Evolution of the Atmosphere

• Chemistry
• Upper Secondary (Key Stage 4)
• GCSE

Name the two gases that make up most of the atmosphere

What fraction best represents the proportion of nitrogen?

1. 80%
2. 1/3
3. 4/5
4. 20%

Which of these percentages is closest to the value for carbon dioxide?

1. 40%
2. 4%
3. 0.4%
4. 0%

What is wrong with this pie chart?

By considering the information in the table and your knowledge of early Earth, evaluate which theory about the Earth’s early atmosphere is most likely.

1) Earth’s atmosphere extends up to 100 m above Earth’s surface

1. True
2. False

2) Earth’s early atmosphere consisted mostly of oxygen

1. True
2. False

3) Earth’s early atmosphere had lots of carbon dioxide

1. True
2. False

4) Earth’s current atmosphere is similar to the early one

1. True
2. False

01:24

Name 2 gases that make up the final 1% of the atmosphere

04:20

When and how did the planet Earth form?

05:57

What gas makes up the highest proportion of Venus' Atmosphere?

1. Water vapour
2. Nitrogen
3. Carbon Dioxide
4. Oxygen

07:01

How was nitrogen likely found in the atmosphere?

1. There was none
2. Ammonia (NH3)
3. Nitric Acid (HNO3)
4. Nitrogen molecules (N2)

08:24

The levels of which 2 gases would have decreased in this time?

09:21

What is the word equation for photosynthesis?

08:24

Place these events in the order they happened

The earth cooled

Rocks containing carbonate formed - locking away carbon dioxide

The oceans formed

Water vapour condensed forming rain

Carbon dioxide dissolved in oceans

07:01

What two gases made the majority of the atmosphere?

07:01

What was the surface of the early Earth like?

05:57

Why do scientists study Venus and Mars for ideas about the early Earth?

01:24

What fraction of the Earth's atmosphere is oxygen?

1. 1/5
2. 1/3
3. 20%
4. 1/8

01:24

What is the most common gas in our atmosphere?

1. Oxygen
2. Nitrogen
3. Water vapour
4. Hydrogen