Climate change and global warming

greenhouse effect steps

-some electromagnetic radiation from the sun passes through earths atmosphere(infrared, visible light and UV radiation)

-the earth absorbs some radiation and warms up. But some heat is radiated from the earth as infrared radiation

-some of this IR radiation is absorbed by greenhouse gases in the atmosphere and they re-emit it in all directions

-atmosphere warms up leading to greenhouse effect and global warming

Carbon dioxide contribution to global warming

-burning loads of fossil fuels

-chopping down loads of trees, less photosynthesis

Methane contribution to global warming

-farm animals produce methane during digestion

-huge amounts of waste release methane as it decomposes

evidence of global warming

-have records going back hundreds of years which show the steady increase

impacts of climate change

melting ice caps

rising sea levels

more intense extreme weather like drought

crop difficulty growing

destruction of habitats

how to reduce co2 emissions

decreasing emissions from cars-public transport

decreasing emissions from fossil fuel power stations-reduce electricity use and generate alternative electricity generation

how to reduce methane emissions

decrease emissions from landfill-encourage composting

de erase emissions from farming-reduce farm animals

Climate change

-a change in global or regional climate patterns

-the effects of global warming

One order of magnitude

x10