Chemistry of the Atmosphere AQA GCSE

The current proportion of gases is approximately

• 20% nitrogen, 80% oxygen and small proportions of various other gases.

• 80% nitrogen, 20% oxygen and small proportions of various other gases.

• 70% nitrogen, 30% oxygen and small proportions of various other gases.

• 30% nitrogen, 70% oxygen and small proportions of various other gases.

The early atmosphere of Earth contained gases due to ...

• Plant life

• Algae

• Volcanic activity

• Dinosaurs

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NGSS.HS-ESS1-6

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The Early atmosphere of Earth was similar to that of ................... .... .............. today

• Mars and Venus

• Neptune and Mercury

• Uranus and Mars

• Venus and Jupiter

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NGSS.HS-ESS1-6

What was the composition of Earth's early atmosphere?

• Mostly methane, little to no carbon dioxide

• Mostly oxygen, little to no carbon dioxide

• Mostly nitrogen, some oxygen

• Mostly carbon dioxide, little to no oxygen

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NGSS.HS-ESS1-6

True or false. Volcanoes produced carbon dioxide, water vapour, methane and ammonia.

• True

• False

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Oxygen in the atmosphere increased due to .....

• Respiration

• Photosynthesis

• Distillation

• Evaporation

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NGSS.HS-LS1-5

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Which is the correct equation for photosynthesis?

• carbon dioxide + oxygen → glucose + water

• carbon dioxide + water→ glucose + oxygen

• carbon dioxide + glucose → water + oxygen

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How did the evolution of plants change the composition of the atmosphere?

• Increase carbon dioxide and decrease oxygen

• Decrease carbon dioxide and increase oxygen

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Why are greenhouse gases important?

• They maintain temperature to support life

• They maintain atmospheric pressure to support life

• They maintain oxygen concentration to support life

• All of the previous answers.

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NGSS.HS-ESS2-4

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Which of the following are greenhouse gases?

• Water vapour, oxygen and methane.

• Oxygen, carbon dioxide and methane.

• Water vapour, carbon dioxide and oxygen.

• Water vapour, carbon dioxide and methane.

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NGSS.HS-ESS2-6

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