Virtual Courseware
Earthquake-learn how to locate the epicenter and determine the Richter magnitude of an earthquake at http://www.sciencecourseware.org/eec/Earthquake/
Seasons on Earth-causes of seasons and its relationship to how much of the Sun's energy reaches the Earth at http://www.sciencecourseware.org/eec/GlobalWarming/Tutorials/Seasons/
Milankovitch Cycles-variations in the Earth's tilt and orbit and how they long term variations in climate at http://www.sciencecourseware.org/eec/GlobalWarming/Tutorials/Milankovitch/
Virtual Dating: Isochron-how to determine the ages of rocks and minerals at http://www.sciencecourseware.org/VirtualDating/files/1.0_ClocksInRocks.html
Virtual Dating: Radiocarbon-how to determine the ages of organic materials at http://www.sciencecourseware.org/VirtualDating/files/RC0/RC_0.html
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