P2 and p3

Question 1

What is the best conductor of electricity?

Answer 1

Metal

Question 2

What are the best insulators of thermal energy?

Answer 2

Non metal , fibreglass

Question 3

What happens when the thermal conductor of a material gets higher?

Answer 3

The rate of energy trasfer through the material get higher

Question 4

What sort of energy transfer would a thick insulator have?

Answer 4

Have a low rate

Question 5

What is the specific heat capacity of a substance

Answer 5

The amount of energy needed to change the tempertaure

Question 6

How are houses heated?

Answer 6

Gas heater,gas central heating systems or fire places

Question 7

How cna the rate of energy transfer from houses be reduced?

Answer 7

By using loft insulators,cavity wall insulators and double glazed windowns

Question 8

Where is the energy we use innburning fossils fuels going?

Answer 8

Coal,oil or gas

Question 9

What is used as fuel in a nuclear power station?

Answer 9

Uranium or plutoniam

Question 10

What are biolfuels?

Answer 10

This is renewable sources of energy and can be used to generate electricity

Question 11

What is a wave generator?

Answer 11

Uses the motion of waves to make a floating turbine move up and down

Question 12

How are hydroeletric generators move and turned?

Answer 12

By water running downhill

Question 13

What are solar cells?

Answer 13

Flat,solide cells that use the suns energy to generate electricty directly

Question 14

What are solar heating pannels and how are they used

Answer 14

Take in the suns energy and uses it to heat up water

Question 15

Where does geothermal energy come from

Answer 15

Released from the radioactive substances deep within the earth

Question 16

What happens in a geothermal power station?

Answer 16

Water is pumped onto hot rocks underground to produce steam, which drives turbines at the surface

Question 17

What could happen when fossil fuels are burnt?

Answer 17

Can cause global warming as green house gasses are realised

Question 18

What does used neaclear fuels contain?

Answer 18

Radioactive waste

Question 19

What are renewbale resources?

Answer 19

• will never run out
• do not produce harmful waste
• can be used in remote places
• can disturb natural habitats

Question 20

What does abse load mean

Answer 20

A constant amount of electricity is provided by nuclear and coal fired power station

Question 21

Usually when are renewable energy resources used

Answer 21

When the demand is high and the conditions for the resources are suitable.