What natural process is thought to have created the early atmosphere and which was the main gas?

Volcanic action created the early atmosphere and carbon dioxide was the main gas

Photosynthesis created the early atmosphere and oxygen was the main gas

Cosmic rays created the early atmosphere and nitrogen was the main gas

Global warming created the early atmosphere and carbon dioxide was the main gas

Argon is a noble gas and is inert (does not react with other substances). For that reason it is used in light bulbs but how is it obtained from the air?

The air is solidified and argon is collected as the solid air sublimes

The air is liquified and argon can be collected by fractional distillation

It can be filtered out from the air by using a special filter

It is made from other chemicals

What may have happened to the rest of the carbon dioxide from the early atmosphere?

It has been changed into other gases by radiation from the Sun

It was absorbed by the oceans and then has been locked into rocks like limestone

It has been absorbed by lava from volcanoes

The first green algae-like plants evolved about 2,000 million years ago. How would this have affected the early atmosphere?

It reduced the carbon dioxide levels and increased the amount of oxygen

It started to fix nitrogen into the soil

It converted methane into ammonia which was then converted to oxygen by animals

It would not have caused any changes to the early atmosphere

The level of carbon dioxide in the atmosphere has remained almost the same for 200 million years. Since the start of the twentieth century it has increased dramatically. What is thought to have caused this?

The development of the motor car

Why is nitrogen used in food packaging?

It makes the food lighter and easier to transport

It is cheaper than using all of the air

It makes food taste a lot better

It is unreactive and helps to keep the food fresher

GCSEScience★★ Medium

GCSE Science Chemistry - Earth's Atmosphere (AQA) Quiz

Revise Earth's atmosphere for GCSE Chemistry. Take this quiz to explore gases in the atmosphere, their roles in life, and how they protect the Earth from harm.

Written by Daniel FosterReviewed by Dr. Emma ClarkeUpdated 17 Mar 2026

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Quiz details

Topic: Chemistry Earths Atmosphere Aqa Syllabus A

Questions: 10

Duration: 10 min

Difficulty: ★★ Medium

Focus: applying Chemistry Earths Atmosphere Aqa Syllabus A with consistent method and answer precision.

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Not checking instruction verbs
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It measures applied accuracy in chemistry earths atmosphere aqa syllabus a, not just definition recall.

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Fix one error category first, then retake before moving to the next related quiz.

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Use more Science quizzes to widen coverage, then switch to GCSE Science revision topics before full-paper timing.

Description

Revise Earth's atmosphere for GCSE Chemistry. Take this quiz to explore gases in the atmosphere, their roles in life, and how they protect the Earth from harm.

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