Wave Movement (PS4-2)

Which of the following provides an example of sound waves being reflected?

• A noise that produces an echo when it bounces off a distant wall

• The sound of a distant train getting louder as it approaches an observer

• Hearing music being played by a neighbor’s stereo through a wall

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NGSS.MS-PS4-2

What is the main difference between mechanical and electromagnetic waves?

• Mechanical waves need a medium to transfer energy through, electromagnetic waves do not.

• Electromagnetic waves need a medium to transfer energy through, mechanical waves do not.

• There isn't a difference, they transfer energy in the exact same way.

Which of the following is an example of how waves can be absorbed:

• The blacktop(asphalt) heating up on a summer afternoon.

• Using your cellphone screen to reflect the suns light into your friends eyes.

• Looking at a pencil in a glass of water and it looks different than it did when you put it in.

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NGSS.MS-PS4-2

The behavior of a wave is affected by the state of the medium it is passing through.

• True

• False

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NGSS.MS-PS4-2

The picture shows light waves bouncing off a mirror and into different people's eyes. What type of wave movement is this?

• Reflection

• Refraction

• Diffraction

• Resonance

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NGSS.MS-PS4-2

Which of the figures represents reflection?

• A
• B
• C
• D

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NGSS.MS-PS4-2

When you stand in the sun, your body takes in the sun's rays, which warms you up. What type of wave movement is this?

• Reflection

• Refraction

• Absorption

• Transmission

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NGSS.MS-PS4-2

Hey! That straw looks broken. This is because waves are being bent as they travel through the water. What type of wave movement is this?

• reflection

• refraction

• transmission

• absorption

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NGSS.MS-PS4-2

We are able to see a mirrored image of the mountains on the water because light waves are being bounced off of its surface. What type of wave movement is this?

• refraction

• reflection

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NGSS.MS-PS4-2

The picture shows a laser being bounced off of a mirror. What type of wave movement is this?

• reflection

• refraction

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NGSS.MS-PS4-2