Light Energy Test 5.8C

A clear, glass beaker is filled half-full of water. A plastic spoon is placed in the beaker, and one end rests against the top edge of the beaker. When viewed from the side, the bottom of the spoon does not line up with the top of the spoon. What causes this to happen?

• Light rays bend the plastic spoon.

• Light rays are reflected by the water.

• Light rays are refracted in the water.

• Light rays are absorbed by the plastic spoon.

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5.8C

The arrows in the diagrams below represent light.

Which diagram best shows how a glass mirror would reflect light?

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5.8C

Students were asked to investigate the behavior of light. Students were given a candle and a piece of cardboard with a hole in it. Students placed the cardboard between the candle and the wall and observed the location of the image on the wall.

Which property of light causes the image of the candlelight to appear near the bottom of the wall?

• Light refracts when it travels through a new medium.

• Light reflects off of objects at a complementary angle.

• Light travels in a straight line until it strikes an object.

• Light bends around objects when it passes them.

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5.8C

Which of these best demonstrates the refraction of light?

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5.8C

What explains why a coin at the bottom of a pool of water seems closer to the surface than it really is?

• Light reflects from the surface of the water.

• Light reflected from the coin changes direction as it leaves the water.

• Light travels only in straight lines after being reflected.

• Light reflected from the coin is absorbed by the water.

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5.8C

A student looks at the picture shown.

Which statement BEST explains why the trees appear on the surface of the lake?

• The trees produce light that reflects off the water.

• Light reflects off the trees and reflects off the water.

• The trees refract light that then reflects off the water.

• Light refracts from the water and is reflected off the trees.

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5.8C

A student placed a pencil in a glass of water and noticed that it looked broken. Why did the pencil appear to be broken? Name the property of light that caused the pencil to appear broken, and explain what occurred to cause this to happen.

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5.8C

A person observes a fish in a lake. The position of the fish is shown.

Which statement best explains why the observed fish appears to be closer to the surface than the actual fish?

• When light travels from water into air, the light changes in direction.

• The light bounces off the water and creates a reflected image of the fish.

• When white light passes through the surface of the water, the light separates into colors.

• The light enters the water and exits the water at the same angle.

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5.8C

A class observed that when white light passing through a prism at a certain angle, the light changes to a rainbow pattern as it exits the prism at a different angle.

What claim best explains the behavior of the light passing through a prism?

• The light reflected from the prism created a rainbow.

• The light bounces off the prism in different colors.

• Colored light enters the prism and changes to white light.

• Light refracts as they pass through the glass prism.

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5.8C

A student opens a drawer and sees several items inside.

Which of the items will refract light?

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5.8C