Question

energy conservation and thermal energy transfer - exam
directions: choose the best answer for each question. circle the letter of your choice.

1. which of the following best defines energy?

a) the ability to do work or cause change
b) the speed of an object
c) the temperature of a substance
d) the force applied to an object

1. stored energy due to an objects position or arrangement is called.

a) kinetic energy
b) potential energy
c) thermal energy
d) chemical energy

1. which of the following is an example of kinetic energy?

a) a stretched bow
b) a box on a shelf
c) a rolling ball
d) a battery

1. energy stored in the bonds between atoms is called:

a) mechanical energy
b) thermal energy
c) chemical energy
d) radiant energy

1. the law of _______________ of energy states that energy cannot be

created or destroyed, only transformed.
a) transformation
b) conservation
c) friction
d) equilibrium

1. a system that doesnt exchange matter with surroundings but may exchange energy is

called a:
a) open system
b) closed system
c) isolated system
d) dynamic system

Explanation:

1. Energy is defined as the ability to do work or cause change.
2. Potential energy is the stored energy due to an object's position or arrangement.
3. A rolling ball is in motion, so it has kinetic energy.
4. Chemical energy is stored in the bonds between atoms.
5. The law of conservation of energy states that energy cannot be created or destroyed, only transformed.
6. A closed system doesn't exchange matter with surroundings but may exchange energy.

Answer:

1. A. The ability to do work or cause change
2. B. Potential energy
3. C. A rolling ball
4. C. Chemical energy
5. B. Conservation
6. B. Closed system