Force, Work & Energy

1. Identify the type of energy conversion.

• Heat to electrical energy

• Electrical to heat energy

• Sound to electrical energy

• Electrical to solar energy

2. When is work said to be done?

• When an object does not change its position

• When an object changes its position

• When force is applies

• When no force is applied

3. Who discovered gravity?

• Pascal

• Joule

• Einstein

• Newton

4. What is force?

• Capacity to do work

• Ultimate source of energy

• Push and pull

5. Identify the given source of energy.

• Biomass energy

• Hydro energy

• Solar energy

• Wind energy

6. Which of the following is a non-renewable source of energy?

• Coal

• Petroleum

• Solar energy

• Biomass energy

7. What affects the weight of an object?

• Friction

• Electrostatic force

• Gravity

8. Is work being done in the given picture?

• Yes

• No

9. Friction will be less in which of the given surfaces?

• 
• 

10. The total amount of energy in the universe remains the same.

• True

• False