What is the source of the fine, powdery dust found on the Moon's surface?
A) it is sand, produced in exactly the same way sand is produced on the Earth's beaches
B) it is the result of volcanic activity on the Moon over billions of years
C) it is the result of many impacts, breaking surface rocks apart over billions of years
D) it is the result of gas bubbling up from inside the Moon, which chemically changes the surface soil
E) even though the astronauts brought home lots of samples of Moon dust, we have no idea why there is such a layer on the Moon's surface

Question

Quizplus · Accepted Answer

The fine, powdery dust found on the Moon's surface is the result of many impacts over billions of years, breaking surface rocks apart. This process is known as "lunar regolith."

What Is the Source of the Fine, Powdery Dust Found