Life, Resources and Atmospheric Change

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  • Created by: Zara
  • Created on: 13-01-13 20:11
What does the primordial soup theory state?
That billions of years ago, the Earth's atmosphere had a lot of nitrogen, hydrogen, ammonia and methane
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What does the primordial soup theory say happens?
Lightening caused a chemical reaction between the gases causing the formation of amino acids. There became a soup of chemicals, which, when heated up, became a soup of compounds. This is when life formed
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Who were the men that created the primordial soup theory?
Miller and Urey
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Where do we get minerals and resources from?
The Earth's crust, oceans and atmosphere
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Why do we fractionally distill air?
To get a variety of different products (nitrogen and oxygen) for use in the industry
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Why is air filtered?
To remove dust
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Explain the process of fractional distillation
After the air is filtered, it is cooled to around -200'C and becomes a liquid.
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After this, what happens during cooling?
Durning cooling water vapour condenses and is removed. Carbon dioxide freezes and is removed.
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After this, what happens to the liquified air?
The liquified air then enters the fractionating column and is heated slowly.
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What happens to the remaining gases?
The remaining gases are separated by fractional distillation. Oxygen and argon come out together so another column is used to separate them.
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What does an increase in carbon dioxide cause?
Global warming - a type of climate change
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What are the oceans a natural store of?
Carbon dioxide
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Where do the oceans absorb carbon dioxide?
From the atmosphere
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What does the extra carbon dioxide we're releasing do to the oceans?
Makes them too acidic
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Why is this bad for coral and shellfish?
They won't be able to absorb any more carbon dioxide
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Other cards in this set

Card 2

Front

What does the primordial soup theory say happens?

Back

Lightening caused a chemical reaction between the gases causing the formation of amino acids. There became a soup of chemicals, which, when heated up, became a soup of compounds. This is when life formed

Card 3

Front

Who were the men that created the primordial soup theory?

Back

Preview of the front of card 3

Card 4

Front

Where do we get minerals and resources from?

Back

Preview of the front of card 4

Card 5

Front

Why do we fractionally distill air?

Back

Preview of the front of card 5
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