GEOG 1220 Lecture : Week #3 Lecture g.docx
2 Apr 2013
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Document Summary
The physical spheres and life: atmosphere: air, hydrosphere: water, lithosphere: ground beneath us. This is the essence of human impact on the environment. Energy: solar energy (exogenous) from outside, geothermal energy (endogenous) from within. Heat comes into the earth (only 65%), it is then converted to heat which makes winds, currents, etc. *differences in flora and fauna reflect how much energy is in one spot (i. e. rainforest, desert) Critical components of the atmosphere: carbon dioxide (co2, ozone (o3, water vapour (h2o, condensation nuclei (ex: dust, pollen, ice crystals) Heat energy courses a reduction in the density of the air to the heat rises. Day and night have opposite circulatory systems (day = sea breezes, night = land breezes) Cities are warmer than the country side and they also have more rain because the warm air condenses after it rises. Cities are less humid because there"s less water to evaporate they also have less wind.
