Journey to the Universe: Lesson Plans and Activities
Making Craters (DRY MIX) http://teachers.greenville.k12.sc.us/sites/mdacko/Pages/DRY%20MIX%20and%20Graphing.aspx
The circular features so obvious on the Moon’s surface are impact craters formed when impactors smashed into the surface. The explosion and excavation of materials at the impacted site created piles of rock (called ejecta) around the circular hole as well as bright streaks of target material (called rays) thrown for great distances.
http://www.nasa.gov/pdf/180572main_ETM.Impact.Craters.pdf
http://www.teach-nology.com/teachers/lesson_plans/science/68moon.html
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