Chapter 3 Energy Resources

Question 1

What are renewable energy sources

Answer 1

Energy that won’t run out and don’t provide much energy and some are unreliable

Question 2

5 examples of renewable energy
Bi
Wi
Su
Hy
Ti

Answer 2

Bio fuels
Wind
Solar
Hydro electricity
Tidal

Question 3

What are fossil fuels

Answer 3

Natrual reseouces that form underground over millions of years and are burnt to provide energy

Question 4

3 main fossil fuels

Answer 4

Coal,oil,natural gas

Question 5

Pros of fossil fuels

Answer 5

Reliable
Extraction costs and building infrastructure for it are cheap

Question 6

Cons of fossil fuels

Answer 6

Environmental problems with co2 into air
Contributing to global warming
Oil spillages affect animals
Burning coal and oil releases sulfur dioxide causing acid rain

Question 7

Pros and cons of nuclear power

Answer 7

Reliable
Dosen’t decompose

Expensive power plants
Hard to dispose waste products

Question 8

What are bio fuels

Answer 8

Created from plant or animal products and can be burnt to produce electricity

Question 9

Features of bio fuels
Reliability
Linking to carbon

Answer 9

Carbon neutral
Reliable as can be grown wherever but usual problems with plants

Question 10

Cons of bio fuels

Answer 10

Very high cost as space needed and water

Question 11

How do wind turbines produce electricity

Answer 11

Wind power rotates blades produced electricity

Question 12

Costs of wind turbines

Answer 12

Initial costs expensive but running costs cheap

Question 13

4 cons of wind turbines

Answer 13

Lots needed to produce good amount
Noisy
Spoil the view
Only work when windy

Question 14

Costs of solar power

Answer 14

Initial costs high but no running costs

Question 15

Cons of solar power

Answer 15

Weather dependent

Question 16

How is hydro-electricity produced

Answer 16

Dammed water driving a water turbine and generator

Question 17

Features of hydro electricity
Costs and reliability

Answer 17

Intial costs high with minimal running costs
Reliable energy source

Question 18

Advantage of hydro electricity

Answer 18

Immediately respond to increased electricity demand as more water can be let through the turbine

Question 19

What are tidal barrages

Answer 19

Big dams built across river estuaries with turbines in them

Question 20

How do tidal barrages produces electricity

Answer 20

As tide comes in it fills the estuary then the water is left out through turbines at a controlled speed to generate electricity

Question 21

3 disadvantages of tidal barrages

Answer 21

Affect boat access
They can spoil the view
They alter the habitat for wildlife

Question 22

How reliable are tidal barrages

Answer 22

Tides occur twice a day so are quite reliable but the height of tide is a variable as barrages don’t work when the water level is the same on either side

Question 23

Costs of tidal barrages

Answer 23

Initial costs are moderately high but there are no fuel costs and there are minimal running costs