1. Week 15 1. Jan turns on a lamp so she can read
Week Jan turns on a lamp so she can read. What type of energy provided by the lamp helps Jan read?
Nuclear energy
Radiant energy
Chemical energy
Thermal energy
2. When moving air or wind strikes the blades of a windmill, it causes the blades to turn. What kind of energy is involved in the movement of the blades?
Mechanical energy
Nuclear energy
Electrical energy
Electromagnetic energy

2. 3. As a ball rolls down a hill, it has less potential energy than it did at the top of the hill. Some of the ball’s potential energy
Disappears
Decreases friction.
Creates even more energy.
Changes to kinetic energy.
4. What type of energy is released if the forces that hold the protons and neutrons of an atom in place are overcome?
Electrical energy
Nuclear energy
Electromagnetic energy
Thermal energy

3. 5. Which of the following correctly states the law of conservation of energy?
Energy cannot be created or destroyed but can be converted from one form to another.
Energy can be create or destroyed, as well as being converted from one form to another.
Energy is created when it is converted from one form to another.
In most systems, some energy is destroyed and lost as heat.
6. Many household devices use batteries as an energy source. What kind of energy is stored in a battery?
Chemical energy
Electrical energy
Thermal energy
Nuclear energy

4. 7. A wet cell battery is an example of stored potential energy
7. A wet cell battery is an example of stored potential energy. Once connected to a load, the stored energy in a battery is converted. Describe the conversion of energy in a battery powered clock.
Chemical to electrical to mechanical
Chemical to thermal to electrical
Electrical to thermal to mechanical
Chemical to electrical to thermal
8. Which of the following changes chemical energy into mechanical energy?
Blender c. Ceiling fan
Flashlight d. Human body

5. 9. If you drop an ice cube into a bowl of hot water, the ice cube melts because
Heat is transferred from the ice cube to the water.
Heat is transferred from the bowl to the water.
Heat is transferred from the water to the ice cube.
Heat is transferred from your hand to the ice cube.
10. The heat generated by a burning candle is an example of transfer by?
Convection
Combustion
Radiation
conduction