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Astronomy A CBA unit 3
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Explain what 'redshift' is.
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How many years old do most scientists believe the universe is?
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6 million
14 billion
42
2.4 billion
Define 'cosmology'
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Pick a random object around you. Identify one element that it contains (it's OK to look this one up if you don't know).
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Select the
three
main particles that make up atoms
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Electrons
Neutrinos
Protons
Gravitons
Photons
Neutrons
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