chapter 10 Flashcards
1
Q
- The Moon is unique in that A) it keeps one face towards its planet. B) it orbits near its planet’s orbital plane
A
B) it orbit’s near its planets orbital plane
2
Q
- Would you expect there to be about as much maria on the farside of the Moon as the nearside? Why isn’t there?
A
yes-nearside has thinner crust
3
Q
- Just prior to the Apollo missions which was thought to be older: lunar maria or terrae? Based on what?
A
terrae because it has more craters
4
Q
- Which is probably older: a young maria basalt or an old oceanic basalt? Based on what?
A
young maria because of actual age and plate techtonics
5
Q
- Which would you expect to have taller mountains? E or M?
A
Earth
6
Q
- Which has the larger range (deepest to highest): Earth or the Moon? For the Moon it’s 18 km. Mt Everest is almost 9 km above sea level and Marianas Trench is 11 km deep.
A
Earth
7
Q
- Which has the larger range (deepest to highest): Earth or the Moon? For the Moon it’s 18 km. Mt Everest is almost 9 km above sea level and Marianas Trench is 11 km deep.
A
less stuff to hit
8
Q
- How do they explain the intermediate peak at about 3.9 billion years ago?
A
jupiter and saturn changed orbit
9
Q
- How was the concern about landing on the regolith resolved?
A
the moons surface might act like quick sand so they sent a robot
10
Q
- How much more should tidal effects have been on the Moon when it was twice as close? (Hint: tidal effects fall off with d^3).
A
8x bigger
11
Q
- What’s the magnetic evidence that the Moon had a liquid interior billions of years ago but doesn’t now?
A
rocks on the earth shows the effect of a magnetic influence.
12
Q
- What is the origin of the Moon? A) Daughter (i.e. it formed out of the Earth). B) Sister (i.e. it formed by itself near Earth). C) Spouse (i.e. it formed elsewhere and was later captured). D) None of the above.
A
none of the above
13
Q
- Which of the following is the remaining devastation from the impact which ended up forming the Moon? A) The Atlantic Basin. B) The Caribbean. C) The Pacific Basin. D) The Sahara Desert. E) None of the above.
A
None of the above
