Question

1. the most widely accepted model for the origin of the moon involves

a. the formation of the moon from dust and gas when earth formed.
b. a large body hitting earth and ejecting debris that became the moon.
c. the capture of the moon from mars by earth.
d. a large body hitting mars and splitting off debris that became the moon.

1. which of the following lunar features is the oldest?

a. surface regolith
b. highlands
c. craters with rays
d. maria basins

Explanation:

1. The giant - impact hypothesis, which states that a large body (Theia) hit Earth and ejected debris that accreted to form the moon, is the most widely - accepted model for the moon's origin.
2. The lunar highlands are the oldest lunar features. They are composed of rocks that formed early in the moon's history, while other features like maria basins, craters with rays, and surface regolith formed later due to impacts and volcanic activity.

Answer:

1. B. a large body hitting Earth and ejecting debris that became the moon.
2. B. highlands