Formation of Earth's Atmosphere (AQA GCSE Chemistry Combined Science): Quizzes
📚Quizzes
Practise the questions
8 questions from this quiz
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Practise the questions
8 questions from this quiz
Around how long ago did algae and early plant life first appear on Earth?
Around how long ago did algae and early plant life first appear on Earth?
2.7 billion years ago
Which organisms first carried out photosynthesis to produce oxygen in the atmosphere?
Which organisms first carried out photosynthesis to produce oxygen in the atmosphere?
Algae and early plant life
What process increased the amount of oxygen in Earth's atmosphere?
What process increased the amount of oxygen in Earth's atmosphere?
Photosynthesis
What two substances does photosynthesis produce?
What two substances does photosynthesis produce?
Glucose and oxygen
Which reactants are converted during photosynthesis?
Which reactants are converted during photosynthesis?
Carbon dioxide and water
What energy source is required for photosynthesis to occur?
What energy source is required for photosynthesis to occur?
Sunlight
Over what timescale did oxygen accumulate in the atmosphere through photosynthesis?
Over what timescale did oxygen accumulate in the atmosphere through photosynthesis?
Millions of years
What did the buildup of oxygen in the atmosphere enable?
What did the buildup of oxygen in the atmosphere enable?
Development of more complex life forms