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Describe one observation astronomers use to show that the universe is expanding
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red shift of starlight.
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-Explain how and when the universe formed according to the big bang theory?
-Explain how and when our solar system formed?
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According to the Big Bang theory, the universe originated from an extremely hot and dense state
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1. What observations show that the universe is expanding?
2. What can astronomers infer from the fact that other galaxies are
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doesn't those two questions answer each other? 1. What observations show that the universe is
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As evidence supporting the Big Bang theory, what does the redshift of light from galaxies indicate?(1 point)
Responses The
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The universe is expanding.
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As evidence supporting the Big Bang Theory, what does the redshift of light from galaxies indicate?(1 point)
Responses The
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The universe is cooling off.
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As evidence supporting the Big Bang theory, what does the redshift of light from galaxies indicate?(1 point) Responses The
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The redshift of light from galaxies indicates that the universe is expanding.
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What type of evidence does cosmic background radiation provide about the origins of the universe?(1 point) Responses It proves
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The type of evidence that cosmic background radiation provides about the origins of the universe is:
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What type of evidence does cosmic background radiation provide about the origins of the universe?(1 point) Responses It proves
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It verifies that the early universe was once extremely hot.
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Explain why Hubble's observation of red shift in light from distant galaxies led him to the discovery that the universe is
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That is how you get a red shift: by having the light source move away from the observer. The only
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Which of the following is the evidence that suggests the Universe is expanding?
A. The universe is getting colder, which can only
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C. Almost all light in the universe is red-shifted, meaning those objects creating that light are
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The most cosmological measurements show that the universe is extremely flat (Ωk≈0) and that the surface brightness of objects
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á less than −4
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