Astronomy Exam
Third Quarter, Academic
Dr Jamie Love
1997 - 2011
Hello and welcome to your exam. This will test your knowledge of the materials covered in lessons 25 to 36 (the Third Quarter) of this course.
Self Evaluation Test - Pretest info
When you choose an answer you will get a "pop-up" response indicating whether you got it right or wrong and provides feedback. This immediate feedback is a learning tool so read each reply carefully. I suggest that the first time you take the test, you simply stick with your original answers, complete the test and submit it for a grade. This will give you an idea of what you have learned so far and is more like a "regular" test. (Whatever that is. ) Your answers will be graded and each one will be scored Correct or Wrong. Once you have the score and the list of incorrect answers you can use your "Back Button" to return to your exam and correct your errors. This second time with the exam you can carefully read each response, learn from it and choose the right answer – then submit your perfect score for a final grade.
Self Evaluation Test
Choose the best answer by selecting one of the buttons. When you get to the bottom of the page, submit your answers.
1 : For a solar eclipse to occur the Moon’s ______________________ must match that of the Sun’s.
apogee and perigee
declination and right ascension
umbra and penumbra
barycenter
2 : A lunar eclipse occurs when the Moon is ...
full.
at a node.
crossing the ecliptic.
all the above.
3 : For a lunar eclipse to occur the Moon’s RA must be ________ that of the Sun’s and both their declinations must be ___________.
parallel to, at inferior conjunction
identical to, identical
opposite (-12hrs), identical
opposite (-12hrs), opposite (-180o)
4 : A Saros cycle repeats ...
when the Draconic and synodic months overlap.
every 223 synodic months (or 242 Draconic months).
18 years, 11 days, and 8 hours (if that time includes five leap years it will be 18 years, 10 days, and 8 hours).
All the above are true.
5 : The third brightest star in a multi-star system is called ...
tristar.
C.
third.
triple prime.
6 : A Type I supernova ...
has no (or very little) hydrogen in its spectrum.
has lots of hydrogen in its spectrum.
can reoccur.
is the fate of our Sun.
7 : Objects in the Oort Cloud ...
are the source of short period comets.
are the source of long period comets.
are slightly beyond Pluto’s orbit.
were formed from the accretion disk.
8 : The gas-ion tail of a comet ...
is visible no matter how far away the comet is from the Sun.
is made mainly of dust and rocks of silicates.
is yellowish and arcs as a gently feathery curve.
is bluish and points straight back away from the Sun.
9 : A meteor is a piece of material ...
before it enters the Earth's atmosphere.
traveling through the Earth's atmosphere.
remains and survives to the Earth's surface.
from the Kuiper Belt.
10 : Your chances of seeing a meteor are increased ...
if you look towards the expected (predicted) radiant.
after local midnight.
when the Earth passes through a comet's tail or the debris ring left by a long dead comet.
All the above.
11: Which of these asteroids cross the orbit of the Earth?
Trojans.
Apollo.
Aten.
Amor.
12 : Panspermia is the idea that ...
life originated elsewhere and then traveled here to Earth.
life has only evolved on Earth.
all meteoroids come from the Asteroid Belt.
there is only one galaxy.
13 : Axial inclination is the amount of tilt the planet has with respect to ...
the Sun.
the Earth's orbital plane.
its (the planet's) orbital plane.
the galactic plane.
14: Saturn's rings are parallel to Saturn's ...
orbital plane.
rotational axis.
equatorial plane.
axial inclination.
15 : If you were at the latitude of 20 degrees north on the day of the Summer Solstice, what would be the Sun's altitude (elevation) above the southern horizon when it crosses your meridian?
93.5 degrees from the southern horizon.
90 degrees from the southern horizon.
23.5 degrees from the southern horizon.
20 degrees from the southern horizon.
16 : If you live in the Northern Hemisphere, when would be the best time to view an inferior planet after sunset?
Winter Solstice.
Vernal Equinox.
Summer Solstice.
Autumnal Equinox.
17 : Our galactic plane is visible as the ...
Northern Lights.
Milky Way.
ecliptic.
Celestial Equator.
18 : The center of the Milky Way Galaxy is in the direction of ...
Polaris.
between Böötes and LEO.
CYNGUS.
SAGITTARIUS.
19 : The Local Group ...
are the asteroids that cross the Earth's path.
are our local galaxies that are locked together by mutual gravitational forces.
includes about 30 nearby galaxies but not the Milky Way Galaxy.
None of the above.
20 : On a clear night, from somewhere on Earth, with the naked eye you can see ...
the Milky Way.
the Andromeda Galaxy.
the Clouds of Magellan.
All the above.
You can now submit your exam to for grading. If your answers were less than perfect you will receive a score and a list of Incorrect (and Correct) replies. Then you can use your "Back Button" to return to this page and correct your earlier errors. Once you have corrected all your earlier errors (by rechoosing a correct answer when you were told you are wrong), you will get a perfect score.
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