Energy

`1. What is energy? 

• A.      Energy is something that causes things to change or move.

• B.      Only living things need energy.

• C.      Energy is light.

• D.      Energy cannot make things move.

Identify the energy changes in the picture?

• A. Movement energy changes to sound energy.

•         B.  Electrical energy changes to sound, light

  and heat energy

•        C. Heat energy changes to movement energy.

•        D. Electrical energy changes to heat energy.

3. What are some examples of things that use energy?

•  A) Pencil staying on the table

• B) Clouds moving in the sky

• C) Fish swimming in the ocean

• D) Flags waving, water boiling, trees growing, drums making sound, and worms moving

4. What is an example of energy transfer?

• A) When a person kicks a ball

• B) When a person sleeping

• C) When a hot stove stays hot

• D) When different materials are tested

5. . Why do our hands feel warmer when we hold the hot water bottle or microwave heat bag?

• A. Because we have fewer

• B.  Our hands feel warmer because the heat energy moves from the bottle or bag to our hands.

• C. The weather is so hot

• D. Because of states of matter will change.

6.  What happens to the heat in the bottle or bag after a while?

• A. The heat in the bottle or bag transfers into the surroundings.

• B. It will stay same.

• C. Its going to be warmer.

• D. Its going to be cooler.

7. What did the students learn about repeating their observations and measurements?

• A) It helps them make sure they didn't make any mistakes.

• B) It makes the experiment more fun.

• C) It allows them to use different materials.

• D) It helps them become better scientists.

8. Why does a ball bounce when it is dropped on the ground?

• A. Because it is made of rubber

• B. Due to the transfer of kinetic energy

• C. Because of the force of gravity

• D. It doesn't bounce

9. What is the main source of energy for the Earth?

• A. Fossil fuels

• B. Solar energy

• C. Wind energy

• D. Nuclear energy

10. How does energy transfer occur in a light bulb?

• A. Electrical energy to light and heat energy

• B. Light energy to electrical energy

• C. Heat energy to electrical energy

• D. No energy transfer occurs