Energy 10.2

Question 1

Energy

Answer 1

Describes anything “ that can do work “

Question 2

Law of conservation f energy

Answer 2

Energy cannot be created or destroyed only transferred

Question 3

Potential energy

Answer 3

stored energy that, when released, is converted to other forms such as kinetic, sound, heat or light energy

Question 4

Gravitational

Answer 4

potential energy of an object elevated above the ground

Question 5

Elastic

Answer 5

energy stored by an elastic object that is stretched, such as a spring or rubber band

Question 6

Chemical

Answer 6

energy stored in chemicals that, when reacted together such as in burning reactions, release heat, sound or light

Question 7

Nuclear

Answer 7

energy stored in the nucleus of atoms that can release energy slowly, such as in a nuclear reactor, or quickly, such as in a nuclear explosion

Question 8

Electrical

Answer 8

energy supplied to homes by powerlines and available to your appliances via power outlets in the home

Question 9

Kinetic

Answer 9

energy possessed by objects that are moving

Question 10

Heat

Answer 10

energy that causes objects to gain temperature

Question 11

Light

Answer 11

energy that may be released, for example, when an object is hot or by a nuclear reaction in a star

Question 12

Sound

Answer 12

energy carried by the air in a room and detected by the ear

Question 13

efficiency

Answer 13

the fraction of energy supplied to a device as useful energy. It is usually expressed as a percentage.