Global warming/Climate change

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  • Created by: Hope
  • Created on: 14-04-14 12:32
What gases in the atmosphere are contributing to global warming
Carbon dioxide and methane
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What are the consequences of the increase in the earths temperature
Rise in sea levels- Costal Flooding, Ice melting, Change in weather patterns - Droughts, Reduce biodiversity - Species unable to survive change in climate
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Where can carbon dioxide be sequestered?
Oceans, lakes, ponds, green plants, peat bogs
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Complete this sentence: Storing carbon dioxide is an important factor of...
Removing carbon dioxide from the atmosphere
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What are the 'Green House Gases'?
The gases in the atmosphere that act like an insulating layer
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What are the main green house gases?
Carbon dioxide and methane
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What do the green house gases do?
Absorb most of the heat that would normally be radiated out into space and re-adiate it towards to earth
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Complete this sentence: Biofuels are....
Carbon neutral
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Complete this sentence: Biofuels can be made of....
Natural products by fermentation
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What is fermentation?
Fermentation is when bacteria or yeast break sugars down by anaerobic respiration
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What are the two main types of biofuel?
Ethanol and biogas
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How is ethanol made?
The anaerobic fermenation of sugar
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How is biogas made?
The anaerobic fermentation of waste material
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What can be used to make ethanol?
Sugar cane juices or glucose from maize starch by carbohydrase
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How is ethanol made?
The ethanol is distilled to seperate it from the yeast and remaining glucose
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Where is ethanol used?
In some countries cars run on gasohol - A mixture of ethanol and petrol
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Complete this sentence: Biogas is mainly...
Methane and carbondioxide
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What can be used to make biogas?
Plant products and waste material
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What are the two types of generator that can produce biogas?
Batch and Continuous
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Complete this sentence: Biogas generators need to be kept...
At a constant temperature to keep the microorganisms respiring
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Explain Batch Gererators..
Make biogas in small batches, have to be manually loaded with waste, by-products have to be cleared away at end of each session
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Explain Continuous Generators...
Make biogas all the time, Waste material is continually fed in, Biogas is produced at a steady rate, More suitable for large-scale biogas projects
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What do ALL Biogas Generators have?
An inlet for waste material to be put in, An outlet for the digested material to be removed through and an outlet so the biogas can be piped to where it is needed
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At what temperature does the bacteria used in biogas generators work best?
30 Degrees
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What are the advantages of Biofuels
The material needed is cheap and avaliable, Greener alternative to fossil fuels, Reduces amount of methane being released into atmosphere, Better fertiliser
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Card 2

Front

What are the consequences of the increase in the earths temperature

Back

Rise in sea levels- Costal Flooding, Ice melting, Change in weather patterns - Droughts, Reduce biodiversity - Species unable to survive change in climate

Card 3

Front

Where can carbon dioxide be sequestered?

Back

Preview of the front of card 3

Card 4

Front

Complete this sentence: Storing carbon dioxide is an important factor of...

Back

Preview of the front of card 4

Card 5

Front

What are the 'Green House Gases'?

Back

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