Physics- Energy

Question 1

9 types of energy store

Answer 1

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

Question 2

4 types of energy transfers

Answer 2

Mechanical work
Electrical work
Heating
Radiation

Question 3

What is specific heat capacity?

Answer 3

A measure of the amount of energy needed to raise the temperature of 1kg of it by 1%

Question 4

Heat energy equation

Answer 4

Mass x change in temperature x specific heat capacity

Question 5

What is power?

Answer 5

A measure of the amount of energy supplied per second

Question 6

Power equation

Answer 6

Energy / time

Question 7

What does efficiency measure?

Answer 7

How usefully we’re using power/energy

Question 8

Efficiency equation

Answer 8

Useful energy output / Energy or power output x 100%

Question 9

9 types of energy resource

Answer 9

Biomass
Nuclear
Wind
Hydroelectric
Tidal
Solar cell
Geothermal
Wave
Fossil fuels

Question 10

What is thermal conductivity?

Answer 10

The rate at which heat energy is transferred by conduction through a cross sectional area of a material