Review for CIA 2-2

We are learning to: describe the properties of waves.

We are looking for: Wavelength-distance from crest to crest (transverse wave), or from compression to compression (longitudinal wave)Frequency-number of waves that pass a given point each secondAmplitude-distance from rest position to the crest (transverse wave); measures how compressed the particles of the medium are (longitudinal wave); determines the amount of energy of each wave

In the diagram, identify the wave property “A”

A. B. C. D.

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A. FrequencyB. AmplitudeC. WavelengthD. Help! I don’t understand.

Which of the following is true about waves in the diagram?

A. B. C. D.

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A. Wave X has a higher frequency than Wave Y

B. Wave X has a lower frequency than Wave Y

C. Wave X has the same frequency as Wave Y

D. Help! I don’t understand.

Which of the waves in the picture has the greatest

amplitude?

1

2

3

0

0

0

0A. 1

B. 2

C. 3

D. Help! I don’t understand.

Which property measures the amount of energy transferred by a wave?

A. B. C. D.

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A. WavelengthB. FrequencyC. AmplitudeD. Help! I don’t

understand.

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We are learning to demonstrate how waves transfer energy.

We are looking for how waves interact with an object or other waves. They either:

Transmit-wave energy passes through an object.

Reflect-wave energy bounces off an object.

Refract – wave changes speed as it passes from one medium to another medium

Diffract – wave spreads out as it passes through an opening or around the edge of a barrier

Absorb-wave energy is taken in by an object they encounter.

Interference-wave energy of multiple waves is combined.

What happens to the energy of the wave when the crest of the blue wave meets the crest of the green wave?

0

0

0

0A. Energy decreases.B. Energy increases.C. Energy stays the

same.D. I don’t get it! Help!

What is it called when a wave bounces off of a barrier?

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a. b. c. d.

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a. Refractionb. Reflectionc. Diffractiond. Help! I don’t know.

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What happens to waves as they go through an opening or around a

corner of an object?

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A. B. C. D.

0% 0%0%0%

A. They are refracted.B. They are reflected.C. They are diffracted.D. Help! I don’t know.

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As waves go through different mediums, what happens to them?

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A. B. C. D.

0% 0%0%0%

A. Waves change speed and are reflected.

B. Waves change speed and are refracted.

C. Waves change speed and are diffracted.

D. Help! I don’t know.

10

We are learning to: demonstrate that vibrations produce longitudinal waves which move away from the original source. We are looking for: an explanation of the following:

• A medium is required (mechanical wave)• A sound is produced (acoustic energy)• A vibration is required to produce sound waves (longitudinal wave)

Energy is required to create a sound wave. Sound energy is also known as . . .

A. B. C. D. E.

0 0 000A. Elastic potential energy

B. Radiant energyC. Acoustic energyD. Thermal energyE. Help! I don’t

understand.

How does sound transfer energy?

A. B. C. D.

0 000A. By vibration of a

medium, producing a transverse wave.

B. By vibration of a medium, producing a longitudinal wave.

C. By vibration of a medium, producing a surface wave.

D. Help! I don’t know.

Sound cannot be heard in which of the following locations?

A. B. C. D. E.

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A. In a buildingB. Under waterC. In spaceD. In the forestE. Help! I don’t know.

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