Waves Unit Test Review

Looking at waves A and B. Which description correctly describes the waves?

• Wave A has twice the energy because it has a frequency twice as large.

• Wave A has twice the energy because it has an amplitude twice as large.

• Wave B has twice the energy because it has an amplitude twice as large.

• Waves A and B gave the same energy because they have the same amplitude.

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The diagram shows a wave. The quantity shown is the amplitude. This quantity is directly proportional to which of these other quantities?

• Energy

• Frequency

• Period

• Wavelength

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Looking at the wave diagram, which best describes the wave?

• The period of the wave is decreasing.

• The energy of the wave is decreasing.

• The frequency of the wave is decreasing.

• The wavelength of the wave is decreasing.

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Looking at the diagram showing two waves. Notice, wave A is taller and wave B is thinner. Wave B

• has a bigger amplitude and shorter wavelength.

• has a shorter amplitude and longer wavelength.

• has a bigger amplitude and wavelength.

• has a shorter amplitude and wavelength.

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What do these two sound waves have in common?

• They have the same amplitudes.

• They have the same wavelengths.

• They make the same exact sound.

• They have crests in the same position.

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Which radiation has a higher frequency than visible light?

• X-Rays

• Infrared light

• microwave radiation

• the frequency of all radiation is the same

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Which wave diagram BEST represents a dim red sunset on the right side to the light from an intense ultraviolet bug light on the left side?

• 
• 
• 
• 

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Nina’s measurements, shown in the table here, BEST represent a wave with

• decreasing frequency.

• increasing frequency.

• increasing amplitude.

• decreasing amplitude.

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If we compare and contrast electromagnetic waves with sound waves, all BUT one statement is true. That is

• sound waves require a medium to travel while electromagnetic waves do not.

• electromagnetic waves can travel through the vacuum of space while sound waves cannot.

• electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere.

• sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.

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We spend our lives in visible light without risks to our health. Yet exposure to UV waves in sunlight can cause skin cancer. What is the BEST explanation for this?

• UV waves are longer and carry more energy.

• UV waves are higher frequency and carry more energy.

• UV waves have a lower frequency and carry more energy.

• UV waves travel faster than visible light and have more energy.

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