What We Know About Waves

Students are modeling waves by shaking a rope up and down. We know this is a wave because–

• the rope is made up of strands of cotton threads which are braided together.

• the rope stops moving when the students stop shaking it up and down.

• it has a repeating pattern with a specific wavelength, frequency, and amplitude.

• the student can change the distance the rope moves by moving the rope further up or down.

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• Wavelength

• Frequency

• Amplitude

• Trough

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Which of the waves is carrying the greatest amount of energy?

• 
• 
• 
• 

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The waves that carry the most energy are the waves that–

• have the greatest amplitude.

• move the most slowly.

• move into a new medium.

• are closest together.

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What do the waves have in common?

• They have the same amount of energy.

• They have the same amplitude.

• They can cancel each other out so nothing is heard.

• They have the same frequency.

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Based on the pattern in the table, a wave with an amplitude of 4, would carry how much energy?

• 4

• 16

• 32

• 80

Which of the following waves has the highest frequency?

• 
• 
• 
• 

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How does the wave’s energy change as the wave’s amplitude changes?

• As wave's amplitude decreases, the wave's energy also decreases.

• As wave's amplitude decreases, the waves energy increases.

• As wave's amplitude increases, the waves energy decreases.

• As wave’s amplitude increases, the wave’s energy also increases.

Which wave has the highest amplitude?

• A

• B

• C

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What property of the wave is represented by the letter "B"?

• amplitude
• crest
• trough
• wavelength

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