Most meteors that fall into the Earth's atmosphere burn up before reaching the ground. Why is this?
A. The sound waves are building up in front of the meteorite because
of its speed, and these vibrations shake the meteor apart.
O B. They are hitting air molecules at a high speed and breaking them
apart, which produces a lot of heat.
C. The meteorites create sonic booms that cause them to implode.
D. They are usually hit by lasers from defense flights.

B

Explanation:

it is B

Explanation: when the meteors hit the airs surface they are traveling in a pressurized air surface at a certain velocity that is making them break apart thus the meteors that are in earths surface usually disintegrate because of the pressurized molecules that are resisting them, typically meteors roam through empty space to here no molecules resist them so when the molecules in earth surface get hit by the pressure of a meteor the molecules ionize creating a huge friction force that ignites the meteor

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.