Final answer:
Earth's atmosphere causes most objects to burn up before they reach the Earth's surface, preventing many large impacts seen on the Moon.
Step-by-step explanation:
The reason Earth's surface is rarely impacted by large objects that enter Earth's atmosphere, unlike the Moon, is because Earth's atmosphere causes most objects to burn up before they reach the surface. The atmosphere is effective at protecting the Earth from smaller objects, which we see as meteors or shooting stars. However, it is important to note that while this atmospheric shield can burn up small pieces of cosmic debris, it does not protect against the large impacts that form craters several kilometers in diameter which are common on the Moon.