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ASTRO 205 Multiple Exam Questions and Answers Rated A.
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ASTRO 205 Multiple Exam Questions and Answers Rated A.
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ASTRO 205 Multiple Exam Questionsand Answers Rated A.
Who first calibrated the Cepheid period-luminosity relationship to use it in
determining distance?
a. Henrietta Leavitt
b. Edwin Hubble
c. Hipparchus
d. Carl Sagan
e. Harlow Shapley
Verified Answer -e. Harlow Shapley
1. If light from the sun takes eight minutes to reach Earth and about five
hours to reach Pluto, what is the rough distance from the sun to Pluto?
5AU
40AU
67AU
83AU
121 AU
Verified Answer -40AU
2. An observer in the Northern Hemisphere watches the sky for several
hours. Due to the motion of the Earth, this observer notices that the stars
near the NCP appear to move
counter-clockwise.
clockwise.
,from left to right.
from right to left.
away.
Verified Answer -counter-clockwise.
3. Star A has an apparent visual magnitude of 13.4 and Star B has an
apparent visual magnitude of 15.4. Star A is _______ than Star B.
2 times fainter
2 times brighter
6.3 times fainter
6.3 times brighter
8.7 times brighter
Verified Answer -6.3 times brighter
4. A solar or lunar eclipse will occur
near the solstice.
any time the moon is new or full.
when the sun is near the solstice and the moon is new or full.
half-way through an eclipse year.
when the sun is near the line of nodes of the moon and the moon is new
or full.
Verified Answer -when the sun is near the line of nodes of the moon and
the moon is new or full.
What is the angle between the noon sun on the winter solstice and the
southern horizon for an observer at latitude 38° N?
α. 90° β. 66.5° χ. 52° δ. 28.5° ε. 14.5°
Verified Answer -28.5°
,A marble has a diameter of 2cm. At what distance would the marble have
an angular diameter of 1 arc second?
6.5 cm
1.7 miles
8.9m
23.2 m
4.1 km
Verified Answer -4.1 km
7. Comet Halley has an orbital period of 76 years. What is the average
distance to Comet Halley from the sun?
51AU
18AU
114 AU
38AU
11AU
Verified Answer -18AU
8. A _______ is a system of rules and principles that can be applied to a
wide variety of circumstances, but is not universally accepted.
theory
paradigm
natural law
model
hypothesis
Verified Answer -theory
, 9. Kepler's Second Law of Planetary Motion implies that
a planet should move at its greatest speed when it is closest to the sun.
the distance that a planet is from the sun depends on the mass of the
planet.
uniform circular motion is adequate to describe the motion of all planets.
the distance between the planet and the sun changes as the planet orbits
the sun.
the orbits of the planets are ellipses with the sun as one of the foci.
Verified Answer -a planet should move at its greatest speed when it is
closest to the sun.
10. A telescope that experiences chromatic aberration and has low light
gathering power is most likely
a small diameter reflecting telescope.
a small diameter refracting telescope.
a large diameter refracting telescope.
a large diameter reflecting telescope.
a large diameter radio telescope.
Verified Answer -a small diameter reflecting telescope.
11. A _______ is a piece of glass with many small parallel lines etched on
its surface to produce a spectrum.
grating
spectrograph
charge-coupled device
prism
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