Evolution of the atmosphere (AQA GCSE Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
When did algae first appear on Earth?
When did algae first appear on Earth?
About 2.7 billion years ago
What does photosynthesis release into the air?
What does photosynthesis release into the air?
Oxygen
What gas does photosynthesis take in from the air?
What gas does photosynthesis take in from the air?
Carbon dioxide
What happened to carbon dioxide levels as photosynthesis became more common?
What happened to carbon dioxide levels as photosynthesis became more common?
They went down
What happened to oxygen levels as photosynthesis became more common?
What happened to oxygen levels as photosynthesis became more common?
They went up
How long after algae appeared was there enough oxygen for animals to evolve?
How long after algae appeared was there enough oxygen for animals to evolve?
About 1 billion years
What did coal form from?
What did coal form from?
Dead plants
What did crude oil and natural gas form from?
What did crude oil and natural gas form from?
Dead sea creatures
What do crude oil and natural gas contain?
What do crude oil and natural gas contain?
Hydrocarbons
How long did fossil fuel formation take?
How long did fossil fuel formation take?
Millions of years
What do sea creatures use dissolved to make?
What do sea creatures use dissolved to make?
Shells and skeletons
What forms from dead sea creature shells over time?
What forms from dead sea creature shells over time?
Limestone rock