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Bio-fuels and Non-Renewables


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  • Bio fuels = renewable energy = made from plants and waste = can be in any state (solid, liquid or gas)
  • Can be burnt to produce electricity
  • Carbon neutral
  • Reliable = plants take a short amount of time to grow
  • Cannot meet high energy supplies when there is a demand for energy
  • Biofuels are stored for when they are needed
  • Growing crops from biofuels = not enough space or water for food crops
  • To make space to grow crops = deforestation = lots of species losing their habitats
  • Decay and burning of vegetation = co2 and methane released
  • Fossil fuels and nuclear fuels = reliable
  • Enough to meet current demands = as extracted from earth at a fast rate = so, can respond quickly when there is an energy surge
  • They are running out
  • running costs aren’t expensive
  • all fossil fuels, when burnt release CO2 = adds to greenhouse effect = contributes to global warming
  • burning coal and oil = sulphur dioxide released = acid rain = harmful to trees and buildings
  • acid rain can be reduced by removing sulphur from fuel before burning
  • coal mining = ruins the landscape
  • oil spillages = serious environmental problems
  • nuclear power = clean. Nuclear waste = dangerous & difficult to dispose of
  • nuclear fuel = cheap
  • overall cost of nuclear power = high
  • major risks for example Fukushima disaster in Japan

How long have you…? (present perfect 4) Exercises


 

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Use the information given to create questions beginning with ‘How long…?’

• It is snowing.

• The weather is shining.

• John and Kate are married.

• My brother has gone on holiday.

• My aunty and uncle live in Canada.

• My sister is a teacher.

• I work at the chemist.

• I’ve known Susan since I was a baby.

• Jonathan is learning to speak to Mandarin.

 

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Fill in the missing gaps in the sentences using the present perfect (=has/have + past participle)

• I have known Kate a long time.

• My brother has been playing the piano he was 11 years old.

• My mum and dad on holiday to America. They

gone since last Sunday.

• I Ben and Emma since primary school.

We to the same primary and secondary school.

• My sister learning to speak French because she
is going to France next month.

 

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Use the appropriate words in the missing gaps.

have you lived       lives      to

has been       works        have known

I have bought       have worked.

• My sister in Spain. She is studying Spanish

with her friend Rosie. I Rosie since I was 5.

• Spencer like with Jamie. They have worked

together for 2 years.

• How long in Australia?

• a new dress for prom.

• He to Thorpe park.

 

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Challenge: Create 4 of your own questions beginning with ‘How long……?’

1.

2.

3.

4.

 

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