ASTR 1210 (O'Connell) PUZZLAH PREP QUESTIONS
PUZZLAH PREP: LECTURE 5
These puzzlah-prep questions relate to topics that might form
the basis of in-class puzzlah questions for a given lecture.
Consider them while reading over the Study Guide and reading
The topics are not guaranteed to be included as puzzlahs, nor
would a puzzlah necessarily be formulated as are the questions
Lecture 5 on Thursday, Sept. 12, will not cover
the material on lunar phases, precession and eclipses (i.e. Sections E,
F, and G of Study Guide 5). However, there will be puzzlah
questions on this material, so you should pay more attention to
the reading assignment than usual. The questions below point out some
of the features that will be covered:
On how many days during the month is the Moon as seen from Earth
exactly half-illuminated by the Sun?
(A) 1; (B) 2; (C) 4; (D) 30 days (i.e. always)
(T/F) On a night when the Moon is "full", it will be seen rising in
the east just as the Sun is setting in the west. [Hint: study
the figure in Sec. E of the Guide.]
(T/F) Polaris is now, and will always be, the "north pole star."
If a total lunar eclipse occurs tonight, how long will it be until
the Moon is seen in the "new" phase?
(A) 1 day; (B) 7 days; (C) 14 days; (D) 30 days.
September 2013 by rwo
Text copyright © 1998-2013 Robert W. O'Connell. All
These notes are intended for the private, noncommercial use of
students enrolled in Astronomy 1210 at the University of Virginia.