The Atmosphere Flashcards

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1
Q

What is the air made up of

A

Oxygen Nitrogen Argon Carbondioxide Water vapour Other gases

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2
Q

Give the percentage of the air that the airs gases make up

A

Oxygen-21% Nitrogen-78% Argon,carbon dioxide, water vapour, other gases- 1%

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3
Q

Explain the atmosphere

A

The atmosphere is the layer of gases around the Earth.

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4
Q

Explain briefly the method of the experiment To show that approximately one-fifth of air is oxygen (O2)

A
  1. Put steel wool into the bottom of a graduated cylinder 2. Invert the cylinder in a basin of water. 3. Leave for one week. 4. Measure the height that the water rises up the cylinder.
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5
Q

Explain the results of the experiment To show that approximately one-fifth of air is oxygen (O2)

A
  • The steel wool rusts, and uses up the oxygen in the graduated cylinder. - Water is drawn up to replace the oxygen - The height the water rises is approximately one-fifth of the overall height of the cylinder above the water.
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