Comets
Meteoroids are little chunks of rock and debris in space which eventually become meteors.
They are referred to as asteroids.
scree/talus
sedimentary
Depending on what the debris is it may either form coal, oil, or natural gas.
Space pollution is the collection of defunct objects in the space around Earth. It includes everything that can be considered debris, from old satellites, spent rocket stages and rock fragments from erosion and collision.
Meteoroids are little chunks of rock and debris in space which eventually become meteors.
That the moon is roughly 4 billion years old and was likely originally part of the Earth, with debris from Earth having been blown into space after a collision with a massive, Mars-sized proto planet and eventually coalescing into our moon.
Absolutely not. The Sun is not a meteoroid, it is a star. A meteoroid is a chunk of rock and debris travelling through space.
They are referred to as asteroids.
If you are looking for the crossword puzzle answer, another name for fallen rock debris is scree.
The speed of sound, it is different in different substances, but it is roughly equal to the speed of sound in rock.
landslide, rock slide, debris slide
a meteor is a peace of rock or other debris from outer space that burns up as it enters earth's atmosphere
Gravel.
scree/talus
Asteroids are nothing but debris found in space. Rock broken off from various places like other planets, other planet's moons, our moon etc.