Formation of Earth's Atmosphere (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Quizzes
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10 questions from this quiz
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Practise the questions
10 questions from this quiz
For how long has the modern atmosphere existed in its current form?
For how long has the modern atmosphere existed in its current form?
200 million years
What percentage of the atmosphere is made up of nitrogen?
What percentage of the atmosphere is made up of nitrogen?
Almost 80%
Which gas is the most abundant in the atmosphere?
Which gas is the most abundant in the atmosphere?
Nitrogen
What percentage of the atmosphere does oxygen account for?
What percentage of the atmosphere does oxygen account for?
About 20%
What is the main role of oxygen in the atmosphere?
What is the main role of oxygen in the atmosphere?
Respiration in living organisms
What proportion defines trace gases in the atmosphere?
What proportion defines trace gases in the atmosphere?
Less than 1%
Which of the following is a trace gas in the atmosphere?
Which of the following is a trace gas in the atmosphere?
Carbon dioxide
Which of these is an example of a trace gas?
Which of these is an example of a trace gas?
Water vapour
What important role do trace gases play?
What important role do trace gases play?
Climate regulation
How have the proportions of atmospheric gases changed over the last 200 million years?
How have the proportions of atmospheric gases changed over the last 200 million years?
Remained relatively stable