Most meteorites, when we see them in the night sky, come in at an angle. Rarely do we see them come straight down from above.
This mean that such bodies would leave oblong craters if they were to strike the crust of our planet.
However, all impact craters are circular. There is not a single oblong impact crater on our planet, nor is there any such crater on the Moon.
This suggests strongly that all meteorites explode before they hit ground. Only tiny objects can make it all the way to ground without exploding.
This is true on Earth, on the Moon, and everywhere else in our solar system. Since there is no atmosphere on the Moon, we must assume that these explosions are electrical in nature.