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Flashcards in The Earth's atmosphere Deck (6)
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1

What was the Earth's early atmosphere formed by?

volcanic activity

2

What did the Earth's early atmosphere consist of?

mainly carbon dioxide
Also small amounts of:
-nitrogen
-water vapour
-ammonia
-methane

3

What is the atmosphere?

The relatively thin layer of gases that surround Earth.

4

What is a carbon footprint?

The total amount of carbon dioxide and other greenhouse gases emitted over the full life cycle of a product, service or event.

5

What did photosynthesis do to the atmosphere?

-Decreased the amount of carbon dioxide.
-Produced more oxygen, making the Earth's atmosphere richer in oxygen, meaning animals could now survive.

6

What are the (3) main greenhouse gases?

-carbon dioxide
-methane
-water vapour