core content - energy

Question 1

coal

how is it converted into energy?

Answer 1

heart energy and hot gases convert water into steam that powers a turbine

Question 2

coal

advantages

Answer 2

stable
large scale
cheap to extract
reliable

Question 3

coal

disadvantages

Answer 3

emits pollution

impacts landscape

Question 4

oil

how is it converted into energy?

Answer 4

processed and split into petrols

power plants - its burnt to heat water and produces steam

Question 5

oil

advantages

Answer 5

stable
large scale
cheap to extract

Question 6

oil

disadvantages

Answer 6

highly polluting

Question 7

gas

how is it converted into energy

Answer 7

burning gas powers turbine

Question 8

gas

advantages

Answer 8

stable
large scale
cheap to extract
cleaner

Question 9

gas

disadvantages

Answer 9

highly polluting

Question 10

list some renewable energy sources

Answer 10

biomass 
biodiesel 
tidal
wind 
solar 
hydroelectric

Question 11

biomass

what is it and how is it converted into energy?

Answer 11

it’s organic matter

used via combustion

Question 12

biomass

advantages

Answer 12

waste from plants and farming can be used

Question 13

biomass

disadvantages

Answer 13

large areas needed

emits fumes

Question 14

biodiesel

what is it and how is it converted into energy?

Answer 14

made for natural elements

used in diesel powered vehicles

Question 15

biodiesel

advantages

Answer 15

used waste from plants and farming

no harmful chemicals

Question 16

biodiesel

disadvantages

Answer 16

large areas needed

Question 17

tidal

what is it and how is it converted into energy?

Answer 17

turbines generate electricity from the movement of tidal water
artificial tidal barrages

Question 18

tidal

advantages

Answer 18

no emissions
powerful
predictable and stable

Question 19

tidal

disadvantages

Answer 19

lower energy output
expensive to build
coastal areas

Question 20

wind

what is it and how is it converted into energy?

Answer 20

wind turbines creates electricity through a generator

Question 21

wind

advantages

Answer 21

freely available
remote areas
no emissions

Question 22

wind

disadvantages

Answer 22

unpredictable
unsightly
expensive

Question 23

solar

what is it and how is it converted into energy?

Answer 23

sunlight into electricity

converted into mechanical energy

Question 24

solar

advantages

Answer 24

reliable
more produced in strong sun
homes can have their own electricity

Question 25

solar

disadvantages

Answer 25

expensive to set up

effective depends on location

Question 26

hydroelectric

what is it and how is it converted into energy?

Answer 26

a dam traps water and turbine make electricity

Question 27

hydroelectric

advantages

Answer 27

large amount of low cost power secondary purpose

Question 28

hydroelectric

disadvantages

Answer 28

expensive to set up

can damage environment

Question 29

what is a power system?

Answer 29

network of components that supply transfer and use electric power.

Question 30

give examples of power systems

Answer 30

cells
solar cells
wind power
mains electricity

Question 31

description of batteries and cells

Answer 31

uses chemical energy to make electricity
expensive source
chemicals may leach into water sources

Question 32

description of solar cells

Answer 32

turns sunlight into electricity
provides free energy once initial costs covered
unsightly
non polluting

Question 33

description of mains electricity

Answer 33

supplied from power stations
alternating current
items need to be plugged into the mains to be powered

Question 34

description of wind power

Answer 34

wind into mechanical power or electricity
small versions can be built at home
dependant on the stefan of the wind