Energy resources

Question 0

Coal cons -3

Answer 0

• Gives off carbon dioxide when burned
• Fossil fuel
• releases sulphur dioxide which combines with water to form acid rain

Question 1

Coal pros -2

Answer 1

• ‘ready made’ fuel

- relatively cheap both to mine & to convert into electricity

Question 2

Oil pros -2

Answer 2

• ‘ready made’ fuel

- relatively cheap both to mine & to convert into electricity

Question 3

Oil cons

Answer 3

• Limited supply
• Gives off carbon dioxide & sulphur dioxide (causes acid rain) when burned
• Fossil fuel

Question 4

Gas pros -3

Answer 4

• slightly cleaner than oil/coal
• cheap
• ready made fuel

Question 5

Gas cons

Answer 5

Limited supply

Gives off pollutants when burned

Question 6

Solar pros -3

Answer 6

• renewable energy resource
• no fuel costs once installed
• no harmful polluting gases

Question 7

Tidal pros -3

Answer 7

• good for islands (UK)
• can generate lots
• tidal barrage can multitask as bridge & flood defence

Question 8

Tidal cons -3

Answer 8

• costly construction
• only a few suitable estuaries
• Can have a negative impact on wildlife & tidal flow

Question 9

Geothermal pros

Answer 9

Potentially infinite supply

Question 10

Geothermal cons -5

Answer 10

• expensive
• only in volcanic areas
• unreliable
• geothermal & volcanic activity might calm down, leaving power stations redundant
• dangerous elements found underground must be disposed of carefully

Question 11

Wind pros -2

Answer 11

• non pollutant

- renewable

Question 12

Wind cons -3

Answer 12

• noisy
• unreliable
• costly to set up

Question 13

HEP pros 3

Answer 13

Creates water reserves as well as energy supplies
Very reliable
Can operate in reverse - pump water back up into high level reservoirs

Question 14

HEP cons -3

Answer 14

• can cause flooding
• costly construction
• dams can have major ecological impact on local hydrology

Question 15

Non renewable energy resource definition

Answer 15

One that effectively cannot be replaced once it has been used

Question 16

Which fossil fuel releases the most carbon dioxide into the atmosphere when burned?

Answer 16

Coal

Question 17

Nuclear pros

Answer 17

• ‘clean’

- cost per unit of electricity low

Question 18

Nuclear cons

Answer 18

• power stations expensive to build
• risk of accidents
• disposal of radioactive material once a power station is finished with
• non renewable resource

Question 19

How do hydroelectric power stations work?

Answer 19

• they use the stored gravitational potential energy (GPE) of water in high reservoirs built in mountains
• the GPE is converted to kinetic energy (KE) as the water flows down the mountain to the power station below

Question 20

The greenhouse effect

Answer 20

When greenhouse gases trap the suns heat in the earths atmosphere & cause the average temperature of the atmosphere to rise

Question 21

How does tidal energy work

Answer 21

A tidal barrage (a kind of dam) is built across estuaries, forcing water through gaps

Question 22

How does geothermal energy work

Answer 22

Cold water is pumped underground and comes out as steam

Steam can be used for heating or to power turbines creating electricity