Http:// EARTH’S ROTATION AND REVOLUTION.

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

SeasonsThe diagram shows how Earth moves during the year.

EARTH’S SEASONS

EARTH’S SEASONS

SUMMER

WINTER

http://www.cyberphysics.co.uk/graphics/animations/Flash/LengthofDay.swf

EARTH’S SEASONS

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

EARTH’S SEASONS

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

Moon PhasesAs the moon orbits Earth, its sunlit side is seen from different angles.

MOON’S PHASES

MOON’S PHASES

Solar EclipseThe diagram shows the moon’s penumbra and umbra during an eclipse.

SOLAR ECLIPSES

Lunar EclipseAs the moon moves through Earth’s shadow, total and partial eclipses occur.

LUNAR ECLIPSES

Tide CycleTides are caused mainly by differences in how much gravity from the moon and the sun pulls on different parts of Earth.

Tides