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Flashcards in 9 Atmosphere Deck (34)
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1

What is the approximate proportion of nitrogen in Earth's current atmopshere?

80%

2

What is the approximate proportion of oxygen in Earth's current atmopshere?

20%

3

There are small proportions of water vapour, noble gases and which other gas in Earth's current atmosphere?

carbon dioxide

4

When Earth was formed it's atmosphere was similar to which planets?

Venus and Mars

5

Earth's early atmosphere was similar to Venus and Mars, what do their atmosphere's consist of?

Carbon dioxide with little or no oxygen

6

What produced the gases present in Earth's early atmosphere?

Volcanoes

7

Which gases were present in Earth's early atmosphere?

Carbon dioxide water vapour and nitrogen with small amounts of methane and ammonia

8

Why have theories about Earth's early atmosphere developed and changed over time?

Evidence is limited

9

By what process do algae and plants produce oxygen?

Photosynthesis

10

Write the word equation to represent photosynthesis

carbon dioxide + water gives oxygen + glucose

11

How did the world's oceans form?

The Earth's temperature cooled, causing water vapour in the air to condense

12

How did the oceans reduce atmospheric levels of carbon dioxide in Earth's early atmosphere?

Carbon dioxide dissolved in the oceans

13

How did algae and plants reduce levels of carbon dioxide in Earth's early atmosphere?

By photosynthesising

14

What was formed when shells of organisms made using dissolved carbon dioxide, fell to the bottom of the ocean and were covered and compressed

Sedimentary rock

15

What was formed when plants that grew millions of years ago, died and were trapped and compressed under rocks

Coal

16

What was formed when plankton that lived in the ocean millions of years ago, died and were trapped and compressed under rocks

Crude Oil and Natural Gas

17

Name three greenhouse gases

Water Vapour, Carbon Dioxide and Methane

18

Describe the wavelength of radiation that comes from the sun

Short Wave

19

Describe the wavelength of radiation that is reflected back off the Earth

Long Wave

20

What happens to the long wave radiation that is reflected from the Earth in the atmosphere?

It is absorbed by the greenhouse gases

21

What is the name given to the process that warms of the surface of the Earth

The greenhouse effect

22

What human activities increase carbon dioxide levels?

Deforestation and burning fossil fuels

23

What human activities increase methane levels?

Farming animals and landfill

24

What is the name given to the increasing average temperature of the Earth?

Climate Change

25

Name an effect of climate change

Increased flooding, changes in rainfall patterns, frequency of storms, amount of water in a habitat etc...

26

What is the name given to the total amount of carbon dioxide and other greenhouse gases emitted over the full lifecycle of a product, service or event

Carbon footprint

27

What is produced from the complete combustion of a hydrocarbon fuel?

carbon dioxide and water

28

Which products could be produced from the imcomplete combustion of a hydrocarbon fuel

carbon dioxide, water, carbon monoxide, carbon particulates

29

Which gas is produced when fuels are burned and contain the impurity sulfur?

sulfur dioxide

30

Which gases are produced when nitrogen and oxygen react in the very high temperatures of a car engine?

oxides of nitrogen