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AST 101- Exam #1 study guide Questions and Answers with Verified Solutions
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AST 101- Exam #1 study guide Questions and Answers with Verified Solutions
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AST 101- Exam #1 study guide Questions andAnswers with Verified Solutions
If the angle of the Earth's axial tilt were increased from 23° to 30°, what would
change? - ANSWER The days would be longer in July in Tierra del Fuego,
Argentina (latitude 54° S)
The size of the Arctic would increase
The size of the tropics would increase
Syracuse, NY (latitude 42° M) would experience more extreme winters
How much of the Moon's total surface (not just the part we can see) is illuminated
by the Sun during a gibbous moon? - ANSWER Half of it
Which statement correctly describes the motion of the stars in the sky each night?
- ANSWER All of the stars are different distances from us, but all appear to
move together in the same way. This is because they are very far from Earth,
much further away than the distance we move in a year, and their apparent
motion is only because of our own rotation.
If you are standing exactly on the Arctic Circle, you will experience exactly one day
of polar night each year-- a day when the Sun does not rise above the horizon at
all. This day is: - ANSWER The June solstice
Which of the following gives the correct ranking of the distances of the following
objects from Earth, from closest to furthest away? - ANSWER Moon; Sun;
Saturn; Polaris; the center of the Milky Way
, You point your left arm North, and point your arm directly at the North Star. What
is they angle between your two arms?
Syracuse is located at 42° N latitude. The axial tilt of the Earth is about 23°. -
ANSWER 42 degrees
You are traveling through the desert. Since it is so hot during the daytime, you
would prefer to camp during the day an travel at night. However, it is too dark to
travel when the Moon is not visible. Thus, you can only travel when the Moon is
visible, but the Sun is not.
Suppose that the phase of the moon is third quarter- that is, a waning half moon.
Approximately what times will you be able to travel tonight? - ANSWER From
midnight until 6am
Suppose that the Earth did not revolve around the Sun, but simply stayed in one
place and rotated on its axis. Which of the following would happen? - ANSWER
The solar and sidereal days would be the same length.
Which place experiences greater variability between the seasons? - ANSWER
Nunavut, Canada (latitude 63° N)
Which is the correct explanation for the phases of the Moon? - ANSWER Half
of the Moon is always sunlight, and we always can see half of the Moon, but those
halves aren't always the same.
You observe the star Aldebaran low in the eastern sky at midnight. Tomorrow at
11:56pm (that is, four minutes less than one day) you observe Aldebaran again.
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