Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

chemistry > c9 - atmostphere > Flashcards

c9 - atmostphere Flashcards

1
Q

how much oxygen

A

21

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

nitrogen

A

78

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

other gases

A

1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

characteristics of the early atmostphere

A

No O2
Lots of H2O vapour
Lots of CO2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

why is evidence for the early atmosphere limited

A

BC OF THE TIME SCALE 4.6 BILLION YEARS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

todays atmostphere

A

O2 increased:
H2O vapour decreased
CO2 decreased:

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

why did oxygen increase

A

photosynthesis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

why is h20 decrease

A
  • earth cooled
  • vapour condensed
  • formed oceans
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

why did CO2 decrease

A

dissolved in oceans
locked up in rocks
absorbed by plants

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

how was coal formed

A

huge swampy forests
dead plant material
with heat pressure and no air

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

how was oil and gas formed

A

dead marine organisms
with heat pressure and no air

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

greenhouse effect

A

Earth absorbs short wavelengths
Long wavelengths are radiated as heat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

examples of greenhouse gases

A

water vapour
co2
methane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

manmade carbon dioxide

A

Making cement & burning fossil fuels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

manmade and natural methane

A

Decomposing plant material
Rice paddy fields, cattle & coal mines

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

manmade and natural water

A

Evaporation from oceans, lakes & rivers
Burning hydrocarbon fuels

17
Q

signs of climate change

A

Melting ice caps
Storms
Famine

18
Q

how can carbon footprint be reduced

A

Saving energy
Renewable resources
Recycling

19
Q

Carbon dioxide

A

Global warming

20
Q

Carbon monoxide

A

Colourless, odourless toxic gas

21
Q

Carbon particulates

A

Global dimming

22
Q

Sulfur dioxide

A

Respiratory problems and acid rain

23
Q

Nitrogen oxides

A

Respiratory problems and acid rain

chemistry (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions