Although there is no official dividing line, a chunk of rock orbiting the Sun is generally considered an asteroid rather than a meteoroid if it:
A)is larger than 1 cm across.
B)is larger than 1 m across.
C)is larger than 2 km across.
D)has a mass larger than 1% the mass of Earth.

Question

Quizplus · Accepted Answer

According to the International Astronomical Union, an asteroid is any object in our solar system that is larger than 1 meter across, while a meteoroid is smaller than 1 meter across. Therefore, an object that is larger than 1 m is considered an asteroid, making choice B the correct answer.

Although There Is No Official Dividing Line, a Chunk of Rock