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Astr 100 Final Exam

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Name: Date: Final Section-1 Type the letter that represents the best answer to each of the multiple choice questions. Answer all questions in this section. Each question is worth 1 point. This section is worth 40 points. [1] In the scientific method, a hypothesis is _____. A ) is a statement of fact B ) makes a prediction that can be tested C ) is usually proven to be correct D ) can only be tested once E ) all of these [2] Which of the following can be considered a definition of "theory?" A ) A theory can be an explanation of scientific laws. B ) A theory is an integrated explanation of numerous hypotheses, each supported by a large body of observations and experiments. C ) A theory is a condensation and …show more content…

A) is speeding up B) is slowing down C) has stopped D) is constant [24] Where are we? A) At the exact center of an expanding Universe, as shown by the universal expansion away from us in all directions. B) Near, although probably not right at, the center of the Universe, as shown by the fact that the edge is so far away. C) Somewhere in an expanding Universe, but not in any special part of it. D) Near the edge of an expanding Universe, as shown by the microwave radiation coming to us from the edge. [25] Which of the following does not play a role in creating the elements needed for life as we know it? A) high mass stars B) heavy element fusion C) supernovae D) neutron stars [26] A successful theory of Solar System formation must be able to primarily explain: A) The origin of life. B) The fact that Pluto’s orbit is very elliptical. C) The fact that the planetary orbits lie approximately in the same plane. D) The fact that Mars has satellites. [27] Scientists can determine what a distant star is made of by looking at ____. A) its continuous spectrum B) its absorption spectrum C) similar stars D) samples obtained from the star [28] 1 degree of angular size is equal to A) 30 arc-seconds B) 60 arc-seconds C) 60 arc-minutes D) 24 hours [29] Modern constellations are A) Astrological signs along the ecliptic B) Groupings of bright stars in certain patterns C) Areas of the celestial sphere of different sizes and shapes

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