Question

Which terms describe space objects that are small chunks of rock and debris that are smaller than 1 km?

Answer 1

terms describe space objects that are small chunks of rock and debris that are smaller than 1 km

meteoroids. asteroids. meteors

Answer 2

Rocks having diameter less than 1 km in space and known as asteroids. This  asteroids when come near a planets gravitational pull falls down on the planet as meteors. While they fall they can be a single one or more than one. Multiple meteors falling from the sky are called meteor shower. Smaller rocks are called meteorites. They cause a huge damage if they fall on for a large area or if the size of the meteor is large.