Meteors made of iron withstand the stress better than those of stone. Even an iron meteor will usually break up as the atmosphere becomes more dense, around 5 to 7 miles up. A meteor sometimes explodes above the surface, causing widespread damage from the blast and ensuing fire. This happened in 1908 over over Siberia. Craters on Earth form much as they would on the moon or any rocky planet.
Smaller objects create simple, bowl-shaped craters.
The largest impacts form basins in which multiple rebounds form several inner peaks.