Earths atmosphere Flashcards
c9
1
Q
What % of the earths atmosphere is oxygen?
A
21%
2
Q
What % of the earths atmosphere is nitrogen?
A
78%
3
Q
What % of the earths atmosphere is carbon dioxide?
A
0.04%
4
Q
What % of the earths atmosphere is argon?
A
0.90%
5
Q
What % of the earths atmosphere is other?
A
0.06%
6
Q
What 4 components make up the earths atmosphere?
A
- carbon dioxide
- Argon
- oxygen
-nitrogen
7
Q
What do greenhouse gases do?
A
They absorb infra red radiation and keep the earths temperature where life can exist - but human activity increases the green house
8
Q
Consequences to increase in greenhouse gasses?
A
- temperature increase
- melting glaciers
- floods
- more tropical storms
9
Q
global dimming?
A
particulates reflecting light back into space, causing less light to reach earth
10
Q
What is a carbon footprint
A
- the total amount of co2 released over the lifecycle of the object
11
Q
how to reduce a carbon footprint?
A
- change lifestyle
- carbon capture & storage
- using alternative energy stores
12
Q
what are the disadvantages to reducing a carbon footprint?
A
- cost more
- people have to think its worth it
- bad development in poorer countries
13
Q
effects pf pollutants?
A
- global dimming
- acid rain
- irritated lungs
14
Q
A
