Energy 2

Question 1

what are the four non- renewable energy sources?

Answer 1

• coal
• oil
• natural gas
• nuclear fuels

Question 2

advantages of fossil fuels

Answer 2

• relase lots of energy
• don‘t rely on the weather
• don‘t need to spend money on new technology to use them

Question 3

disadvantages of fossil fuels

Answer 3

• release carbon dioxide which is a greenhouse gas which contributes to global warming
• releases sulfur dioxide which causes acid rain, which is damaging to forests and other wildlife
• non - renewable

Question 4

how do we use fossil fuels in a power station?

Answer 4

the heat energy released from the fuel is jsed to heat water which releases steam which turns a turbine, this turbine uses kinetic energy to turn the generator which then converts the kinetic energy into electrical energy.

Question 5

wind power

Answer 5

• don‘t pollute
• efficent
• weather dependent
• ruin the landscape
• expensive

Question 6

nuclear fission

Answer 6

drives a turbine as in a conventional power station

Question 7

facts

Answer 7

the sun is the source of all our energy except for geothermal, nuclear and tidal. both the sun and moon have a tidal effect on the earth, but the main source of tidal energy is the moon.

the sun itself is powered by nuclear fusion reactions (where the small nuclei of hydrogen atoms join to make larger nuclei that are helium)