Waves Unit Review

What is the amplitude of the blue wave?

• 1

• 2.5

• 2

• 3

• 4

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Which of the following waves would you expect to have the least amount of energy?

• Yellow

• Blue

• Red

• Green

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_______ocean waves have ______energy than ______ones of the same wavelength and frequency.

• Big; more; smaller

• Small; more; big

• Big; less; smaller

• Big; slightly less; smaller

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In some situations, digital cable will produce a much crisper image than analog. What is one important cause of this?

• Digital signals are not as susceptible to noise as analog.

• Analog is incapable of producing images as crisp as digital.

• Digital is always a better option than analog.

• Analog signals transmit in discrete pulses which decreases transmission quality.

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What is the wavelength of this wave?

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What is the amplitude of this wave?

Sound travels faster in water than in the air.

• True

• False

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The gray plot and red plot attempt to transmit the same signal in the graph below. What is the best conclusion that can be drawn?

• The gray plot is a discrete analog signal.

• The red plot is a discrete digital signal.

• The red plot is a discrete analog signal.

• The red plot cannot transmit a useful signal because of its box like shape.

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The drawing shows two waves. Which statement best compares these two waves?

• Wave 1 has a higher frequency because it has a longer wavelength than wave 2.

• Wave 1 has a higher frequency because it has a higher amplitude than wave 2.

• Wave 2 has more energy because it has a higher amplitude than wave 1.

• Wave 2 has more energy because it has a higher frequency than wave 1.

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What is a wavelength?

• Wavelength is the length of one full wave, it has this symbol: ⋋
• wavelength measures the amount of radiation
• a situation where light is bent in such a direction that it cancels itself out

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