Midterm Review: The Moon Flashcards
1
Q
Why does the Moon have no atmosphere?
A
It’s gravitational field is too weak to maintain one
1
Q
How are craters formed?
A
By the impact of a meteorite, volcanic activity, and/or explosion
2
Q
What are Maria? How are they found?
A
Large, dark, basaltic plains formed by impact of asteroid-sized bodies
3
Q
How was the Moon created?
A
Earth was hit by a meteorite, and the debris formed the Moon
4
Q
How do we know the Moon has a small iron core?
A
Re-analysis of old Apollo seismic data on deep moonquakes
5
Q
Why is the Moon covered in impact craters?
A
Because there’s no erosion to fix craters
6
Q
A
