C13.1-C13.5 The Atmosphere - knowledge quiz

What were the three main gases in the early atmosphere?

• hydrogen

• water vapour

• carbon dioxide

• methane

• nitrogen

What is thought to have released gases into the early atmosphere?

What was formed when the earth cooled?

• ice

• oceans

• volcanoes

• plants

What element is stored in the following: fossil fuels, oceans, rocks & plants?

• carbon dioxide

• carbon

• oxygen

• methane

What process in plants reduced the carbon dioxide levels in the early earth's atmosphere?

What process in plants caused oxygen levels to rise in the early atmosphere?

• respiration

• oxidation

• photosynthesis

• reduction

When ammonia reacts with oxygen, which gas is released?

• ammonium

• methane

• oxygen

• nitrogen

What are the 3 most prominent gases in today's atmosphere?

• hydrogen

• nitrogen

• carbon dioxide

• oxygen

• argon

How much Nitrogen is there is today's atmosphere?

• 21%

• <1%

• 78%

• 100%

How much Argon is there is today's atmosphere?

• 21%

• <1%

• 78%

• 100%