Exploring Earth's Atmosphere
Science
Year 8
13 questions
~26 mins
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About This Worksheet
A worksheet covering Earth's Atmosphere for Year 8 students.
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Exploring Earth's Atmosphere
Subject: ScienceGrade: Year 8
Name:
Date:
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Untitled Worksheet
Grade Year 8
A
Questions
Answer all questions. Show your working where appropriate.
1.
Which gas makes up the largest percentage of Earth's atmosphere?
[1 mark]AOxygen
BCarbon Dioxide
CNitrogen
DArgon
2.
True or False: Oxygen is the most abundant gas in the Earth's atmosphere.
[1 mark]3.
Explain the role of the ozone layer in the atmosphere.
[2 marks]4.
Calculate the pressure exerted by the atmosphere at sea level. Use the formula P = F/A where P is pressure, F is force (approximately 1013.25 hPa), and A is area.
[3 marks]5.
Match the following gases with their approximate percentage in the Earth's atmosphere:
[3 marks]1. Nitrogen
2. Oxygen
3. Carbon Dioxide
A78%
B0.04%
C21%
6.
Put the following layers of the atmosphere in order from closest to the Earth to farthest: Mesosphere, Troposphere, Stratosphere, Thermosphere.
[2 marks]1
2
3
4
5
7.
Fill in the blank: The _____ is the layer of the atmosphere where weather occurs.
[1 mark]8.
Discuss the impact of human activities on the greenhouse effect and global warming.
[6 marks]9.
True or False: The stratosphere is below the troposphere.
[1 mark]10.
Identify the gas primarily responsible for the greenhouse effect.
[1 mark]ANitrogen
BOxygen
CCarbon Dioxide
DMethane
11.
Explain why the mesosphere is colder than the stratosphere.
[2 marks]12.
Describe the importance of the troposphere for life on Earth.
[3 marks]13.
Which process is mainly responsible for the warming of the Earth's surface?
[1 mark]APhotosynthesis
BEvaporation
CGreenhouse Effect
DCondensation
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Details
- Created
- 12/30/2025
- Updated
- 12/30/2025
- Type
- worksheet