In which case(s) can the Earth, Sun, and Moon be in a straight line, as seen from above the solar system? 1. full Moon only 2. first quarter and third (or last) quarter 3. new Moon only 4. both full and new Moon 5. This can happen at any phase of the Moon.

An Assessment

• Best procedures: read quietly to yourself (so you don’t give any subconscious clues)

• As the instructor, we read it too, for timing, then ask if anyone needs more time

• If not, it’s time to vote simultaneously—use your fingers, right in front of your chest so others don’t see (anonymously)

If the Moon was third quarter last Saturday as seen from Texas, what phase will it be this Saturday as seen from China?

1. waning crescent 2. waxing gibbous 3. at or very near first quarter 4. at or very near new 5. any of the above, depending upon other

factors.

Which motions cause the Moon’s phases?

a) Earth’s rotation on its axis.b) Earth’s orbit around the Sun.c) The Moon’s rotation on its axis.d) The Moon’s orbit around the Earth.

1. a and c2. a, b, and d3. b and d4. c and d5. d