Wave Behaviors

What does the word "reflected" mean in the context of waves?

• Waves are absorbed by a surface

• Waves bounce off a surface

• Waves pass through a surface

• Waves disappear completely

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NGSS.MS-PS4-2

What is refraction?

• The reflection of waves off a surface

• The bending of waves due to a change in speed

• The absorption of waves by a medium

• The scattering of waves in all directions

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NGSS.MS-PS4-1

NGSS.MS-PS4-2

What happens to waves as they pass from one medium to another at an angle?

• They always slow down

• They always speed up

• They may speed up or slow down

• They remain unchanged

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NGSS.MS-PS4-2

What happens to waves when there is a greater change in their speed?

• They disappear.

• They become smaller.

• They bend more.

• They stop moving.

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NGSS.HS-PS4-1

What effect does refraction through a convex lens have on images?

• Makes images appear smaller.

• Makes images appear larger.

• Makes images disappear.

• Makes images change color.

What effect does a convex lens have on the appearance of an object like a fly?

• It makes the object appear smaller.

• It makes the object appear larger.

• It makes the object disappear.

• It makes the object appear the same size.

What effect does a concave lens have on the appearance of an object like a fly?

• It makes the object appear larger.

• It makes the object appear smaller.

• It makes the object disappear.

• It makes the object appear the same size.

What is the approximate speed of light in air?

• 186,000 miles per second

• 150,000 miles per second

• 200,000 miles per second

• 100,000 miles per second

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NGSS.HS-PS4-1

What happens to light when it enters water?

• It speeds up

• It slows down

• It stops

• It travels in a straight line

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NGSS.MS-PS4-2

Why does light bend when it enters water?

• Because water is a less dense medium

• Because water is a denser medium

• Because light speeds up

• Because light stops

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NGSS.MS-PS4-2