Materials List:
Building & Testing Model Underground Safety Caverns
https://www.teachengineering.org/activities/view/csm_lesson8_activity1_tg
- 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
https://www.teachengineering.org/activities/view/csm_lesson8_activity1_tg