Multiple Choice. Read each item carefully and choose the letter of the correct answer.

____1. Which of the following converts light energy to electrical energy?

A. turbo broiler B. oven toaster C. plants D. solar calculator

____2. Which of the following converts electrical energy to thermal energy?

A. sun B. electric blender C. oven toaster D. washing machine

____3. Which of the following is used to lift things to high places by pulling a rope?

A. inclined plane B. pulley C. screw D. lever

____4. What is a spiral plane wrapped around an object such as a pole or a cylinder?

A. pulley B. wedge C. screw D. wheel and axle

____5. How does a lever help us to do work?

A. It holds things together. C. It lifts object with less force.

B. It increases the amount of force. D. It changes the direction of the force.

____6. What will a carpenter use to put the hinges of a door?

A. lever B. screw C. wedge D. wheel and axle

____7. How do a wheelbarrow, a can opener, and a nutcracker help us to do work?

A. They hold things together. C. They lift an object with less force.

B. They increase the amount of force. D. They change the direction of the force.

____8. Where will you move the fulcrum if you want to decrease the effort force when using a lever?

A. Only the effort force must be move.

B. The fulcrum should be closer to the object.

C. Anywhere, it does not affect the effort force.

D. The fulcrum should be farther away from the object.

____9. Which among the following is an example of someone using a simple machine?

A. An old man is walking on the road. B. A toddler is drinking his milk.

C. A girl is reading a book. D. A lady is chopping the vegetables.

____10. How does an inclined plane help us do our work easier?

A. It can hold things together.

B. We can cut or divide things easily​