UNI101Y1 Chapter Notes - Chapter 4: Northern Hemisphere
16 Feb 2013
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Document Summary
The physical environment varies widely over the surface of the earth. Due to differences in temperature, light, substratum, moisture, salinity, soil nutrients. Climate zones are determined by solar radiation patterns and the redistribution of heat and moisture by wind and water currents. Within climate zones, topography and bedrock composition further differentiate the environment. Climatic patterns are determined by the intensity of sunlight falling on the earth"s surface, and the different surfaces (which absorb sunlight differently) Although many variations occur, there are also patterns in climate (due to the intensity of sunlight) The sun warms the atmosphere, ocean, and land most when it lies directly overhead. Sunlight is spread over a greater area when the sun approaches the horizon (i. e. at higher altitudes) it also travels through a longer path (where most of its energy is reflected or absorbed) Strikes the earth at a lower angle.
