APAS 1010
QUIZ #1 ANSWERS
During the fall of 1996, there was a spectacular lunar
eclipse on September 26 and the sun crossed the moon's node on October 1.
As you know, the node moves forward by 20 days every year. The sun will
again be crossing a node of the moon's orbit on March 19, 1997 and there
will be a new moon on March 9.
- What is the range of dates of the eclipse season in the spring of
1997?
15 DAYS ON EITHER SIDE OF MARCH 19
- What is the date of the solar eclipse during the spring?
MARCH 9
- How many days are there between a new moon and a full moon?
14.75 DAYS
- What is the date of the lunar eclipse during the spring?
MARCH 23/24
- When will the eclipse season again occur at the time of
equinox?
TWO SATISFACTORY ANSWERS:
FALL OF 1997
NEXT MAJOR STANDSTILL, 2005
- During the spring of 1997 what is the cycle of the moon: major
standstill, minor standstill, or half-way between major and minor
standstills?
MINOR STANDSILL<
- 19 turns of a spiral petroglyph pecked on a cliff.
FAJADA BUTTE
- an average of 18.5 tick marks of a pictograph painted on a
wall.
CLIFF PALACE
- approximately 18 years between successive construction
episodes.
CHIMNEY ROCK
- What is the radius (distance in degrees from the pole) of the
circumpolar region at Beijing?
40 DEGREES
- With a declination of 61o, Dubhe is the brightest star of Ursa
Major. Would it be a circumpolar star at Beijing or Cairo? Is so,
which?
BOTH: BEIJING AND CAIRO
- Due to precession, Polaris was 14o away from the pole at 0 B. C.;
at what latitude would Polaris not have been a circumpolar star at that
time?
LESS THAN 14 DEGREES
- Vernal equinox.
TAURUS
- Summer solstice.
LEO
- Autumnal equinox.
SCORPIO
- Winter solstice.
AQUARIUS
- What constellation now contains the sun at vernal equinox?
PISCES
- What new constellation will contain the sun at vernal equinox
sometime after A. D. 2000?
AQUARIUS
- As seen from above the north pole of the earth, what direction does
the earth turn?
COUNTER CLOCKWISE
- How slowly would the earth have to turn in order for the moon to
rise in the west and set in the east? Hint: Think of Phobos and Deimos of
Mars.
SLOWER THAN THE SIDEREAL PERIOD OF THE MOON, 27.3 DAYS.
APAS 1010 home page