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ASTRO 1504 FINAL EXAM
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ASTRO 1504 FINAL EXAM2024-2025
The sun sets in the sky every 24 hours because? - ANSWER the earth spins around
its axis once every 24 hours
how long does it take for the earth to orbit the sun once - ANSWER 1 year
how long does it take for the earth to orbit the moon once - ANSWER 1 month
The Moon's orbit is marked with a dashed line. If you saw a full moon on Earth,
where would the moon be in its orbit? - ANSWER 5
there is a lunar eclipse when - ANSWER the moon passes through earth's shadow
in the planetary orbit shown, where would the planets be moving the fastest -
ANSWER a
in the planetary orbit shown where would the sun be - ANSWER a
in the planetary orbit where is the aphelion - ANSWER d
what type of radiation has the most energetic photons - ANSWER gamma rays
which type of radiation has the longest wavelengths - ANSWER radio waves
the North Star (Polaris) does not appear to move throughout the night because -
ANSWER it is positioned directly over the earth's North Pole
if a planet always has the same distance to the sun throughout its orbit its
eccentricity is - ANSWER 0
eccentricity always lies between - ANSWER 0-1
to make the gravitational attraction weaker between two object I could - ANSWER
increase the distance between them
, where do the stars always circle the zenith (and never rise and set) - ANSWER at
the North Pole
do stars near the equator rise and set? - ANSWER yes
Keplers 2nd law - ANSWER planets move slowest at the furthest point from the
sun
from which location could you observe all of the stars during a year - ANSWER
equator
of the following types of radiation, which travels the fastest - ANSWER they all
travel at the same speed
a consequence of earth precession is - ANSWER there will be a new North Star in
the next few thousand years
circumpolar stars have this special quality - ANSWER they never rise or set
why is there a four-minute difference between a solar day and a sidereal day -
ANSWER the earth is moving in it orbit around the sun
how would the orbital period of a planet change if I decreased the semi major axis
of its orbit? which law tells us this - ANSWER it would get shorter, Kepler 3rd law
Keplers 3rd law - ANSWER if the semi-major axis of orbit gets larger, period gets
longer, closer the planet shorter time to orbit sun
how long is the day as compared to the night on spring equinox and autumnal
equinox - ANSWER day and night are equal
what is the most likely reason for seasons - ANSWER the earths axial tilt causes
more direct light to fall on earth during summer than winter
the sun's apparent path around the celestial sphere is called - ANSWER the ecliptic
every lunar cycle, we get a solar and lunar eclipse - ANSWER false
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