# Physical Science: Waves, Sound, and Light, Book O

## Chapter 1: Waves

### Waves

 1. In __________ waves, matter in the medium moves forward and backward in the same direction the wave travels. Need a Hint? A) transverse B) compressional C) radio D) ocean 2. The bending of a light wave as it moves from one medium into another is called __________ . Need a Hint? A) reflection B) interference C) diffraction grating D) refraction 3. The matter through which a mechanical wave travels is called a __________ . Need a Hint? A) wave relay B) medium C) substrate D) conductor 4. Waves that use matter to transfer energy are called __________ waves. Need a Hint? A) electromagnetic B) medium C) mass D) mechanical 5. Sound waves cannot travel in outer space because __________ . Need a Hint? A) the gas molecules in outer space air are too far apart B) they are electromagnetic waves C) they cannot travel through a medium D) they are mechanical waves 6. Which of the following is true? Need a Hint? A) You can hear sounds from a room you haven't entered because of the refraction of sound waves. B) You can see into a room that is around a corner because of the extensive diffraction of light waves. C) You can see into a room that is around a corner because of the refraction of light waves. D) You can hear sounds from a room you haven't entered because of the diffraction of sound waves. 7. The process in which two waves overlap and form a new wave is called __________ . Need a Hint? A) wave joining B) interference C) diffraction D) refraction 8. Reflection occurs when a wave __________ . Need a Hint? A) compresses air particles as it travels B) bends and changes speeds as it travels C) causes ripples in a pool of water D) strikes an object and bounces off of it 9. What type of waves do not require matter to carry energy? Need a Hint? A) compressional B) transverse C) mechanical D) electromagnetic 10. What is the region of a compressional wave where particles are far apart called? Need a Hint? A) rarefaction B) crest C) trough D) rest position 11. __________ is a measure of the energy in a wave. Need a Hint? A) Wave velocity B) Wavelength C) Amplitude D) Frequency 12. In __________ waves, matter in the medium moves back and forth at right angles to the direction the wave travels. Need a Hint? A) transverse B) light C) compressional D) sound 13. A __________ is a repeating disturbance that transfers energy through matter or open space. Need a Hint? A) medium B) conductor C) frequency D) wave 14. Which of the following has the shortest wavelength? Need a Hint? A) green light B) radio waves C) infared radiation D) X rays 15. __________ is the distance from the top of one crest of a transverse wave to the top of the next crest in that wave. Need a Hint? A) Wavelength B) Amplitude C) Frequency D) Wave velocity 16. Which of the following does a transverse wave have? Need a Hint? A) rarefactions B) ability to travel through space C) compressions D) amplitude 17. The __________ is an imaginary line perpendicular to the surface of a medium where a wave strikes it. Need a Hint? A) incidence B) normal C) diffraction grating D) interference 18. Why can't you see your reflection in a brick wall? Need a Hint? A) Reflection of light from a rough surface is regular reflection. B) No light is reflected from a brick wall. C) Light rays are reflected in many directions from the uneven surface. D) Light rays are reflected in only one direction from the rough surface. 19. The __________ of a wave is how many wavelengths pass a fixed point each second. Need a Hint? A) amplitude B) velocity C) compression speed D) frequency 20. __________ occurs when the crest of one wave overlaps the trough of another wave. Need a Hint? A) Constructive interference B) Amplitude shift interference C) Wave cancellation D) Destructive interference
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