1) A spiral galaxy can be described as what type of shape? a) no distinct shape b) triangular c) oval d) pinwheel 2) What lies at the center of the Milky Way galaxy? a) Earth b) North Star c) a black hole d) the sun 3) How are asteroids and comets similar? a) Both are frozen. b) Both are composed of gases. c) Both are composed of rock. d) Both orbit the sun 4) At certain times of the year, five planets can be seen from Earth, including Mars and a) Uranus. b) Saturn c) Juno. d) Neptune. 5) What caused people to accept the geocentric model of the universe? a) Noticing the gravity will eventually pull all the planets and the universe back together. b) Measurements and mathematical models demonstrated that the planets orbit around the sun. c) Objects seem to move across the sky, and Earth did not feel like it was moving. d) Telescopes allowed for a much detailed view of the circular orbits of the planets 6) What triggered the cyclic model of the origin of the universe? a) Some scientists began to use telescopes and mathematics to study the universe b) Some scientists found that the amount of radiation in space is not consistent with an explosion c) Some scientists argue that the planets do not orbit in circles around the sun. d) Some scientists think that the universe will not keep expanding forever. 7) Which ideas describe the big crunch? a) After the universe reaches its expansion limit, gravity will pull it all back together b) The universe goes through infinite cycles of expansion and contraction. c) The universe is not only composed of the objects that we can see. d) The big bang actually never occurred, and the universe must have a different origin. 8) “While the big bang theory is the most popular modern theory of how the universe formed, it is incomplete.Which question does the big bang theory leave unanswered?  a) What is the temperature of deep space? b) When did the universe form? c) How did galaxies and stars form? d) What is the future of the universe? 9) Which theroy of how the universe formed is best supported by evidence of radio waves detected in space? a) big bang theroy b) big crunch theroy c) heliocentric model d) steady state theroy 10) use the specturm readings from the sun (upper) and a star (lower) to answer the question.Which inference can be made from the spectrum readings? a) There is a red shift, which means that the star is moving toward the sun. b) There is a blue shift, which means that the star is moving toward the sun c) There is a blue shift, which means that the star is moving away from the sun d) There is a red shift, which means that the star is moving away from the sun

The universe unit test

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