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ASTRO 205 Exam 2 Revision Study Questions and Answers Correct Rated A
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ASTRO 205 Exam 2 Revision Study Questions and Answers Correct Rated A
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ASTRO 205 Exam 2 Revision StudyQuestions and Answers Correct Rated A
What are planetary rotation and orbital revolution? (explain using a
diagram)
Correct Answer –
Which side of the moon "lights up" first after a new moon? Which side of
the moon becomes dark first after the full moon?
Correct Answer -The side closest to the Sun; The side furthest from the sun.
How long do each of the above-mentioned phases appear to last?
Correct Answer -They appear to last 3-4 days.
What causes an eclipse?
Correct Answer -one celestial body temporarily obscures another celestial
body relative to an observe
What are the eclipse conditions for a solar eclipse? Lunar eclipse?
Correct Answer -Lunar Eclipse: The Earth is between the sun and
,the moon, causing the Earth to cast a shadow onto the moon.
Solar Eclipse: The moon passes between the Earth and the sun and the
moon casts a shadow on the Earth.
Is the moon or Earth closer to the sun during a lunar eclipse? Solar eclipse?
Correct Answer -Lunar Eclipse: earth is closer
Solar Eclipse: moon is closer
Does the moon orbit the Earth in the same plane that the Earth orbits the
sun? Does the moon follow the ecliptic? Why do we not see solar or lunar
eclipses every month?
Correct Answer -No...
What are the three types of lunar eclipses? Where is the moon located for
each type?
Correct Answer -Total Lunar Eclipse: Entire Moon is in umbra.
Partial Lunar Eclipse: Any part of the Moon enters umbra but not entire
Moon.
Penumbral Lunar Eclipse: Any part of the moon in penumbra, none of
Moon in umbra.
Who on earth can observe a lunar eclipse?
Correct Answer -Only observers on the night side of the Earth can see.
What are the two main categories of solar eclipses?
Correct Answer -Partial Solar Eclipse and Total Solar Eclipse
, What type of solar eclipse is an annular eclipse? Where is the moon in it's
orbit for this type of eclipse to occur?
Correct Answer -Partial Solar Eclipses; Must be apogee
Who on the Earth can see a total eclipse (or annular eclipse)? Who on the
Earth can see a partial eclipse?
Correct Answer -Total - must be in umbra
Partial - must be in penumbra
What type(s) of solar eclipses are safe to observe with unprotected eyes?
Correct Answer -Total Solar Eclipse
What is another name for diurnal motion? What causes diurnal motion?
Correct Answer -Daily Motion; Caused by Earth's rotation
Does diurnal motion look the same at all points on the earth? Explain.
Correct Answer -Yes, all celestial objects move from east to west due to
the rotation of the Earth.
What is another name for direct motion? What causes direct motion?
Correct Answer -Yearly Motion; Caused by the revolution of a body
around another.
What causes the direct motion of the moon? Sun? Planets?
Correct Answer -Moon: revolution of Moon around the Earth
Sun: revolution of the Earth around the Sun
Planets: revolution of planets around the Sun
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