32. It’s the expanding vapor , not the impact, that forms the crater. That’s why craters are round, even if the meteorite impacts from a low angle.
33. Crater rims are raised above the surroundings. Rebound of the rock under the impact can form a central peak. Over time, the crater walls can slump, creating terraces.
34.
35. Some craters have rays, or a blanket of material thrown out by the impact.
36. What do the rays indicate about the age of the crater and the energy of the impact?