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ASTR 1010 Final Review 2023/2024 already graded A+
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ASTR 1010 Final ReviewTotal eclipses of both kinds are rare, but is one kind more visible than the other - ANSmore
people can see a total lunar eclipse
What causes the "backwards" motion of planets relative to the stars ("retrograde motion") in the
heliocentric model - ANSplanets closer to the sun orbit fast
In Boulder on the winter solstice the Sun will rise in the ____ and set in the __ - ANSsoutheast,
southwest
Your daughter the astronaut calls you from the Moon one day, and says 'I'm looking straight up
at a beautiful full Earth'. How will Earth change in her sky? (East and west have the same
meanings on the moon as on Earth) - ANSthe phase will change to last quarter as the Earth
stays directly overhead
What naked-eye observation(s) supports the heliocentric theory of the solar system and
disproves the geocentric theory - ANSnone of the above, the heliocentric model can not be
proven with naked eye observations
Because of precession... - ANSnone of the above the naked eye can not see the effects of
precession in our lifetime
Which observation(s) show that Earth's axis is tilted relative to its orbit plane - ANSthe sun rises
in the southeast for part of the year and northeast for the other part
In the heliocentric model of the solar system, what planets can be seen in a 'full phase' (or
nearly full) through a telescope on Earth - ANSall planets
How old is the universe - ANS14 billion years
Why does the moon rise and set - ANSbecause Earth rotates
Ptolemy's geocentric model of thesolar system was rejected because it offered no explanation
at all for which of the following - ANSnone of the above the geocentric model does not offer
solutions to them
Which of the following is the largest - ANSdistance to the nearest galaxy
Which way do circumpolar stars move around their celestial poles - ANScounterclockwise in the
north and clockwise in the south
, Stellar parallax is not visible to the naked eye. Which one of the following changes would make
the greatest difference in making parallax easier to detect - ANSdecrease the distance to the
stars
Which one of the changes would eliminate seasons on Earth - ANSChange the tilt of Earth's
axis form 23' to 0'
Your body is made mostly of H2O. Where was the element oxygen created - ANSit was created
inside stars
When is the Sun directly overhead at noon at the equator - ANSonly on the equinoxes (March
21 and September 23)
The constellation Taurusis visible on winter evenings but not summer evenings because -
ANSthe location of Earth on its orbit
Billions of years ago, the Moon was significantly closer to the Earth. How would eclipses have
been different back then - ANSmore solar eclipses would be total instead of annual
In other words, which observation is best explained with the 'model' that the Earth is a sphere -
ANSsome constellations appear or disappear as you travel north or south
Suppose you live in the United States and you see a crescent moon in your evening sky tonight.
What will a friend in India see when it's night there - ANSyour friend would also see a full moon
in her evening sky
In the heliocentric model of the solar system, what planets can be seen in a crescent phase
through a telescope on Earth? (You may ignore interference from the Sun.) - ANSonly Mercury
and Venus
Your daughter the astronaut calls you from the Moon one day, and says 'I'm looking straight up
at the Sun. How will the Sun move in her sky? (The units of time in the answers correspond to
those units on Earth) - ANSthe sun will set about 7 days later
Using the information of the diagram, which object has the shortest orbital period around the
Sun - ANSnone; all the periods are essentially the same
Consider a planet orbiting the Sun on an elliptical orbit. Which of the following is (or are) the
same at perihelion as they are at aphelion - ANSangular momentum
Which of the following is not a property of terrestrial planets - ANSlarger than jovian planets
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