Science 3 3rd Quarter Review

There are many sources of electricity. Which source will eventually run out?

• solar energy

• coal

• wind

• moving water

In which direction will an object go due to gravity?

• upward

• forward

• sideward

• downward

What do you call the change in position of a moving kite?

• energy

• force

• motion

• wind

Which word describes what happens when two magnets pull each other?

• repulsion

• attraction

• motion

• gravity

When light travels from air to water, the movement of light slows down. This makes the pencil in the picture look bent or broken. This bending of light is called __________?

• reflection

• refraction

• shadow

• scattering

What will you do to make an object move?

• Pull or push the object.

• Crush or crumple the object.

• Sit beside the object until it moves.

• Look at the object and walk around.

When Noel entered the room, he switched on the light. The bulb lighted. What cause it to light?

• Electric current flowed and electrical energy was changed into light.

• Electrical current flowed and light was changed into electrical energy.

• The tiny wires inside the bulb started moving so they could make light.

• The bulb became warmer so it started to change heat energy to light.

Which of the following is a natural source of light?

• flashlight

• lampshade

• sun

• burning wood

What kind of force do you use when you move a grocery cart forward?

• magnetism

• push

• gravity

• pull

Light cannot pass through in an opaque object. Which of the following is an example of an opaque material?

• eyeglasses

• wood

• red cellophane

• eyeglasses