Materials List: Earth Impact

Each group needs:

  • 1 plastic container, ~2 ft2 x 2-5 inches high
  • enough sand to fill the entire container, to at least 1.5 inches
  • 4 different-sized, spherical-shaped rocks of equal density
  • 12-inch ruler
  • meter or yard stick
  • 1 sheet of blank paper (or, use the reverse side of the worksheet if it is copied single sided)
  • How Big is That Crater? Worksheet