Formation of Earth's Atmosphere (AQA GCSE Chemistry Combined Science): Flashcards
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13 cards from this deck
Time when algae first evolved on Earth
Time when algae first evolved on Earth
2.7 billion years ago
Process algae started in the oceans
Process algae started in the oceans
Photosynthesis
Effect of photosynthesis on levels
Effect of photosynthesis on levels
Decreased (went down)
Effect of photosynthesis on oxygen levels
Effect of photosynthesis on oxygen levels
Increased (went up)
Gas plants take in during photosynthesis
Gas plants take in during photosynthesis
Carbon dioxide
Gas plants release during photosynthesis
Gas plants release during photosynthesis
Oxygen
Chemical equation for photosynthesis
Chemical equation for photosynthesis
When animals could start to evolve
When animals could start to evolve
Once there was enough oxygen in the atmosphere
Fossil fuel formed from dead plants
Fossil fuel formed from dead plants
Coal
Fossil fuels from dead plankton & sea creatures
Fossil fuels from dead plankton & sea creatures
Crude oil and natural gas
What happens to in seawater
What happens to in seawater
It dissolves
What sea creatures use dissolved for
What sea creatures use dissolved for
Making shells and skeletons
Rock formed from dead shells on seabed
Rock formed from dead shells on seabed
Limestone