science energy

Question 1

Define energy

Answer 1

The ability to do work or cause change.

Question 2

Describe energy transfer

Answer 2

A change from one form of energy to another

Question 3

Unit used for energy

Answer 3

J

Question 4

Define renewable energy source

Answer 4

Sources that will not run out, they are not depleted (used up and can’t be replaced/replenished) when they are used.

Question 5

Define non-renewable energy source

Answer 5

Sources cannot be made again in a short period of time.

Question 6

Define potential energy

Answer 6

Energy an object has because of its position or shape.

Question 7

Calculate potential energy

Answer 7

weight × height

Question 8

Define kinetic energy

Answer 8

Energy an object has due to motion

Question 9

Calculate kinetic energy

Answer 9

½ x mass x (speed)^2

Question 10

Define mechanical energy

Answer 10

The form of energy associated with the motion

Question 11

Calculate mechanical energy

Answer 11

Kinetic Energy + Potential Energy

Question 12

Define chemical energy

Answer 12

Energy that is stored in the bonds between the atoms of compounds. If the bonds are broken, the energy is released and can be converted to other forms of energy.

Question 13

Define electromagnetic energy

Answer 13

Energy that travels through space as electrical and magnetic waves.

Question 14

Define electric energy

Answer 14

Energy of moving electrons. Electrons flow through wires to create electric current

Question 15

Define nuclear energy

Answer 15

Energy that is stored in the nuclei of atoms because of the strong forces that hold the nucleus together.

Question 16

Define sound energy

Answer 16

Form of mechanical energy that starts with a vibration in matter.

Question 17

Define thermal energy

Answer 17

The energy of moving atoms of matter.

Question 18

Explain the Law of Conservation

Answer 18

Energy cannot be created or destroyed, only changed from one
form to another.