Evolution of the Atmosphere Practice Questions

Question 1

Q1. Knowledge Recall (2 marks)

Define the term 'atmosphere'.

Question 2

Q2. Application (3 marks)

Explain how the composition of the Earth's atmosphere has changed over time.

Question 3

Q3. Data Analysis (3 marks)

The following table shows the percentage composition of the atmosphere at different stages in Earth's history:

Time

Nitrogen (%)

Oxygen (%)

Carbon dioxide (%)

4 billion years ago

1 billion years ago

Plot a line graph to show the change in oxygen concentration over time.

Question 4

Q4. Knowledge Recall (2 marks)

Name the process that removes carbon dioxide from the atmosphere.

Question 5

Q5. Application (3 marks)

How does volcanic activity contribute to the evolution of the atmosphere?

Question 6

Q6. Calculations (4 marks)

The current atmospheric pressure at sea level is 101 kPa. Convert this pressure to atmospheres (atm). (1 atm = 101 kPa)

Question 7

Q7. Knowledge Recall (2 marks)

What is the role of the greenhouse effect in the evolution of the atmosphere?

Question 8

Q8. Application (3 marks)

Explain how the increase in oxygen levels in the atmosphere influenced the evolution of life on Earth.

Question 9

Q9. Chemical Equations (4 marks)

Balance the following equation for photosynthesis:

6CO2 + ____H2O + sunlight → C6H12O6 + ____O2

Question 10

Q10. Knowledge Recall (2 marks)

Name the gas that was most abundant in the primitive atmosphere.

Present day

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