Materials List: Building & Testing Model Underground Safety Caverns

  • papier-mâché or clay (not modeling clay)
  • medium-sized balloons
  • small cardboard boxes
  • large plastic tubs
  • sand
  • small bowling ball, or other ~5 -to 7-pound object, to simulate an asteroid
  • assorted additional materials that could be used to form model cavern structures, such as cleaned containers found in the recycling bin
  • (optional) photographs of real impact craters on the Earth and the Moon