Big Bang Cosmology

Before humans developed science, we explained what we saw by ___

• reading e-books

• making up stories

• searching the internet

• consulting the gods

The study of the physical origins and evolution of the Universe is called ___

• evolution

• cosmology

• botany

• university

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Darwin’s Theory of Evolution strongly implied the Earth was how old?

• at most a million years old

• at least millions of years old

• at most a billion years old

• at least billions of years old

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A popular model for the Universe, supported by Einstein, was that it was ___

• static

• expanding

• contracting

• created in five days

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In the 1910's Vesto Slipher analysed the spectra of “spiral nebulae” and found they were ___

• dimmer than expected

• missing spectral lines

• highly blueshifted

• highly redshifted

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The highly redshifted spectra of nebulae indicated that they were ___

• rushing toward us

• rushing away from us

• quickly expanding

• rotating quickly

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NGSS.HS-ESS1-2

In the 1920s Georges Lemaître proposed on theoretical grounds that the universe was ___

• contracting

• expanding

• static

• dying

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Edwin Hubble and Milton Humason found that the farther away a galaxy was, the faster it was ___

• moving away from us

• moving toward us

• rotating

• expanding

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Lemaître imagined everything in the cosmos squeezed into one infinitely dense blob called ___

• a “primeval atom” or the “cosmic egg”

• a “first speck” or the “universal onion”

• a “pristine point” or the “measureless cell”

• an “original crumb” or the “vast seed”

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NGSS.HS-ESS1-2

When the Universe was a tiny dot it would’ve been unimaginably, ___

• highly blueshifted

• highly redshifted

• chillingly cold

• hellishly hot

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