Energy

Question 1

Energy can always be

Answer 1

Conserved

Question 2

Unit of energy

Answer 2

Joules

Question 3

If an object falls GPE becomes

Answer 3

KE

Question 4

SHC is

Answer 4

Energy required to raise 1 temp of 1kg of a substance by 1 temp

Question 5

Power is

Answer 5

Rate of energy transfer

Question 6

Unit for power

Answer 6

Watts

Question 7

During thermal energy - usually it’s lost through conduction, transferring energy to the outside surroundings, can reduce this by

Answer 7

Insulation

Question 8

Finite ( non-renewable ) sources

Answer 8

Fossil fuel
Nuclear fuel

Question 9

How does fossil fuels produce heat?

Answer 9

Coal / oil / gas burned - produce steam to drive turbines

Question 10

How does nuclear fuel produce heat?

Answer 10

Uranium - used in nuclear reactors

Question 11

Renewables sources

Answer 11

Wind power
Hydroelectric
Solar power
Biofuels

Geothermal
Tidal
Wave

Question 12

How is wind power a renewable source?

Answer 12

Wind = kinetic energy = turbines

Question 13

How is hydroelectric a renewable source?

Answer 13

Water behind dam had GPE = falls through turbine

Question 14

How is solar power a renewable source?

Answer 14

Light from Sun produces electricity

Question 15

How is biofuels a renewable source?

Answer 15

Plant matter burned to produce heat