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ASTR FINAL EXAM LATEST 2024 WITH ACTUAL QUESTIONS AND CORRECT VERIFIED ANSWERS/ALREADY GRADED A+ 100% GUARANTEED TO PASS CONCEPTS(ALL WHAT YOU NEED) LATEST EDITION 2024
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ASTR
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ASTR
ASTR FINAL EXAM LATEST 2024 WITH ACTUAL QUESTIONS
AND CORRECT VERIFIED ANSWERS/ALREADY GRADED A+
100% GUARANTEED TO PASS CONCEPTS(ALL WHAT YOU
NEED) LATEST EDITION 2024
ASTR FINAL EXAM LATEST 2024 WITH ACTUAL QUESTIONS
AND CORRECT VERIFIED ANSWERS/ALREADY GRADED A+
100% GUARANTEED TO PASS CONCEPTS(ALL WHAT YOU
NEED) LATEST EDITION 2024
Which of the following has your "cosmic address" in the correct order? -
ANSWER-You, Earth, solar system, Milky Way Galaxy, Local Group, Local
Supercluster, universe
When we look at an object that is 1,000 light-years away we see it - ANSWER-as
it was 1000 years ago
Why do the patterns of the stars in our sky look the same from year to year? -
ANSWER-Although these stars move quite fast by human standards, they are so
far away that it would take thousands of years for their motion to be noticeable
to the eye.
Relative to the age of the universe, how old is our solar system? - ANSWER-It is
between about one-quarter to one-half the age of the universe.
Suppose we make a scale model of our solar system, with the Sun the size of a
grapefruit. Which of the following best describes what the planets would look
like? - ANSWER-They are all much smaller than the sun. Four planets are within
about 20 meters of the Sun, while the remaining planets are spread much
farther apart, with Pluto more than a half a kilometer from the Sun.
,Using the ideas discussed in the text, in what sense are we "star stuff"? -
ANSWER-Nearly every atom from which we are made was once inside of a star
When did humans learn that the Earth is not the center of the universe? -
ANSWER-Within the past 500 years
How are galaxies important to our existence? - ANSWER-Galaxies recycle
material from one generation of stars to the next, and without this recycling we
could not exist.
If we imagine the history of the universe compressed into one year, dinosaurs
walked on Earth - ANSWER-about 6 days ago
How long would it take to count all the stars in the Milky Way Galaxy at a rate
of one star per second? - ANSWER-Several thousand years
The total number of stars in the observable universe is about - ANSWER-the
same as the number of grains of sand on all the beaches on Earth
Astronomers infer that the universe is expanding because distant galaxies all
appear to - ANSWER-be moving away from us, with more distant ones moving
faster
How do the speeds at which we are moving with the Earth's rotation and orbit
compare to the speeds of more familiar objects? - ANSWER-The Earth's
rotation is carrying most people around the axis faster than a commercial jet
travels, and the Earth's orbit is carrying us around the Sun faster than the
Space Shuttle orbits the Earth/
,Where is our solar system located within the Milky Way Galaxy? - ANSWER-
Roughly halfway to two-thirds between the center and the edge of the visible
disk of the galaxy
Suppose we look at two distant galaxies: Galaxy 1 is twice as far away as Galaxy
2. In that case - ANSWER-we are seeing Galaxy 1 as it looked at an earlier time
in the history of the universe than Galaxy 2
How did the Ptolemaic model explain the apparent retrograde motion of the
planets? - ANSWER-It held that the planets moved along small circles that
moved on larger circles around the Earth, and that the combined motion
sometimes resulted in backward motion.
Ptolemy was important in the history of astronomy because he - ANSWER-
developed a model of the solar system that made sufficiently accurate
predictions of planetary positions to remain in use for many centuries.
The astrology practiced by those who cast predictive horoscopes can be tested
by - ANSWER-comparing how often the predictions come true to what would
be expected by pure chance
Galileo challenged the idea that objects in the heavens were perfect by -
ANSWER-observing sunspots on the sun and mountains on the moon
Suppose that the planet Uranus were much brighter in the sky, so that it was as
easily visible to the naked eye as Jupiter or Saturn. Which one of the following
statements would most likely be true in that case? - ANSWER-A week would
have 8 days instead of 7
, Which of the following is NOT one of the major hallmarks of science? -
ANSWER-New scientific ideas are always based on small changes to old ideas
and are never revolutionary.
Earth is farthest from the Sun in July and closest to the Sun in January. During
which northern hemisphere season is Earth moving fastest in its orbit? -
ANSWER-Winter
Which of the following is NOT part of a good scientific theory? - ANSWER-A
scientific theory cannot be accepted until it has been proven true beyond all
doubt.
All of the following statements are true. Which one follows directly from
Kepler's third law (p^2=a^3)? - ANSWER-Venus orbits the Sun at a slower
average speed than Mercury.
Our standard hour is always the same amount of time (60 minutes, or 1/24 of a
solar day). In contrast, the hour of ancient Egypt - ANSWER-was longer than
today's hour in the summer and shorter than today's hour in the winter.
When Copernicus first created his Sun-centered model of the universe, it did
not lead to substantially better predictions of planetary positions than the
Ptolemaic model. Why not? - ANSWER-Copernicus used perfect circles for the
orbits of the planets.
What do the structures of Stonehenge, the Templo Mayor, the Sun Dagger, and
the Big Horn Medicine Wheel all have in common? - ANSWER-They were all
used by ancient peoples for astronomical observations.
Which of the following is a form of electrical potential energy? - ANSWER-
energy coming to your house from power companies
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