9. Chemistry Of The Atmosphere

78%

21%

0.03%

intense volcanic activity which produced loads of CO2, water vapour, nitrogen and some methane as water vapour condensed into liquid it formed oceans lots of CO2 was absorbed –> became carbonate precipitates –> sediment in the sea bed

2.7 billion years ago Green plants and algae were able to photosynthesise to absorb CO2 and produce O2 –> co2 slowly declined + o2 slowly built up = more complex life when algae + plants died they fell to sea bed and were buried in layers of sediment –> mil yrs sediment = compressed to = sedimentary rock, oil and gas , traps CO2

• Solar radiation from the Sun reaches the Earth through the atmosphere. • Some energy is reflected back into space, while the rest is absorbed by the Earth’s surface. 3.The Earth then re-emits heat energy toward space. • Greenhouse gases (like CO₂, CH₄, H₂O) absorb and re-emit much of this heat energy. • This repeated absorption and re-emission traps heat in the atmosphere. The result is a warmer and more stable climate — known as the greenhouse effect.

total amount of co2, and other greenhouse gases, emitted over somethings entire life

Walk, eat less meat, use less electricity, renewable energy, more efficient manufacturing processes

burning fossil fuels deforestation agriculture - methane waste releases methane as its decomposed by organisms

• CO2 • Methane -> 2nd most abundant - produced by cows and sheep • Nitrous oxide -> 3rd and produced by soil which is used more containing bacteria

climate change : sea levels rise droughts, floods,hurricanes = more common + severs some species may not be able to adapt or migrate fast enough = biodiversity decrease

hydrocarbon + oxygen –> carbon dioxide + water

Yes

Carbon monoxide and particulates (soot)

if inhaled = respiratory problems creates smog which reflects sunlight back into space = global dimming

if we breathe it in … it diffuses into our blood and binds to haemoglobin = less 02 transported around the body = fainting, coma, death

Water vapour, carbon dioxide, carbon monoxide and sulfer dioxide, nitrogen dioxide

when we breath in = respiratory problems when mix with clouds = dilute acid = acid rain –> damage buildings + statues, corrode metals, make soil acidic = damaged plants

It is toxic and has no smell