Chapter 6 Test

1. The ability to cause change best describes:

• energy
• work
• power

2. Units of energy include all of the following EXCEPT:

• calorie
• Btu
• gram

3. The term best described by the phrase, " a group of objects, effects, and variables that are related," is:

• energy
• system
• efficiency

4. As an object is raised to a higher position, the object is most likely to experience an increase in its:

• kinetic energy
• potential energy
• heat energy

5. Friction between two surfaces most often transforms energy of motion directly to:

• electrical energy
• thermal energy
• chemical energy

6. Which of the following statements DOES NOT agree with the law of conservation of energy?

• When gasoline is burned, energy is destroyed
• Some energy from gasoline is converted into light energy
• As one form of energy decreases, another form increases

7. The equation used to calculate work when force is applied to move an object over a distance is:

• work = force + distance
• work = force - distance
• work = force x distance

8. The rate of doing work is called:

• energy
• power
• mechanical advantage

9. If forces A, B, and C are equal, where is the most work done?

• Force A
• Force C
• The work is the same for all three

10. Robert uses a 100 newton force to lift a bucket of water 2 meters in the air. What is the amount of work done by Robert? (Work = Force x Distance)

• 50 joules
• 100 joules
• 200 joules