Reliance on Fossil Fuels- LO1:

Question 1

Fossil fuel

Answer 1

A fuel consisting of the remains of organisms preserved in rocks in the Earths crust with high carbon and hydrogen content

Question 2

Renewable energy

Answer 2

Is a form of energy derived from natural sources that do not use up natural resources to harm the environment

Question 3

Renewable energy sources will

Answer 3

-never run out
-can be replenished in a human lifetime
-E.g wind,solar,biomass and tidal sources

Question 4

Fossil fuels will

Answer 4

-Run out
-cannot be replenished in a human lifetime

Question 5

Formation of coal

Answer 5

-dead remains of plants
-fall and accumulate on the ground overtime
-increasing weight compresses remains into peat
-over hundreds of millions of years the peat gets further compressed and temp increase
-remains turn into different grades of coal which can be mined by humans

Question 6

Formation of crude oil and natural gas

Answer 6

-dead remains of sea organisms
-settle on bottom of ocean
-sediment gather on top causing increase in pressure leading to increased temp
-over hundreds of millions of years pressures and temperatures become sufficient to cause crude oil to form
-in underground crude oil wells in crude oil fields, natural gas gets trapped at top with crude oil below
- humans drill on land to extract fuels

Question 7

What year was the industrial revolution? and what was used to cover the transport cooking and heating needs of people?

Answer 7

1760s - biomass( wood, grass and vegetation) alongside wind

Question 8

% of energy needs met by fossil fuels in 1960s

Answer 8

94%

Question 9

% of energy needs met by fossil fuels in 2015

Answer 9

80%

Question 10

The fossil fuels

Answer 10

Coal, natural gas and crude oil