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Flashcards in C1 Atmosphere Deck (20)
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1

How much oxygen is in the present day atmosphere?

About 20%

2

How much nitrogen is in the present day atmosphere?

About 78%

3

How much argon is in the present day atmosphere?

About 1%

4

Give the other gases present in the present day atmosphere.

Water vapour, carbon dioxide and noble gases

5

What released gases into the atmosphere for the first billion years?

Volcanoes

6

What was made from the condensation of water vapour?

Oceans

7

What gases were probably in the early atmosphere?

Carbon dioxide, water vapour, methane and ammonia

8

What gas was not probably present in the early atmosphere?

Oxygen

9

The ‘primordial soup’ theory is one theory of how life was formed millions of years ago, what was needed in this theory?

Hydrocarbons, ammonia and lightning

10

What experiment tried to recreate this theory?

Miller-Urey experiment

11

What produced the oxygen present in today’s atmosphere?

Plants

12

How was the carbon dioxide from the early atmosphere locked up?

In sedimentary rocks as carbonates and fossils fuels

13

Oceans act as a reservoir for carbon dioxide, what effect will increased carbon dioxide have?

Make the oceans more acidic and effect the marine environment

14

How is carbon dioxide in the atmosphere increased?

Burning fossil fuels

15

What absorbs carbon dioxide from the atmosphere?

Plants for photosynthesis

16

How can the gases in air be separated?

Fractional distillation

17

Why can gases in air be separated?

Different boiling points

18

What is nitrogen used for?

Inert gas in packaging and making fertilisers

19

What is oxygen used for?

Rockets fuel and medical use

20

What is argon used for?

Light bulbs and arc welding