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Using an animation of the classic pendulum experiment, this resource supplies middle and high school students with evidence of the Earth's rotation on its axis. The introduction explains that although pendulums are known to swing in a fixed path, on Earth their path appears to shift over time. As the animation reveals, it is not the pendulum's swing that changes--it is the Earth beneath the pendulum that moves. The animation contains three screens: two with different views of a pendulum swinging above the North Pole and one with a tracing of the pendulum's path. Control buttons allow students to play, pause, and step through the animation. Copyright 2005 Eisenhower National Clearinghouse
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