Question

reviewing key terms
choose the letter of the best answer.

1. energy of motion is called

a. kinetic energy.
b. elastic potential energy.
c. gravitational potential energy.
d. chemical energy.

1. when you stretch a rubber band, you give it

a. kinetic energy.
b. elastic potential energy.
c. gravitational potential energy.
d. electrical energy.

1. the energy associated with the position and motion of an object is called

a. potential energy.
b. nuclear energy.
c. mechanical energy.
d. thermal energy.

1. the energy stored in the nucleus of an atom is called

a. electromagnetic energy.
b. electrical energy.
c. chemical energy.
d. nuclear energy.

1. fossil fuels store energy from the sun as

a. chemical energy.
b. thermal energy.
c. electromagnetic energy.
d. electrical energy.
if the statement is true, write true. if it is false, change the underlined word or words to make the statement true.

1. kinetic energy is related to an objects height.
2. electrical energy is the total kinetic and potential energy of the particles in an object.
3. the law of conservation of energy states that when one form of energy is transformed to another, no energy is destroyed.
4. energy is anything that has mass and takes up space.
5. combustion is the process of burning fuels.

writing in science
interview you are preparing to interview an olympic skier for a childrens science magazine. prepare a list of questions that you would ask the skier about the energy transformations that occur while skiing.

Explanation:

1. Kinetic energy is energy of motion. Elastic potential energy is in stretched objects, gravitational potential is related to height, and chemical energy is in chemical bonds.
2. Stretching a rubber - band gives it elastic potential energy as it can do work when released.
3. Mechanical energy is associated with position and motion of an object.
4. Nuclear energy is stored in the nucleus of an atom.
5. Fossil fuels store solar energy as chemical energy through photosynthesis and geological processes.
6. False. Gravitational potential energy is related to an object's height.
7. False. Thermal energy is the total kinetic and potential energy of the particles in an object.
8. True. The law of conservation of energy states energy is conserved during transformations.
9. False. Matter is anything that has mass and takes up space. Energy is the ability to do work.
10. True. Combustion is the burning of fuels.

Answer:

1. A. kinetic energy
2. B. elastic potential energy
3. C. mechanical energy
4. D. nuclear energy
5. A. chemical energy
6. False, Gravitational potential energy
7. False, Thermal energy
8. True
9. False, Matter
10. True