Astronomy Test #2

54 Questions  I  By Smatrypants
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Astronomy Quizzes & Trivia
Chapters 4-5, 13-14.

  
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1.  A particular star with the same spectral type as the Sun (G2) has a luminosity of 50 solar luminosities. What does this tell you about the star? 
A.
B.
C.
D.
E.
2.  Ultraviolet radiation from a star
A.
B.
C.
D.
E.
3.  A faster-moving star in a binary is the
A.
B.
C.
D.
4.  Radio telescopes are often connected together to do interferometry. What is the primary problem overcome by radio interferometry?
A.
B.
C.
D.
E.
5.  You research the star Sirius and find that its spectral lines are blue shifted. What does this tell you about Sirius?
A.
B.
C.
D.
E.
6.  The visible part of the electromagnetic spectrum can be divided into six color bands of Red, Orange, Yellow, Green, Blue and Violet (from long to short wavelength). A single photon of which of these colors has the greatest amount of energy?
A.
B.
C.
D.
E.
7.  Magnetic fields inside sunspots are ______________those in surrounding regions.
A.
B.
C.
D.
8.  Star A has higher luminosity than Star B, but is farther away. Which has higher apparent brightness?
A.
B.
C.
D.
9.  Select the order of star color in increasing temperature from cool to hot.
A.
B.
C.
D.
10.  If a star's distance is 10 pc, what is its parallax?
A.
B.
C.
D.
11.  Granulation is caused by
A.
B.
C.
D.
E.
12.  Magnetic field is continuously produced and deformed in the Sun by    
A.
B.
C.
D.
13.  High temperatures are required to get H nuclei to fuse because they ________ one another because of their __________ electric charges.
A.
B.
C.
D.
14.  The sun's magnetic field is evident in the looped shapes of
A.
B.
C.
D.
E.
15.  Binary (double) stars can be detected by
A.
B.
C.
D.
E.
16.  What are the two most important intrinsic properties used to classify stars?
A.
B.
C.
D.
17.  ______________ has (have) wavelengths that are longer than visible light.
A.
B.
C.
D.
E.
18.  The Arecibo Observatory is:
A.
B.
C.
D.
19.  Of the following, which color represents the lowest surface temperature star?
A.
B.
C.
D.
E.
20.  A plot of the continuous spectra of five different stars is shown in the figure below. Based on these spectra, which of the stars is the hottest?
A.
B.
C.
D.
21.  Star E is the same temperature as star F but is four times as luminous. Which star is bigger?    
A.
B.
C.
D.
22.  What is the wavelength of the longest wavelength light visible to the human eye?
A.
B.
C.
D.
23.  How long does the sunspots cycle last, on average?
A.
B.
C.
D.
24.  What is the name of the effect when an electromagnetic wave is bent as it passes from one material into another?
A.
B.
C.
D.
25.  The light we see from the Sun comes from which layer?    
A.
B.
C.
D.
26.  Absolute zero is
A.
B.
C.
D.
E.
27.  Infrared astronomy is often done from high-flying aircraft because
A.
B.
C.
D.
E.
28.  Which electron energy level transition corresponds to a hydrogen atom absorbing a visible-light photon that has a wavelength of 656 nanometers?
A.
B.
C.
D.
E.
29.  Which type of binaries are found via Doppler shifts?    
A.
B.
C.
D.
E.
30.  Ultraviolet radiation is hard to observe primarily because
A.
B.
C.
D.
31.  Star A has the same luminosity as star B. Also, star A is 3 times as far as Star B from Earth. Then star A is ________ as bright as star B as seen from Earth. 
A.
B.
C.
D.
32.  Stars of similar temperatures but different sizes
A.
B.
C.
D.
33.  The reason to prefer a reflecting over a refracting telescope is its
A.
B.
C.
D.
34.  The lowest energy level in an atom is
A.
B.
C.
D.
E.
35.  Star C and star D are equally luminous. Star C is twice as far away from Earth as star D. How do the brightness level of stars C and D compare?
A.
B.
C.
D.
36.  The number of ___________ in the nucleus determines what element the nucleus is.
A.
B.
C.
D.
E.
37.  If continuous spectrum light from a star passes through a cool low density gas on its way to your telescope and spectroscope, _____________ spectrum on the continous spectrum results.
A.
B.
C.
38.  What is the difference between brightness and luminosity?
A.
B.
C.
D.
39.  Particle accelerators that smash atoms or particles together at high speeds, such as Fermilab or CERN, are important tools used for simulating conditions in
A.
B.
C.
D.
40.  Neutrinos are created in reaction in the _____________ of the sun.
A.
B.
C.
D.
41.  The most massive part of the atom is (are) the ___________which has (have) a ___________charge
A.
B.
C.
D.
42.  Which of these are not associated with the active Sun?
A.
B.
C.
D.
E.
43.  The wavelength of maximum intensity that is emitted by a black body is
A.
B.
C.
D.
E.
44.  The ________________ of a telescope is a measure of its ability to show fine detail and depends on the diameter of the objective.
A.
B.
C.
D.
E.
45.  The emission and absorption lines of a given atom occur at the exact same energies.
A.
B.
46.  If light from a star passes from an excited low density gas seen against the dark background of space to your telescope and spectroscope, __________ spectrum results.
A.
B.
47.  What is the net result of the proton-proton chain?
A.
B.
C.
D.
48.  The fact that the speed of light is constant (as it travels through a vacuum) means that
A.
B.
C.
D.
49.  Which of the following is the most common type of star?
A.
B.
C.
D.
50.  Parallax would be easier to measure if    
A.
B.
C.
D.
E.
51.  By what mechanism does radiation reach the Sun's surface from its interior?
A.
B.
C.
D.
52.  The entire electromagmetic spectrum can be divided into the seven bands of Radio, Microwave, Infrared, Visivle, Ultraviolet, X-ray, and Gamma-ray (from longest to shortest wavelength). To which of these two bands is Earth's atmosphere the most transparent?
A.
B.
C.
D.
E.
53.  The Doppler shift can be used to determine the _________ of an object.
A.
B.
C.
D.
54.  Which of the following layers of the Sun makes up the majority of its interior?    
A.
B.
C.
D.
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