Exam 3: Eclipses and the Motion of the Moon

In a period of 1 month, the Moon moves across the sky:

How does the Moon rotate to keep one face pointed toward Earth at all times, as can be seen in Figure 3-4 of Universe, 11th ed.? ​ ​

If the Moon is now in its waxing crescent phase, 1 week ago it was:

Suppose the Moon orbited Earth with the same period it has now but in the opposite direction. Which one of the following would NOT change?

The approximate rotation period of the Moon is:

What is the right ascension of the Moon?

Eratosthenes, an astronomer in ancient Greece, measured the radius of Earth by making observations of:

If astronauts landed on the Moon near the center of the visible surface at full moon, how many Earth days would pass before the astronauts would experience darkness on the Moon?

If you were standing on the Moon in darkness on the opposite side from Earth at a particular time, which of the following conditions would be true?

Which way will the "horns," or sharp ends of the crescent, of the Moon point in the sky when the Moon is above the western horizon at sunset, at a phase 3 days after new moon? (Hint: Think about what causes the crescent phase of the Moon; Figure 3-2 of Universe, 11th ed., may help.) ​ ​

Which of the following statements about the Moon's position and motion is NOT correct?

If an observer on Earth sees the Moon to be full, then at the same time an observer on the Moon would see Earth to be at what phase?

If an observer on Earth sees the Moon to be at first quarter, then at the same time, an observer on the Moon would observe Earth to be at what phase?

One eclipse year is the time needed for:

The attempt by Aristarchus to measure the relative distances to the Sun and to the Moon from Earth produced a result now known to be incorrect. The source of this error was that:

During a total solar eclipse the Moon just covers the Sun as viewed from Earth. If you know both the diameter and distance of the Moon, what else can you determine from this information?

Suppose Eratosthenes had measured the length of a shadow at Syene and then compared it with the shadow measured not at Alexandria, but at a location half way between Syene and Alexandria-both measurements being made at the summer solstice. What would he have found?

What is the declination of the Moon?

One day from sunrise to sunrise for a space explorer at her lunar base will be how many Earth days long? (A diagram might help.)

The time interval between one total solar eclipse and the next total solar eclipse, visible from the same location on Earth, must be all of the following EXCEPT ONE. Which is the EXCEPTION?