Intro to Properties of Waves

How do wavelength and amplitude differ in simple waves?

Answer explanation

The wavelength is the length of a wave measured from crest to crest (horizontally), while the amplitude is the height of a wave measured from origin to the crest (vertically).

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A diagram of a wave is pictured. What does the length from A to B represent?

Answer explanation

The length from A to B is one wavelength (from crest to crest).

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The graph shows the relationship between wave amplitude and wave energy. How does the wave’s energy change as the wave’s amplitude changes?

Answer explanation

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

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If someone drops a rock in a calm lake, what is transferred in the wave that is created?

Answer explanation

Only energy is transferred in a wave, not water.

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What are some examples of types of energy that travel in waves?

Answer explanation

Light and sound

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Label the following parts on a typical transverse wave: crest, trough, amplitude, and wavelength.

b

a

c

d

Wavelength

Amplitude

Crest

Trough

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

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

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

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

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

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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–

• are closest together.

• have the greatest amplitude.

• move into a new medium.

• move the most slowly.

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This table provides simplified data on the relationship between the amplitude of a wave and the energy the wave carries. Based on the pattern in the table, a wave with an amplitude of 4, would carry how much energy?

• 4

• 16

• 32

• 80

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