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Astronomy.

54 Questions  I  By Smatrypants
Astronomy Quizzes & Trivia
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1.  Who of the following was NOT a proponent of the heliocentric model of the solar system?
A.
B.
C.
D.
2.  Which of the following properties of an astronaut changes when he/she is standing on the Moon, relative to when the astronaut is standing on Earth?
A.
B.
C.
D.
3.  Which of the following most closely approximtes the number of stras in the Milky Way?
A.
B.
C.
D.
4.  Which of the following is true for an object in uniform circular motion?
A.
B.
C.
D.
E.
5.  Which of the following is the largest?
A.
B.
C.
D.
6.  Which of the following is false?
A.
B.
C.
D.
7.  Which choice lists the objects in correct size from smallest to largest?
A.
B.
C.
D.
8.  When the Earth catches up to a slower moving outer planet and passes it in its orbit like a faster runner overtakes a slower runner in an outside lane, the planet
A.
B.
C.
D.
9.  When it is winter in the northern hemisphere, it is ____________ in the southern hemisphere.
A.
B.
C.
D.
10.  When dropped from the same height (in a vacuum), when will a lead weight hit the ground compared to a less dense wood ball?
A.
B.
C.
11.  What was one of Newton's contributions to astronomy?
A.
B.
C.
D.
E.
12.  What does Kepler's second law indicate about the orbital speed of a planet?
A.
B.
C.
D.
13.  What did Newton determine is necessary for the force exerted by the Sun on the planets to yield elliptical orbits?
A.
B.
C.
D.
E.
14.  What causes summer here in the northern hemisphere? In the summer, at this point
A.
B.
C.
15.  What are the advantage(s) of placing telescopes in space?
A.
B.
C.
D.
16.  The ________________ is the point on the celestial sphere directly above any observer.
A.
B.
C.
D.
17.  The twelve constellations the solar system bodies move through are the
A.
B.
C.
D.
18.  The shortest day of the year for a person living in the Northen Hemisphere is the
A.
B.
C.
D.
19.  The rotation of the Moon is tidally locked to its orbital motion around Earth because
A.
B.
C.
D.
20.  The most massive elements (such as those that make up rocky planets like Earth) were formed
A.
B.
C.
21.  The Moon's sidereal period is 2.2 days shorter than the period during which the Moon's phases change because
A.
B.
C.
D.
22.  The Moon undergoes synchronous rotation, and as a consequence the
A.
B.
C.
D.
23.  The five naked-eye planets and two telescopic planets that wander among the stars in the sky are always near the
A.
B.
C.
D.
E.
24.  The eccentricity of the majority of the planetary orbits in our Solar System is approximately
A.
B.
C.
D.
25.  The cosmological principle states that
A.
B.
C.
D.
26.  The celestial sphere is:
A.
B.
C.
D.
E.
27.  Suppose an asteroid had an orbit with a semimajor axis of 4 AU. How long would it take for it to orbit once around the Sun?
A.
B.
C.
D.
28.  Seasons occur because
A.
B.
C.
D.
29.  Ptolemy's model of the universe
A.
B.
C.
D.
E.
30.  Precession of the rotation axis of Earth takes ________________ to complete a cycle.
A.
B.
C.
D.
E.
31.  Polaris, the North Star, does not appear to move in the sky because:
A.
B.
C.
D.
32.  Newton's first law states that objects in motion
A.
B.
C.
D.
33.  Neap tides occur
A.
B.
C.
D.
E.
34.  Io's volcanic activity is due to tidal forces exerted by
A.
B.
C.
D.
35.  If tonight the Moon is in the waxing gibbous phase, in three days the Moon will most likely be in the
A.
B.
C.
D.
36.  If the mass of the Earth is four times greater, then the pull of the Moon on the Earth is changed by a factor of
A.
B.
C.
D.
37.  If the distance between the Earth and Sun were cut in half, the gravitational force between these two objects would
A.
B.
C.
D.
38.  How did Nicolaus Copernicus account for the retrogade motion of the planets?
A.
B.
C.
D.
E.
39.  How did Kepler's first law of planetary motion alter the Copernican system?
A.
B.
C.
D.
E.
40.  Earth is closest to the Sun when the Northern Hemisphere experiences
A.
B.
C.
D.
41.  Consider the tidal force at the Earth's North Pole due to the Moon. The tidal force is pointed directly
A.
B.
C.
D.
42.  Based on the length of a lunar cycle, if there is a spring tide today, how long will it be until the next spring tide?
A.
B.
C.
D.
43.  An unbound orbit results when a satellite has a velocity greater than the escape velocity.
A.
B.
44.  An observer in the Northern Hemisphere watches the sky for several hours. Due to the motion of Earth, this observer notices that the stars near the north celestial pole appear to move
A.
B.
C.
D.
E.
45.  An empirical science is one that is based on
A.
B.
C.
D.
46.  An astronaut in free space (away from all objects) whirls a ball on a string in circular motion. If she cuts the string, the ball will move
A.
B.
C.
D.
47.  Although the Sun's gravitational pull on Earth is nearly 200 times greater than the Moon's, its tidal effect is only about 50 percent of the Moon's tidal effect.
A.
B.
48.  According to Newton's laws, how does the amount of gravitational force on Earth by the Sun compare to the amount of gravitational force on the Sun by Earth?
A.
B.
C.
D.
E.
49.  A _____________ becomes a _____________ when repeated testing of its predictions does not disprove it.
A.
B.
C.
D.
50.  A solar or lunar eclipse will occur
A.
B.
C.
D.
E.
51.  A solar eclipse that occurs when the Moon's umbra does not reach Earth's surface is called
A.
B.
C.
D.
52.  A light-year is defined as the
A.
B.
C.
D.
53.  A galaxy contains
A.
B.
C.
D.
54.  2.9x107 is the same as
A.
B.
C.
D.
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