ERS103H5 Study Guide - Final Guide: Alluvium, Milankovitch Cycles, Supercontinent
17 Dec 2012
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Energy: simply the capacity to do work, to cause something to happen, or to cause change in a system. Resource: we refer to any material that can be of use, either to make something or to provide energy as a resource. Energy resource: something that can be used to produce work; in a geological context, a material (such as oil, coal, wind, flowing water) that can be used to produce energy. Mineral resource: the minerals extracted from the earth"s upper crust for practical purposes. * humans obtain energy from a variety of sources. Some are physical (such as solar radiation and gravity), whereas others are biological (involving plant growth): Energy directly from the sun (solar panels and water heating) Energy directly from gravity (movement of water powers turbines) Energy involving both solar energy and gravity (wind powers sails and windmills. Energy via photosynthesis (burning plant mass to create energy, like plant material to create ethanol.
