AQA Topic 9 - Atmosphere Foundation

How did the early atmosphere form?

• Burning fossil fuels

• Volcanoes

• The big bang

• Deforestation

What was the main gas in the early atmopshere

• Carbon Dioxide

• Nitrogen

• Oxygen

• Methane

How did the oceans form?

• They were already there

• Water vapour evaporated

• Water vapour cooled & condensed

• Earth flooded and it was left behind

What is the main gas in the current atmosphere?

• Carbon Dioxide

• Nitrogen

• Oxygen

• Methane

What is the percentage of Oxygen in the current atmosphere

• 1%

• 78%

• 21%

What is the percentage of Nitrogen in the current atmosphere

• 1%

• 78%

• 21%

What is the process that increases the amount of Oxygen in our atmosphere

• Photosynthesis

• Dissolves in Oceans

• Formation of sedimentary rocks

• Formation of fossil fuels

• Respiration

What are the 4 processes that decrease the amount of Carbon dioxide in our atmosphere?

• Photosynthesis

• Dissolves in Oceans

• Formation of sedimentary rocks

• Formation of fossil fuels

• Respiration

What are the 3 greenhouse gases?

• Carbon dioxide

• Methane

• Oxygen

• Water Vapour

Which is the main gas responsible for Global warming

• Methane

• Oxygen

• Water Vapour

• Carbon Dioxide