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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.  Parallax would be easier to measure if    
A.
B.
C.
D.
E.
2.  Star E is the same temperature as star F but is four times as luminous. Which star is bigger?    
A.
B.
C.
D.
3.  Ultraviolet radiation is hard to observe primarily because
A.
B.
C.
D.
4.  How long does the sunspots cycle last, on average?
A.
B.
C.
D.
5.  The most massive part of the atom is (are) the ___________which has (have) a ___________charge
A.
B.
C.
D.
6.  Binary (double) stars can be detected by
A.
B.
C.
D.
E.
7.  By what mechanism does radiation reach the Sun's surface from its interior?
A.
B.
C.
D.
8.  Ultraviolet radiation from a star
A.
B.
C.
D.
E.
9.  The lowest energy level in an atom is
A.
B.
C.
D.
E.
10.  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.
11.  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.
12.  What is the wavelength of the longest wavelength light visible to the human eye?
A.
B.
C.
D.
13.  Infrared astronomy is often done from high-flying aircraft because
A.
B.
C.
D.
E.
14.  The Arecibo Observatory is:
A.
B.
C.
D.
15.  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.
16.  Which of these are not associated with the active Sun?
A.
B.
C.
D.
E.
17.  Magnetic fields inside sunspots are ______________those in surrounding regions.
A.
B.
C.
D.
18.  The fact that the speed of light is constant (as it travels through a vacuum) means that
A.
B.
C.
D.
19.  Which of the following is the most common type of star?
A.
B.
C.
D.
20.  What is the difference between brightness and luminosity?
A.
B.
C.
D.
21.  Neutrinos are created in reaction in the _____________ of the sun.
A.
B.
C.
D.
22.  Which of the following layers of the Sun makes up the majority of its interior?    
A.
B.
C.
D.
23.  Star A has higher luminosity than Star B, but is farther away. Which has higher apparent brightness?
A.
B.
C.
D.
24.  Radio telescopes are often connected together to do interferometry. What is the primary problem overcome by radio interferometry?
A.
B.
C.
D.
E.
25.  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.
26.  Which type of binaries are found via Doppler shifts?    
A.
B.
C.
D.
E.
27.  Select the order of star color in increasing temperature from cool to hot.
A.
B.
C.
D.
28.  Of the following, which color represents the lowest surface temperature star?
A.
B.
C.
D.
E.
29.  What is the net result of the proton-proton chain?
A.
B.
C.
D.
30.  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.
31.  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.
32.  High temperatures are required to get H nuclei to fuse because they ________ one another because of their __________ electric charges.
A.
B.
C.
D.
33.  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.
34.  Granulation is caused by
A.
B.
C.
D.
E.
35.  The sun's magnetic field is evident in the looped shapes of
A.
B.
C.
D.
E.
36.  If a star's distance is 10 pc, what is its parallax?
A.
B.
C.
D.
37.  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.
38.  What are the two most important intrinsic properties used to classify stars?
A.
B.
C.
D.
39.  The Doppler shift can be used to determine the _________ of an object.
A.
B.
C.
D.
40.  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.
41.  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.
42.  The number of ___________ in the nucleus determines what element the nucleus is.
A.
B.
C.
D.
E.
43.  ______________ has (have) wavelengths that are longer than visible light.
A.
B.
C.
D.
E.
44.  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.
45.  The reason to prefer a reflecting over a refracting telescope is its
A.
B.
C.
D.
46.  The emission and absorption lines of a given atom occur at the exact same energies.
A.
B.
47.  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.
48.  Magnetic field is continuously produced and deformed in the Sun by    
A.
B.
C.
D.
49.  The wavelength of maximum intensity that is emitted by a black body is
A.
B.
C.
D.
E.
50.  A faster-moving star in a binary is the
A.
B.
C.
D.
51.  The light we see from the Sun comes from which layer?    
A.
B.
C.
D.
52.  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.
53.  Stars of similar temperatures but different sizes
A.
B.
C.
D.
54.  Absolute zero is
A.
B.
C.
D.
E.
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