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Physical Geography. Human Geography. The Solar System. Earth’s orbit and rotation. Solstices and equinox. Rotation, orbit and its consequences. Geographic coordinates. Earth’s layers. Mantle convection. Continental drift. Three types of plate boundary. Geologic time scale.
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Continental drift Three types of plate boundary.
Geologic time scale http://en.wikipedia.org/wiki/Geologic_time_scale http://www.slideshare.net/isaacbuzo/historia-geologica The largest defined unit of time is the supereon, composed of eons. Eons are divided into eras, which are in turn divided into periods, epochs and ages.