Exam 9: The Moon

Consider the following hypothetical situation.A spacecraft lands on a moon of one of the planets.The moon has a smooth surface resembling that of the lunar maria.The rocks on the surface are found to be 4.5 billion years old.Why would such a finding be highly unusual?

The Moon always faces the Earth because of

Why are rocks from lunar uplands (terrae)older that those from the lunar maria?

At what phase of the Moon can a lunar eclipse occur?

At which phase of the Moon do lunar eclipses occur?

A total lunar eclipse occurs when the Moon enters the Earth's

What effect do lunar tides have on the length of the day?

If the Moon did not rotate on its own axis,we would observe

How can craters tell us about the ages of surface regions of planets?

The analysis of samples returned from the Moon provided a means to estimate the ages of the surfaces of various planets and satellites because the samples made it possible to determine the relationship between age and

What kind of eclipse occurs when the Moon's penumbral shadow comes in contact with the surface of the Earth?

Lunar maria are darker and less heavily cratered than lunar terrae.From this information,what can be concluded about the maria and terrae?

Which of the following is unaffected by the tidal interaction between the Earth and the Moon?

Which of the following is a valid criticism of the fission theory of the origin of the Moon?

The lunar maria were formed by

Compared to the lunar uplands (the terrae),the lunar maria are

One hemisphere of a newly discovered satellite is much more heavily cratered than the other hemisphere.What can be said of the more heavily cratered side of the satellite?

If a lunar eclipse occurs tonight,when is the soonest that another lunar eclipse can occur?

The light-colored highland regions of the Moon's surface are

What kind of eclipse will be seen by an observer located directly behind the umbral shadow of the Moon?