 5.00/5.00
- Question Text
- You have done 3,404 J of work with a force of 37 N on a 46-kg object. Over what distance did you do the work?
- Your Answer
- A. 92 m
- Question Number 5 Points: 5.00/5.00
- Question Text
- Which of the following is a compound machine?
- Your Answer
- C. car
- Question Number 6 Points: 2.00/2.00
- Question Text
- Because simple machines are so basic, they do very little good in modern days and are not able to make work easier.
- Your Answer
- False
- Question Number 7 Points: 5.00/5.00
- Question Text
- As work is done what happens to energy?
- Your Answer
- C. Energy is transferred.
- Question Number 8 Points: 5.00/5.00
- Question Text
- Which of the following is calculated by dividing work by time?
- Your Answer
- A. power
- Question Number 9 Points: 0.00/2.00
- Question Text
- A rocking horse is a compound machine.
- Your Answer
- True
- Question Number 10 Points: 5.00/5.00
- Question Text
- Which of the following correctly describes what power measures?
- Your Answer
- A. the rate at which work is done
- Question Number 11 Points: 5.00/5.00
- Question Text
- Which of the following is Joules used to measure?
- Your Answer
- D. work
- Question Number 12 Points: 5.00/5.00
- Question Text
- Which of the following is the correct unit for time when calculating power in watts?
- Your Answer
- D. seconds
- Question Number 13 Points: 0.00/5.00
- Question Text
- Which of the following describes what happens to the amount of work when using a ramp to move a heavy object?
- Your Answer
- A. increase
- Question Number 14 Points: 5.00/5.00
- Question Text
- Which of the following describes something that makes work easier?
- Your Answer
- A. a machine
- Question Number 15 Points: 5.00/5.00
- Question Text
- A stapler is an example of which simple machine?
- Your Answer
- C. lever
- Question Number 16 Points: 0.00/5.00
- Question Text
- Which of the following describes resistance force?
- Your Answer
- B. force used by the machine
- Question Number 17 Points: 5.00/5.00
- Question Text
- What is the mechanical advantage of a machine that uses an input force of 20 Newtons to achieve an output force of 60 Newtons?
- Your Answer
- D. 3
- Question Number 18 Points: 5.00/5.00
- Question Text
- Which of the following is found in an axe?
- Your Answer
- A. wedge
- Question Number 19 Points: 5.00/5.00
- Question Text
- Which of the following contains a wheel and axle?
- Your Answer
- B. bicycle
- Question Number 20 Points: 5.00/5.00
- Question Text
- The lid on a jar is an example of which simple machine?
- Your Answer
- A. screw
- Question Number 21 Points: 2.00/2.00
- Question Text
- A lawn sprinkler is a compound machine.
- Your Answer
- True
- Question Number 22 Points: 2.00/2.00
- Question Text
- A fan is a complex machine.
- Your Answer
- True
- Question Number 23 Points: 5.00/5.00
- Question Text
- Which of the following describes what occurs when energy is transferred and work is being done on an object?
- Your Answer
- B. The object moves.
- Question Number 24 Points: 0.00/5.00
- Question Text
- A pencil sharpener contains which simple machine?
- Your Answer
- B. lever
- Question Number 25 Points: 5.00/5.00
- Question Text
- Which of the following simple machines does a person use when raising a flag up a flagpole?
- Your Answer
- D. pulley
- Question Number 26 Points: 0.00/2.00
- Question Text
- A chair is a compound machine.
- Your Answer
- True
- Question Number 27 Points: 5.00/5.00
- Question Text
- Which of the following describes a compound machine?
- Your Answer
- C. A compound machine is two or more simple machines working together.
- Question Number 28 Points: 5.00/5.00
- Question Text
- Which of the following describes a machine that is made up of a lever and a wedge?
- Your Answer
- B. compound machine
- Question Number 29 Points: 5.00/5.00
- Question Text
- Which of the following describes the mechanical advantage of a compound machine?
- Your Answer
- A. A compound machine's mechanical advantage is determined by the mechanical advantage of the simple machines that make it up.
- Question Number 30 Points: 2.00/2.00
- Question Text
- Your body is a compound machine.
- Your Answer
- True
- Question Number 1 Points: 5.00/5.00
- Question Text
- A neutral atom that gains electrons will have what kind of charge?
- Your Answer
- B. negative
- Question Number 2 Points: 5.00/5.00
- Question Text
- Which of the following would cause an atom to have a positive electric charge?
- Your Answer
- A. having more protons than electrons
- Question Number 3 Points: 5.00/5.00
- Question Text
- If an atom has 2 protons, 3 neutrons, and 3 electrons, what is the electrical charge of the atom?
- Your Answer
- B. negative
- Question Number 4 Points: 5.00/5.00
- Question Text
- Which subatomic particle has no charge?
- Your Answer
- B. neutron
- Question Number 5 Points: 5.00/5.00
- Question Text
- Which subatomic particle has a negative charge?
- Your Answer
- C. electron
- Question Number 6 Points: 5.00/5.00
- Question Text
- Which of the following subatomic particles are found outside the nucleus?
- Your Answer
- B. electron
- Question Number 7 Points: 5.00/5.00
- Question Text
- Which of the following activities would create an electric charge?
- Your Answer
- D. None of the above; electric charge cannot be created or destroyed.
- Question Number 8 Points: 5.00/5.00
- Question Text
- A proton has what type of electrical charge?
- Your Answer
- A. positive
- Question Number 9 Points: 5.00/5.00
- Question Text
- If an atom has 3 protons, 3 neutrons, and 2 electrons, what is the electrical charge of the atom?
- Your Answer
- A. positive
- Question Number 10 Points: 5.00/5.00
- Question Text
- Which of the following two particles are found in the nucleus of an atom?
- Your Answer
- A. protons and neutrons
- Question Number 11 Points: 5.00/5.00
- Question Text
- An electron has what type of electrical charge?
- Your Answer
- B. negative
- Question Number 12 Points: 5.00/5.00
- Question Text
- A neutral atom that loses electrons will have what kind of charge?
- Your Answer
- A. positive
- Question Number 13 Points: 5.00/5.00
- Question Text
- A neutron has what type of electrical charge?
- Your Answer
- C. neutral
- Question Number 14 Points: 5.00/5.00
- Question Text
- Which subatomic particle has a positive charge?
- Your Answer
- D. proton
- Question Number 15 Points: 5.00/5.00
- Question Text
- Which of the following choices best describes how electrons are transferred from one object to another?
- Your Answer
- B. Electrons are transferred when objects come into direct contact with each other
- Question Number 1 Points: 5.00/5.00
- Question Text
- Which of the following correctly describes voltage difference?
- Your Answer
- A. The push that causes charges to move
- Question Number 2 Points: 0.00/5.00
- Question Text
- According to Ohm's law, as resistance increases which of the following would the current do?
- Your Answer
- A. increases
- Question Number 3 Points: 5.00/5.00
- Question Text
- Resistance in wires causes which of the following to occur?
- Your Answer
- C. causes thermal energy
- Question Number 4 Points: 5.00/5.00
- Question Text
- Which of the following describes the measure of the flow of electrical charge?
- Your Answer
- D. amperes
- Question Number 5 Points: 5.00/5.00
- Question Text
- Which of the following creates a voltage difference?
- Your Answer
- A. battery
- Question Number 6 Points: 5.00/5.00
- Question Text
- Which of the following is the tendency for a material to oppose the flow of electrons and change electrical energy into thermal energy?
- Your Answer
- A. resistance
- Question Number 7 Points: 5.00/5.00
- Question Text
- Which of the following describes resistance?
- Your Answer
- B. impedes the flow of electrons
- Question Number 8 Points: 5.00/5.00
- Question Text
- Voltage sources are used to sustain
- Your Answer
- D. the movement of electric charge
- Question Number 9 Points: 5.00/5.00
- Question Text
- Which of the following are voltage sources?
- Your Answer
- D. batteries and wall sockets
- Question Number 10 Points: 5.00/5.00
- Question Text
- Which of the following describes a circuit?
- Your Answer
- D. a closed conduction loop through which an electrical current can flow
- Question Number 11 Points: 5.00/5.00
- Question Text
- A closed conducting loop through which an electrical current can flow is which of the following?
- Your Answer
- B. circuit
- Question Number 12 Points: 5.00/5.00
- Question Text
- Which of the following describes how electric charges flow?
- Your Answer
- C. They flow from high potential to low potential
- Question Number 13 Points: 0.00/5.00
- Question Text
- Which of the following is a common source of voltage difference?
- Your Answer
- D. lightning
- Question Number 14 Points: 5.00/5.00
- Question Text
- Electrical potential that makes a charge move known as which of the following?
- Your Answer
- B. voltage
- Question Number 15 Points: 5.00/5.00
- Question Text
- What does the following statement describe? A current equals the voltage difference divided by the resistance.
- Your Answer
- A. Ohm's law
- Question Number 1 Points: 5.00/5.00
- Question Text
- Which of the following describes the interaction between a south pole and a north pole of a magnet?
- Your Answer
- A. attract
- Question Number 2 Points: 5.00/5.00
- Question Text
- Which of the following would describe the interaction between two north poles of a magnet?
- Your Answer
- B. repel
- Question Number 3 Points: 5.00/5.00
- Question Text
- If a magnet repels a metal object what can you say about the pole of the magnet and the pole of the object?
- Your Answer
- D. The poles are the same.
- Question Number 4 Points: 5.00/5.00
- Question Text
- The strength of the magnetic field around a current-carrying wire is determined by which of the following?
- Your Answer
- A. the amount of current in the wire
- Question Number 5 Points: 5.00/5.00
- Question Text
- Which of the following describes a magnetic field?
- Your Answer
- D. the area where the magnetic force is exerted
- Question Number 6 Points: 5.00/5.00
- Question Text
- The area where the magnetic force is exerted is known as which of the following?
- Your Answer
- C. field
- Question Number 7 Points: 5.00/5.00
- Question Text
- An electromagnet is a temporary magnet due to which of the following?
- Your Answer
- A. The magnet is only present when a current is present
- Question Number 8 Points: 5.00/5.00
- Question Text
- When an electric current is flowing through a wire which of the following is also produced?
- Your Answer
- C. field
- Question Number 9 Points: 5.00/5.00
- Question Text
- Which of the following produces a magnetic field?
- Your Answer
- A. spin of electrons
- Question Number 10 Points: 5.00/5.00
- Question Text
- Which of the following describes the interaction between two south poles of a magnet?
- Your Answer
- B. repel
- Question Number 11 Points: 5.00/5.00
- Question Text
- The direction of the magnetic field is determined by which of the following?
- Your Answer
- D. direction of the current
- Question Number 12 Points: 5.00/5.00
- Question Text
- Which type of magnet is created from an electromagnet?
- Your Answer
- B. temporary
- Question Number 13 Points: 5.00/5.00
- Question Text
- If a magnet is attracted to another magnet what can you say about the pole of the first magnet and the pole of the other magnet?
- Your Answer
- A. The poles are opposite.
- Question Number 14 Points: 5.00/5.00
- Question Text
- Which of the following describes what occurs to the magnetic field produced by a current carrying wire when there is no electric current flowing through the wire?
- Your Answer
- C. there is no magnetic field
- Question Number 15 Points: 5.00/5.00
- Question Text
- Which of the following occurs when the strength of the current flowing through a wire is increases?
- Your Answer
- C. The magnetic field is increased.
- Question Number 1 Points: 5.00/5.00
- Question Text
- Which of the following best describe a generator?
- Your Answer
- C. provides an electrical power output
- Question Number 2 Points: 5.00/5.00
- Question Text
- Electromagnetic induction uses a magnetic field to create which of the following?
- Your Answer
- B. electric current
- Question Number 3 Points: 5.00/5.00
- Question Text
- Which of the following describes electromagnetic induction?
- Your Answer
- B. moving a loop of wire through a magnetic field to create an electric current
- Question Number 4 Points: 5.00/5.00
- Question Text
- A wind turbine captures the mechanical energy of wind and uses a generator to produce:
- Your Answer
- A. electrical energy
- Question Number 5 Points: 5.00/5.00
- Question Text
- Which of the following describes the production of an electric current by moving a loop of wire through a magnetic field or moving a magnet through a wire loop?
- Your Answer
- C. electromagnetic induction
- Question Number 6 Points: 5.00/5.00
- Question Text
- Electromagnetic Induction states that moving a magnet through a loop of wire creates which of the following?
- Your Answer
- A. electric current
- Question Number 7 Points: 5.00/5.00
- Question Text
- Which of the following can provide the energy source for a generator?
- Your Answer
- D. all of the above
- Question Number 8 Points: 2.00/2.00
- Question Text
- According to Faraday's law, voltage cannot be changed by changing the magnetic field strength.
- Your Answer
- False
- Question Number 9 Points: 5.00/5.00
- Question Text
- Which of the following is a type of generator in a car?
- Your Answer
- A. alternator
- Question Number 10 Points: 5.00/5.00
- Question Text
- When a generator rotates a coil of wire in a magnetic field, which of the following is produced?
- Your Answer
- D. electric current
- Question Number 11 Points: 5.00/5.00
- Question Text
- Which of the following is a device that increases or decreases the voltage of an alternating current?
- Your Answer
- D. transformer
- Question Number 12 Points: 5.00/5.00
- Question Text
- In a generator, mechanical energy is converted to:
- Your Answer
- A. electrical energy
- Question Number 13 Points: 5.00/5.00
- Question Text
- When generators use mechanical energy, what type of energy is produced?
- Your Answer
- B. electrical energy
- Question Number 14 Points: 2.00/2.00
- Question Text
- Faraday's law calculates voltage.
- Your Answer
- True
- Question Number 15 Points: 5.00/5.00
- Question Text
- Electromagnetic induction creates electrical energy by using which of the following types of energy?
- Your Answer
- D. mechanical energy
- Question Number 16 Points: 5.00/5.00
- Question Text
- A generator produces:
- Your Answer
- D. alternating current
- Question Number 17 Points: 5.00/5.00
- Question Text
- A step-down transformer has more loops on which coil?
- Your Answer
- A. primary coil
- Question Number 18 Points: 5.00/5.00
- Question Text
- Which kind of transformer increases the voltage of an alternating current?
- Your Answer
- B. step-up transformer
- Question Number 19 Points: 0.00/5.00
- Question Text
- Generators use the magnetic field of which of the following to produce an electric current?
- Your Answer
- C. magnetic domain
- Question Number 20 Points: 5.00/5.00
- Question Text
- Which kind of transformer decreases the voltage of an alternating current?
- Your Answer
- A. step-down transformer
- Question Number 1 Points: 5.00/5.00
- Question Text
- An electric motor converts electric energy into what type of energy?
- Your Answer
- D. mechanical
- Question Number 2 Points: 5.00/5.00
- Question Text
- Which of the following describes how an atom becomes negatively charged?
- Your Answer
- C. electrons are transferred to the atom from other atoms through direct contact
- Question Number 3 Points: 5.00/5.00
- Question Text
- What law states that when there is an interaction between charged objects there is a non-contact force which acts over some distance of separation?
- Your Answer
- C. Coulomb's law
- Question Number 4 Points: 5.00/5.00
- Question Text
- Amperes is the measure of which of the following?
- Your Answer
- D. electrical current
- Question Number 5 Points: 5.00/5.00
- Question Text
- Volts is the measure of which of the following
- Your Answer
- B. electrical potential
- Question Number 6 Points: 5.00/5.00
- Question Text
- Which of the following is the unit of measurement for electrical current in a circuit?
- Your Answer
- A. amperes
- Question Number 7 Points: 5.00/5.00
- Question Text
- Which of the following describes the charge of an atom before any electrons are transferred?
- Your Answer
- D. neutral charge
- Question Number 8 Points: 5.00/5.00
- Question Text
- An electromagnetic produces mechanical energy from which of the following?
- Your Answer
- D. electrical energy
- Question Number 9 Points: 5.00/5.00
- Question Text
- Which of the following describes the principle of conservation of charge?
- Your Answer
- C. charge cannot be created or destroyed, just transferred
- Question Number 10 Points: 5.00/5.00
- Question Text
- The electrical current in a circuit is measured in which of the following units?
- Your Answer
- C. amperes
- Question Number 11 Points: 5.00/5.00
- Question Text
- Which of the following has only one loop for a current to flow through?
- Your Answer
- B. series
- Question Number 12 Points: 5.00/5.00
- Question Text
- What surrounds a magnet?
- Your Answer
- D. magnetic field
- Question Number 13 Points: 5.00/5.00
- Question Text
- A 3.5 V battery is connected to a wire with a resistance of 2.5 Ohms. Use Ohm's law to calculate the current for this wire.
- Your Answer
- B. 1.4 A
- Question Number 14 Points: 5.00/5.00
- Question Text
- As the magnetic field increases, which of the following also increases?
- Your Answer
- B. force
- Question Number 15 Points: 5.00/5.00
- Question Text
- An iron nail that comes in contact with a strong magnet may become a magnet itself because of which of the following?
- Your Answer
- A. magnetic domains
- Question Number 16 Points: 5.00/5.00
- Question Text
- One of the ways that a magnet's domain could become unaligned is which of the following?
- Your Answer
- D. by dropping it
- Question Number 17 Points: 5.00/5.00
- Question Text
- Which of the following describe a magnet that only has a field when current is present?
- Your Answer
- C. electromagnet
- Question Number 18 Points: 5.00/5.00
- Question Text
- An electromagnet converts electrical energy into what type of energy?
- Your Answer
- A. mechanical energy
- Question Number 19 Points: 5.00/5.00
- Question Text
- Which of the following is a magnet only when a current is present?
- Your Answer
- B. electromagnet
- Question Number 20 Points: 5.00/5.00
- Question Text
- Which of the following is one way that an electric motor's rotation speed can be controlled?
- Your Answer
- B. by varying the amount of current flowing to the motor
- Question Number 21 Points: 5.00/5.00
- Question Text
- A loop of wire moving through a magnetic field will create which of the following?
- Your Answer
- B. An electric current
- Question Number 22 Points: 5.00/5.00
- Question Text
- According to Ohm's law as the current increases the voltage must do which of the following?.
- Your Answer
- A. increases
- Question Number 23 Points: 2.00/2.00
- Question Text
- According to Faraday's law, voltage can be changed by moving magnets away from the coil of wire.
- Your Answer
- True
- Question Number 24 Points: 5.00/5.00
- Question Text
- Which law describes the interactions between charged particles when they are not in contact?
- Your Answer
- B. Coulomb's law
- Question Number 25 Points: 5.00/5.00
- Question Text
- An electric current is produced by which of the following processes?
- Your Answer
- D. Electromagnetic induction
- Question Number 26 Points: 5.00/5.00
- Question Text
- Which of the following types of transformers decreases the voltage?
- Your Answer
- A. step-down transformer
- Question Number 27 Points: 5.00/5.00
- Question Text
- Which of the following is the correct term for the alignment of atoms in a magnet?
- Your Answer
- D. domain
- Question Number 28 Points: 5.00/5.00
- Question Text
- A 1.5 v battery is connected to a wire with a 1.1 A current flowing through it. Use Ohm's law to calculate the resistance of the wire.
- Your Answer
- D. 1.36 Ohm
- Question Number 29 Points: 5.00/5.00
- Question Text
- An electric motor must have which of the following in order to work?
- Your Answer
- B. power source
- Question Number 30 Points: 0.00/5.00
- Question Text
- An electric motor uses what type of current?
- Your Answer
- B. alternating
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