Big Bang Theory

What is the Big Bang theory about?

• The theory that the universe is contracting

• The theory that the universe has been static for 13-15 billion years

• The theory that our universe began from one expansion event that occurred 13-15 million years ago

• The theory that our universe began from one expansion event that occurred 13-15 billion years ago

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NGSS.HS-ESS1-2

According to the Big Bang theory, how was the universe before the Big Bang?

• Cold and spread out

• Very hot and dense

• Completely empty

• Infinite in size

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What is a common misconception about the Big Bang?

• It was an explosion

• It was a rapid expansion of particles through space

• It was the beginning of the universe's contraction

• It was a small, cool event

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What is the estimated time period when the Big Bang occurred?

• 13-15 million years ago

• 13-15 billion years ago

• 4.5 billion years ago

• 100 million years ago

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What happened to the universe after the Big Bang according to scientists?

• The universe has stopped expanding

• The universe began contracting immediately

• The universe has not stopped expanding

• The universe has remained the same size

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What did not exist prior to the Big Bang according to many experts?

• Space and time

• Matter and energy

• Both A and B

• The concept of gravity

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What is still uncertain about the Big Bang theory?

• Whether the Big Bang actually occurred

• The exact definition of a singularity

• The evidence supporting the theory

• The existence of the universe

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What did Edwin Hubble observe in 1929 that led to the concept of the redshift of galaxies?

• The universe was contracting

• Far off galaxies were decreasing in distance from our own

• Far off galaxies were increasing in distance from our own

• The universe was in a steady state without expansion

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NGSS.HS-ESS1-2

What is the redshift of galaxies evidence of?

• The universe is contracting

• The universe is in a steady state

• The universe is always expanding

• The galaxies are moving towards us

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What does the Big Bang theory predict that we should still be able to detect in the universe?

• A strong magnetic field

• Microwave light

• Infrared light

• Ultraviolet light

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