C11 and C12 - Earth's Atmosphere/Resouces Flashcards
1
Q
Gases in Current Earth’s Atmosphere
A
Nitrogen - 78%
Oxygen - 21%
Other (CO.2/Water Vapour/Argon) - 1%
2
Q
Early Earth’s Atmosphere
A
- Mainly Carbon Dioxide due to Volcanic Activity with a bit of Nitrogen and Oxygen
- Its state is similiar to Venus/Mars now
3
Q
Nitrogen
A
- Main Gas in atmosphere, due to Carbon Dioxide absorbed into Weak Acids when Water Vapour condensed into Oceans
4
Q
Oxygen
A
- Not much Oxygen was needed until Photosynthesising Organisms (Algae) occured in the Oceans, giving out Oxygen and taking in Carbon Dioxide
- Oxygen increased as Plants evolved
5
Q
Fossil Fuels
A
- Formed over million years and are non-renewable, some Carbon Dioxide (used in Photosynthesis) is used to create them
- Contains some Sulfer
6
Q
Coal
A
- Made from Trees in Wetlands (as they dont decompose) due to lack of Oxygen or Acidic Conditions
- Compressed with Sediment Rock, high temperature and pressure creates Coal
7
Q
Crude Oil
A
- Made from dead Planktons that don’t decompose due to no Oxygen on the Sea bed
- Compressed by Sediment, heat and pressure creating Oil
8
Q
Green House Effect
A
Process where Gas in Earth’s atmosphere traps heat from the sun to keep civilization warm/alive
9
Q
Climate Change
A
- Amount of Carbon Dioxide increasing in atmosphere
- Burning Fossil Fuels, releasing Carbon Dioxide
- Deforestation, less trees means less Carbon Dioxide taken in
10
Q
Climate Change Effects
A
- Increasing Temperature could lead to melting of Glaciers increasing sea levels leading to more flooding
- More frequent Extreme Weather: Flash Floods, Storms
- May kill out an entire species
11
Q
Green House Gases
A
Cardon Dioxide - Burning Fossil Fuels
Methane - Agriculture, Cattle
12
Q
Carbon Footprint
A
How much Green House Gases something emits over its duration
13
Q
Reducing Carbon Dioxide Emissions
A
- Insulating our homes more
- Use less heating/electricity which uses Fossil Fuels
- Use public transport/walk instead of using cars
14
Q
Renewable Energy
A
- Doesn’t get finished up and is more eco-friendly
- Much more expensive, may be less efficient that Fossil Fuels
15
Q
Reducing Methan Emissions
A
- Eat less dairy/meat products
- Landfills can be burnt to trap Methane to produce Electricity