The Atmosphere (Edexcel GCSE Chemistry Combined Science): Quizzes
📚Quizzes
Practise the questions
9 questions from this quiz
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Practise the questions
9 questions from this quiz
How long has the modern atmosphere existed in its current form?
How long has the modern atmosphere existed in its current form?
200 million years
What proportion of the atmosphere is nitrogen?
What proportion of the atmosphere is nitrogen?
Almost 80%
What proportion of the atmosphere is oxygen?
What proportion of the atmosphere is oxygen?
About 20%
Which gas is the most abundant in the atmosphere?
Which gas is the most abundant in the atmosphere?
Nitrogen
What is the crucial role of oxygen in living organisms?
What is the crucial role of oxygen in living organisms?
Respiration
What defines a trace gas in the atmosphere?
What defines a trace gas in the atmosphere?
Present in amounts less than 1%
Which of the following is a trace gas?
Which of the following is a trace gas?
Carbon dioxide
Which role do trace gases play in the environment?
Which role do trace gases play in the environment?
Climate regulation
How have atmospheric gas proportions changed over the last 200 million years?
How have atmospheric gas proportions changed over the last 200 million years?
Remained relatively stable