3rd Grade - Optic Light (Light Energy)

When does light stop traveling in a straight line?

• when it strikes an object

• when it becomes brighter

• when it moves through air

• when it passes through space

The picture shows light striking the surface of a mirror. Which process is shown in this picture?

• absorption

• conduction

• reflection

• refraction

Aiden had a glass filled with water. He put a straw into the water and looked closely. The straw looked like it was broken. Why did the straw look broken?

• The light was reflected.

• The light was refracted.

• The light was scattered.

• The light was absorbed.

A student shines a light on two objects. He sees that the light that passes through Object A is as bright as the light in front of the object. He also sees that very little light passes through Object B. What word describes what is happening to the light shining on Object B?

• absorption

• bending

• reflecting

• refraction

Rylee and Ming hold opposite ends of a hollow tube that bends. They take turns shining a light through an end. They cannot see the light at the other end of the tube.

Why do you think that they cannot see the light?

• The light that they are using is too dim, so it cannot travel that far.

• Light travels in a straight line. The tube is bent, so the light cannot be seen.

• The tube is too dark. If they try a tube of a lighter color, the light will show up.

• The opening at both ends is not large enough to allow the light to enter and exit.