Formation of Earth's Atmosphere (AQA GCSE Chemistry Combined Science): 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 evolve in Earth's oceans?
When did algae first evolve in Earth's oceans?
About 2.7 billion years ago
What process did algae begin that changed Earth's atmosphere?
What process did algae begin that changed Earth's atmosphere?
Photosynthesis
What two changes did photosynthesis cause in the atmosphere?
What two changes did photosynthesis cause in the atmosphere?
down, up
What gas do plants take in from the air during photosynthesis?
What gas do plants take in from the air during photosynthesis?
Carbon dioxide
What gas do plants give out during photosynthesis?
What gas do plants give out during photosynthesis?
Oxygen
When could animals start to evolve?
When could animals start to evolve?
Once there was enough oxygen
Why couldn't animals exist before photosynthesis?
Why couldn't animals exist before photosynthesis?
They need oxygen to survive
What fossil fuel formed from dead plants?
What fossil fuel formed from dead plants?
Coal
What formed from dead plankton and sea creatures?
What formed from dead plankton and sea creatures?
Crude oil and natural gas
What happens to carbon dioxide in seawater?
What happens to carbon dioxide in seawater?
It dissolves
What do sea creatures use dissolved to make?
What do sea creatures use dissolved to make?
Shells and skeletons
What forms on the seabed from dead shells?
What forms on the seabed from dead shells?
Limestone