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In this activity, students consider the sudden release of a tremendous amount of kinetic energy when an extraterrestrial object strikes the Earth. In small groups, they study satellite images that show possible evidence of impact events. To... (View More)

In this inquiry investigation, students learn that while the Sun appears to move around the Earth, in fact it is the Earth spinning around on its axis while the Sun remains stationary. Materials suggested for this activity include an easel or wipe... (View More)