Ch 24 Sources of Energy

Question 1

name three fossil fuels

Answer 1

coal, oil, gas

Question 2

how does a coal fired power station work

Answer 2

1. coal burns and heats water which produces steam
2. steam goes through pipe and has kinetic energy which is transferred into a turbine which spins the generator
3. the generator converts kinetic energy into electricity which is sent to homes via power lines
4. the steam has been used to the. the turbines and it loses energy and turns back to water

Question 3

name 6 renewable energy sources

Answer 3

solar energy, wind energy, hydroelectric power, geothermal energy, biomass, wave energy

Question 4

what advantages are there to nuclear power

Answer 4

doesn’t add to climate change
lasts a long time
small amount of waste

Question 5

what are the two ways of producing energy from the nucleus of an atom

Answer 5

1. nuclear fission

2. nuclear fusion

Question 6

explain nuclear fission

Answer 6

when the nucleus of the atom is bombarded with neutrons it splits into two parts. it converts its nuclear energy into heat energy

Question 7

what are some problems with nuclear fission

Answer 7

waste from uranium is radioactive
uranium needs to be mined
radioactive material decays slowly
can cause a chain reaction

Question 8

explain nuclear fusion

Answer 8

when two smaller nuclei combine to form one large nucleus

Question 9

name three advantages of nuclear fusion

Answer 9

more energy produced than fission
hydrogen isotopes can be sourced easily from the ocean
no possibility of uncontrolled chain reaction