In this activity, marbles or other spheres such as steel shot, ball bearings, golf, or wooden balls are used as impactors dropped from a series of heights onto a prepared “lunar surface.” Using impactors of different mass dropped from the same height will allow students to study the relationship of mass of the impactor to crater size. Dropping impactors from different heights will allow students to study the relationship of velocity of the impactor to crater size. Topics include: craters, impact, impact, and ejecta.

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Type External ResourceStock # ERNASA10_0009

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