Question

question 18 of 28
how was earths moon formed?
a. one of jupiters moons was caught by earths gravity.
b. venus was split by an asteroid bombardment.
c. dust came together following a volcano on earth.
d. earth was struck by a mars - sized body.

Explanation:

The leading theory for the moon's formation is the giant - impact hypothesis. A Mars - sized body, often called Theia, collided with Earth early in the solar system's history. Debris from this impact accreted to form the moon. Option A is incorrect as there is no evidence of Jupiter's moon being captured by Earth's gravity to form our moon. Option B is wrong because Venus has nothing to do with the moon's formation. Option C is also incorrect as volcanic activity on Earth is not responsible for the moon's origin.

Answer:

D. Earth was struck by a Mars - sized body.