A Brief History of the Universe

How do scientists believe the universe was created?

• The "Big Bang" theory.

• The "Theory of Evolution."

• The sun exploding.

• None of these.

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How old do scientists believe the universe is?

• 13,700,000 years old.

• 13,700,000,000 years old.

• 13,700 years old.

• 1,370 years old.

Is a sun a star?

• Yes.

• No.

• It depends, some stars are planets!

• It depends, some suns are planets!

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How old is planet Earth?

• 13.7 billion years old

• 13.7 million years old

• 4.5 million years old

• 4.5 billion years old

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A universe is made up of many galaxies.

• True

• False

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What is the name of our galaxy?

• Milky Way galaxy

• Andromeda galaxy

• Whirlpool galaxy

• Snickers galaxy

A scientific theory...

• is based on lots of evidence
• is not valid
• is not reliable
• has not been tested many times

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Which statement is true?

• The galaxies are moving toward us.

• The galaxies are moving away from us.

• The universe remains static or unchanged in motion.

• None of the above

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NGSS.HS-ESS1-2

Scientists theorize that the portion of the universe visible today expanded explosively from a hot, dense mass about 14 billion years ago. What is evidence for this “big bang”?

• tides on Earth caused by the big bang’s gravitational forces

• volcanoes on Venus, which erupt because of the force of the “big bang”

• cosmic background radiation, which is energy left over from the big bang

• the formation of black holes caused by the collapse of very hot dense massive stars

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NGSS.HS-ESS1-2

Astronomers examine the spectra of a distant galaxy and see that it displays a red shift. What does this mean about the motion of the galaxy?

• The galaxy is not moving.

• The galaxy contains mostly red giant stars.

• The galaxy is moving towards Earth.

• The galaxy is moving away from Earth.

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NGSS.HS-ESS1-2