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AST 1002 UF - Modules 1-12 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS
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AST 1002 UF - Modules 1-12 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS
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AST 1002 UF - Modules 1-12 QUESTIONS ANDANSWERS WITH COMPLETE SOLUTIONS
How long ago did dinosaurs live? - ANSWER 68 million years
How old do we think the universe is? - ANSWER 13.8 billion years
If the whole age of the universe is scaled so that the beginning of the universe is
on January 1st and today is Dec 31st, how long ago would the dinosaurs have
lived? - ANSWER 3 days ago
The first images of Earth from above the surface were taken - ANSWER after
World War II
How large does our planet appear to be when viewed from the outer solar
system? - ANSWER it is not resolved, appears as a dot
How many terrestrial planets are in the solar system and what are they made of? -
ANSWER 4 terrestrial planets, made mostly of rock and metals
What are the Jovian planets? - ANSWER the four outer planets, composed
mostly of gasses and ices
Which of the following defines a planet - ANSWER a planet is any object that
orbits a star and is more massive than everything else in its orbit
,Comets and asteroid differ mostly in - ANSWER composition
What powers a star? - ANSWER nuclear fussion
Most of the mass in our Galaxy is found in - ANSWER dark matter
Our cosmic address is - ANSWER Earth, Solar System, Milky Way Galaxy, Local
Group, Virgo Supercluster Universe
All stars in a constellation are at the same distance from Earth. - ANSWER False
Stars in a constellation are together because they are bound together by gravity. -
ANSWER False
Which of the following three cities (Gainesville, FL, Rio de Janeiro, Brazil, and
Nuuk, Greenland) see more circumpolar stars? - ANSWER Nuuk
If you were standing at 0 degrees latitude, you will not see circumpolar stars. -
ANSWER True
Which of the following cities have the hottest summers and why? - ANSWER
Rio de Janeiro, because the Sun's altitude is the sky is higher
If you are in Gainesville, during which month of the year does sunlight hit the
ground with the lowest angle? - ANSWER December
,At what time do you see the New Moon rising? - ANSWER Between 5 am and 7
am
What is happening when we see Mars going in retrograde motion? - ANSWER
Earth is passing Mars in its orbit
What is a circumpolar star? - ANSWER a star that always remains above your
horizon
Which of the following statements is true? - ANSWER Both A and C are true.
Why is it summer in the Northern Hemisphere when it is winter in the Southern
Hemisphere? - ANSWER The Northern Hemisphere is tilted toward the Sun and
receives more direct sunlight.
Which of the following statements about stellar parallax is true? - ANSWER The
closer a star is to us, the more parallax it exhibits.
How many arcseconds are in one degree? - ANSWER 3,600
We can't detect stellar parallax with naked-eye observations. Which of the
following would make parallax easier to observe? - ANSWER increasing the size
of Earth's orbit
, If part of the full moon passes through Earth's umbra, we will see a(n) -
ANSWER partial lunar eclipse.
What conditions are required for a lunar eclipse? - ANSWER The phase of the
Moon must be full, and the nodes of the Moon's orbit must be nearly aligned with
Earth and the Sun.
What causes the apparent retrograde motion of the planets? - ANSWER As
Earth passes another planet, the other planet appears to move backward with
respect to the background stars, but the planet's motion does not really change.
Which of the following statements about lunar phases is true? - ANSWER It is
possible to have two full moons during January, but not during February.
When someone on Earth observes the Moon in the first-quarter phase, someone
on the Moon facing Earth observes Earth in the - ANSWER third-quarter Earth
phase
At approximately what time would a first quarter moon rise? - ANSWER noon
In addition to the conditions required for any solar eclipse, what must also be true
in order for you to observe a total solar eclipse? - ANSWER The Moon's umbra
must touch the area where you are located.
Which of the following correctly lists speeds from slowest to fastest? -
ANSWER Earth's speed of rotation on its axis, typical speeds of stars in the
local solar neighborhood relative to us, Earth's speed of revolution about the Sun,
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