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Size, Mass, Area, and Volume
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In this activity (page 23 of PDF), learners conduct an experiment to determine how the size and mass of a projectile affects the area and the volume of an impact crater.

Scale Models
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In this activity, learners explore the relative sizes and distances of objects in the solar system.

Meteoroids and the Craters They Make
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In this activity, learners investigate the formation of craters. Learners will examine how the size, angle and speed of a meteorite's impact affects the properties of craters.

Using Different Models of Earth
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In this activity, learners explore how the shapes, sizes, and distances of land masses appear differently on two different models of Earth: an icosahedron and a flat map.