Energy Transfer

Question 1

Name the 9 types of energy.

Answer 1

Electrical.
Light.
Sound.
Kinetic.
Nuclear.
Thermal.
Gravitational potential.
Elastic potential.
Chemical.

Question 2

What is electrical energy?

Answer 2

Whenever a current flows.

Question 3

What is light energy?

Answer 3

From the sun, light bulbs etc.

Question 4

What is sound energy?

Answer 4

From loudspeakers to anything noisy.

Question 5

What is kinetic energy?

Answer 5

Anything that is moving.

Question 6

What is nuclear energy?

Answer 6

Released only from nuclear reactions.

Question 7

What is thermal energy?

Answer 7

Flows from hot objects to colder ones.

Question 8

What is gravitational energy?

Answer 8

Possessed by anything which can fall.

Question 9

What is elastic potential energy?

Answer 9

Stretched springs, elastic, rubber bands.

Question 10

What is chemical energy?

Answer 10

Possessed by food, fuels batteries.

Question 11

What are potential and chemical energy forms of?

Answer 11

Stored energy.

Question 12

Why are gravitational, elastic and chemical energy stored energy?

Answer 12

Because the energy is not doing anything, its waiting to happen.
Waiting to be turned into one of the other forms.

Question 13

What is the conservation of energy principle?

Answer 13

Energy can be transferred usefully from one form to another, stored or dissipated, it can never be created or destroyed.

Question 14

What does dissipated mean?

Answer 14

Energy is spread out and lost.

Question 15

EXAMPLE.

Solar hot water panel.

Answer 15

Light to heat.

Question 16

EXAMPLE.

Falling object.

Answer 16

Gravitational to kinetic.

Question 17

When is energy only useful?

Answer 17

When it can be converted from one form to another.

Question 18

EXAMPLE.

Batteries.

Answer 18

Chemical energy —–> electrical and heat energy.

Question 19

EXAMPLE.

Electrical devices eg television.

Answer 19

Electrical energy ——> light,sound, heat energy.

Question 20

EXAMPLE.

Electrical generation eg wind turbines.

Answer 20

Kinetic energy —–> electrical and heat energy.

Question 21

EXAMPLE.

Potential energy eg firing a bow and arrow.

Answer 21

Elastic potential energy —–> kinetic and heat energy.