Video showing a Foucault Pendulum making its rounds throughout a couple of days. Notice how the shadows change during the video becasue of the sun's position in the sky. As the Earth spins counterclockwise those shadows change locations.
Earth Rotation and the coriolis effect
More on the Seasons - Earth Revolving
Earth's place as it orbits the Sun - How does this affect our seasons? What is a Solstice? What is an Equinox?