13.sound

1. An echo is.............

1) Sound that bounces in all directions
2) Sound that DOES NOT bounce back to you
3) A figment of your imagination
4) Sound bouncing back to you off a solid object

2. The Doppler effect occurs when

1) The waves are moving like the ripples in a pond from a rock
2) A moving object is emitting sound continuously.
3) There is a rainbow present in the sky.
4) The waves are really distorted in the front where the sound is and not in the back after the object moves away

3. Sound waves CAN move in space

1) Both true and false
2) True
3) Neither true or false
4) False

4. Sound vibrations travel best in

1) Space
2) Solids
3) Liquids
4) Gases

5. Sound travels through waves called

1) Sea Waves
2) Longitudinal
3) Doppler Waves
4) Transverse Waves

6. Sound travels through _______________ which the vibration compresses

1) Matter
2) Substances
3) Atoms
4) Anti-Matter

7. Longitudinal Waves are waves that travel

1) Up and down like the waves of an ocean
2) Side to side in one direction
3) Only when there is very dense material around
4) Side to side in two different directions at once

8. Dolphins and Bats use for..................

1) No Echos at all
2) Echo Location
3) Echo Reverberation
4) Echo Detection

9. Compressional waves travel in.........................

1) No direction at all they don't move
2) In many different directions at the same time
3) The opposite direction as the sound vibrations
4) The same direction as the Sound vibrations

10. Sound travels through.........................

1) Matter that has no density at all
2) Denser material
3) Less Dense material
4) Density does not matter with sound

11. The greatest distance the particles in a wave rise and fall from their rest position

1) Hertz
2) Amplitude
3) Velocity
4) Intensity

12. Means the same as one cycle of a wave

1) Intensity
2) Velocity
3) Frequency
4) Hertz

13. Decibel is.................

1) The unit of measure used to gauge the loudness
2) The unit of measure used to gauge frequency
3) The unit of measure to check tone quality
4) The unit of measure that is used to check wave length

14. Pitch is directly related to what?

1) Decibels
2) It does not have a relation
3) Velocity
4) Frequency

15. Tone quality is the difference between the sounds of the SAME

1) Amplitude and Intensity
2) Velocity and Loudness
3) Pitch and Loudness
4) Pitch and Velocity

16. At what decibel level for a continuous period does hearing loss occur?

1) 55 + dB
2) 90 + dB
3) 60 + dB
4) 85 + dB

17. You can still hear in space even if you scream

1) True
2) Neither
3) The only place in space that you can hear is the moon
4) False

18. Sound is a form of -

1) light
2) motion
3) liquid
4) energy

19. Sound is produced by -

1) energy changing form
2) changes in the state of matter
3) vibrating objects
4) thinking about objects

20. Sound can only travel through -

1) solid objects
2) matter
3) water
4) empty space

21. Sound travels fastest through -

1) gases
2) gels
3) solids
4) liquids

22. Which of the following would sound travel fastest through?

1) a pool of water
2) a mixture of gases
3) empty space
4) a block of iron

23. Sound travels in -

1) circular motions
2) waves
3) straight lines
4) empty space

24. Vibrations in your vocal chords allow you to -

1) hear
2) feel
3) speak
4) see

25. Sound can travel in outer space.

1) false
2) true

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