Review CA2

All of the following objects produce sound and energy EXCEPT-

• a radio

• a drum

• a flashlight

• a television

When students look at a computer screen, they are using what kind of energy produced by the screen?

• light energy

• thermal energy

• mechanical energy

• solar energy

Turning the handle of a pencil sharpener to sharpen a pencil is an example of using,

• light energy

• mechanical energy

• electrical energy

• thermal energy

What kind of energy does an oven use to bake a cake?

• light energy

• mechanical energy

• sound energy

• thermal energy

What type of energy bounces off a mirror and allows you to see your reflection?

• light energy

• mechanical energy

• sound energy

• thermal energy

A push or pull changes an object's

• size

• motion

• weight

• temperature

If a ball moves across the floor, what probably caused the ball to move?

• the ball was observed

• the ball is made of rubber

• the ball was pushed

• the ball is very heavy

A pull can be used to do all ALL of the following, EXCEPT

• open a door

• move a wagon

• lift some rocks

• boil some water

All of the actions below would probably move a book, EXCEPT

• standing on top of the book

• pushing the book off a table

• pulling a rug that the book is on

• kicking the book across the floor

If a ball is at the top of the ramp and it is let go, it will roll down the ramp. What causes the ball to roll down the ramp.

• the push of magnetism

• the heat of the sun

• the pull of gravity

• the rotation of the Earth