8.9 C Check#1

What is the Big Bang Theory?

• A theory that describes the formation of the solar system.

• A theory that explains the origin of the universe from a singular point.

• A theory about the lifecycle of stars.

• A theory about the expansion of galaxies.

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Which of the following is a simple procedure used to determine the age of the universe?

• Observing the color of stars.

• Measuring the cosmic microwave background radiation.

• Counting the number of galaxies.

• Calculating the distance to the nearest star.

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How does the redshift of galaxies provide evidence for the Big Bang Theory?

• It shows that galaxies are moving closer together.

• It indicates that galaxies are moving away from each other, suggesting an expanding universe.

• It proves that galaxies are stationary.

• It demonstrates that galaxies are shrinking.

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What is cosmic microwave background radiation?

• Radiation from the sun.

• Heat from the Earth's core.

• Thermal radiation left over from the Big Bang.

• Light from distant stars.

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Explain how cosmic microwave background radiation supports the Big Bang Theory.

• It shows that the universe is cooling down over time.

• It provides a snapshot of the early universe, supporting the idea of a hot, dense beginning.

• It indicates that the universe is contracting.

• It suggests that the universe is static.

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What is the current state of the universe?

• It is collapsing into a black hole

• It is not changing

• It is expanding, with galaxies moving away from each other.

• It is shrinking, with galaxies moving closer to each other.

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What force caused galaxies to form?

• Electromagnetic force
• Gravitational force
• Nuclear force
• Frictional force

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What force is causing the universe to expand?

• Dark energy
• Gravity
• Magnetic force
• Friction

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Which of the following best describes the universe according to the Big Bang Theory?

• A static and unchanging entity.

• An expanding entity that began from a hot, dense state.

• A shrinking entity that will eventually collapse.

• A universe that has always existed in its current form.

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What is the most likely theory for how our universe will end?

• Vacuum Decay
• Steady State Theory
• Heat Death (Big Freeze)
• Big Crunch

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