Evolution of the atmospher

Question 1

what was water vapour and nitrogen produced through

Answer 1

volcanic eruptions

Question 2

why have levels of co2 decreased

Answer 2

• locked up in sedimentary rocks and fossil fuels
• absorbed by plants during photosynthesis
• dissolved in oceans

Question 3

how to reduce emissions of co2

Answer 3

stop burning fossil fuels as the carbon fuels are released as co2

Question 4

how to reduce emissions of methane

Answer 4

recycle as landfill sites release methane from decomposition

Question 5

how did levels of o2 rise

Answer 5

more plants evolved therefore, during photosynthesis, oxygen was released as a by product.

carbon dioxide+water–>oxygen+glucose

Question 6

list the three greenhouse gases

Answer 6

carbon dioxide, methane, water vapour

Question 7

effects of sulphur dioxide on atmosphere

Answer 7

causes sulphuric acid rain which can kill plants and damage buildings and statues-makes metal corrode. cause respiratory problems if breathed in.

Question 8

Describe the greenhouse effect.

Answer 8

• energy from the sun travels to the earth as SHORT WAVELENGTH RADIATION.
• some short wavelength radiation reflects back into space, this is because short wavelength radiation doesn’t react strongly with the gas molecules.
• the energy of the radiation is absorbed when it reaches the earths surface.
• the surface of the earth radiates the energy as long wavelength radiation.
• energy in the long wavelength radiation is absorbed by the greenhouse gases.
• temp of atmosphere rises.

Question 9

effects of nitrogen oxide on atmosphere

Answer 9

caused nitric acid rain that damages plants, it is also dangerous if breathed in/

Question 10

effects of carbon particulates

Answer 10

get stuck in lungs cause damage. reflect sunlight back into space which cause global dimming.