topic 9 - chemirsty of the atmosphere

• lots of volcanic activity which released nitrogen, water vapour, methane and ammonia • basically no oxygen

• water vapour condenses to form oceans • carbon dioxide dissolved into oceans which reacted and formed sediments and seabeds • green plants and algae appeared and did photosynthesis - animals

• deposits of plankton

• 80% nitrogen • 20% oxygen • 1>% other gases

• co2 • methane • water vapour

• short wave length radiation from sun goes through the atmosphere and hits earth. • earth absorbs some but reflects most back out whihc then hits particles in the atmosphere and get remmitted in random directions - this is what keeps our earth warm

• deforestation - less photosynthesis • argriculture - more methane • burning fossil fuels

• rise in sea levels - flooding • changes in rainfall patterns • increased frequency of tropical storms • less biodiveristy

• renewable energy or nuclear (instead of fossil) • more efficient processes in manufacturing. • government tax companies or set laws • carbon capture - stores carbon far underground

not enough oxygen - particulates of soot and carbon monoxie

• inhaled can get stuck in lungs and cause respiratory problems • global dimming

• binds to haemoglobin in blood and reduces the amount of blood that gets around the body - DEATH • no co,our or smell so hard to detect

during combustion

• reaction between nitrogen and oxygen in the air cause by very high temps (happens inside car engines)

• clouds of dilute sulfuric or nitric acid which falls as ACID RAIN

co2 * volcanic activity released water vapour * the water vapour condensed to form oceans * carbon dioxide dissolved in oceans * carbonates produce sediments * carbon locked up in sedimentary rocks * carbon locked up in fossil fuels water * algae and plants evolved / appeared * algae / plants absorbed carbon dioxide * by photosynthesis * which also released oxygen