Chemistry Of The Atmosphere

Question 1

What were the main gases in the early atmosphere?

Answer 1

• Carbon Dioxide
• Nitrogen
• Ammonia
• Methane
• Water Vapour

Question 2

What did the gases in the early atmosphere come from?

Answer 2

Volcanic Activity

Question 3

What 2 planets was the early atmosphere similar to?

Answer 3

Mars and Venus

Question 4

What happened to the water vapour in the early atmosphere?

Answer 4

Water Vapour cooled and condensed to form oceans

Question 5

What gas was also in the oceans?

Answer 5

Carbon Dioxide

Question 6

What was the role of algae and simple green plants in the early atmosphere?

Answer 6

Photosynthesis

Question 7

What did photosynthesis do to the CO2 levels?

Answer 7

Make them decrease

Question 8

What did photosynthesis do to the Oxygen levels?

Answer 8

Make them increase

Question 9

How are the fossil fuels Oil and Gas formed from?

Answer 9

Dead algae

Question 10

What is the fossil fuel coal formed from?

Answer 10

Dead plants

Question 11

How do plants turn into fossil fuels?

Answer 11

Decompose under pressure for millions of years

Question 12

Why was rising oxygen levels in the early atmosphere important?

Answer 12

It allowed respiring organisms such as simple animals to evolve

Question 13

What is the word equation for photosynthesis?

Answer 13

Carbon dioxide + Water —> Glucose + Oxygen

Question 14

What problem does an increase in Carbon Dioxide lead to?

Answer 14

Global Warming