Evidence for the Big Bang
Several independent lines of astronomical evidence support the Big Bang theory, that the universe began in an extremely hot, dense state and has been expanding ever since: the light from distant galaxies is systematically redshifted, stretched toward longer wavelengths, in a pattern that indicates the universe is currently expanding, faint microwave radiation detected in every direction matches the predicted leftover glow from the Big Bang itself, and the overall composition of ordinary matter in the universe, roughly three-quarters hydrogen and one-quarter helium, matches what the theory predicts should have formed in the universe's first few minutes.
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This midterm covers a lot of topics, so it's split into 2 parts. Each part includes a question from every one of its topics.
Midterm, Part 1 of 2
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This final covers a lot of topics, so it's split into 3 parts. Each part includes a question from every one of its topics.
Final, Part 1 of 3
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