http:// earth’s rotation and revolution
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http://www.f-lohmueller.de/pov_tut/animate/im/planet_01ani.gif
EARTH’S ROTATION AND REVOLUTION
Sunlight on EarthThe diagram shows how Earth’s tilted axis affects the strength of sunlight in different places.
EARTH’S SEASONS
EARTH’S SEASONS
SUMMER
WINTER
http://www.cyberphysics.co.uk/graphics/animations/Flash/LengthofDay.swf
Solstices and EquinoxesThe diagrams show the apparent path of the sun at the solstices and equinoxes in the Northern Hemisphere. What is the sun’s path at the equinoxes and the December solstice for the Southern Hemisphere?
EARTH’S SEASONS
Seasons Interactive Display
The Moon’s Motion
MOON’S PHASES
http://highered.mcgraw-hill.com/olcweb/cgi/pluginpop.cgi?it=swf::800::600::/sites/dl/free/007299181x/78778/Lunar_Nav.swf::Lunar%20Phases%20Interactive
Lunar EclipseAs the moon moves through Earth’s shadow, total and partial eclipses occur.
LUNAR ECLIPSES