Question

What is the difference between meteoroids, meteors, and meteorites?

Answer 1

Meteoroids are rocks that float around the sun in the sky.  They are orbiting.  Meteors fall into Earth's atmosphere but immediately burn up.  They are the shooting stars that you see.  Meteorites are rock that hit the surface.  They cause craters and could possibly harm people.  Despite common misconceptions, meteorites are not hot.  In fact, some have frost on them.

Answer 2

Meteoroid . . .
the stones, pebbles, rocks and grains of sand, still in space, following
the solar orbit of the comet from which they most likely broke off;

Meteor . . .
the flash or streak of light we see in the sky, when the Earth comes
along and crosses the orbit of one or more meteoroids; when that
happens, the meteoroids enter Earth's atmosphere, and they get heated
to incandescence by friction with the air. Most burn up completely.

Meteorite . . .
When a meteoroid is so big that it's not completely vaporized during
its fall through the air, there may be something left of it to fall to the
ground. That piece that remains is a meteorite.