Dark Energy Dark Matter

Dark matter is a theoretical substance. What does this mean?

• Scientists have simply guessed that it exists

• There is evidence for its existence, but it hasn't been proven

• Scientists are certain that it exists

• Scientists are split 50/50 over whether it exists or not

What caused Fritz Zwicky to come up with the theory of dark matter?

• He saw a galaxy cluster moving away from earth at a rapid rate of speed

• He saw a galaxy cluster moving toward earth at a rapid rate of speed

• He saw a galaxy cluster breaking apart at a rapid rate of speed

• He saw that galaxy clusters were gravitationally bound even though they didn't appear to have enough mass to do so.

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How would dark matter be different from the stars and planets we can see?

• It wouldn't reflect light

• It wouldn't emit radiation

• It wouldn't interact with the electromagnetic spectrum

• All of these

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In relation to us, most galaxies are…

• Approaching
• Receding
• Motionless

Why do scientists think there is dark matter?

• Galaxies are not shaped like they should be.
• Galaxies are spinning too fast.
• Galaxies are spinning too slow.

Which of the following supports the idea of dark matter?

• Many instances of detected WIMPS
• Dark blobs seen around galaxies.
• Lensing of light around galaxy clusters.

What do the initial moments after the Big Bang have in common with the universe as it exists now? 

• all the stars, galaxies, and planets that exist today were formed just a few moments after the Big Bang
• The universe back then could not sustain life, and it cannot sustain life now
• the universe was extremely hot then, and it is still extremely hot not
• the universe began expanding then, and it is still expanding today

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Which of the following is evidence of the Big Bang Theory?

• Cavemen heard a loud bang at the beginning of time.
• The universe isn't moving
• The universe is expanding
• The universe is getting smaller

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NGSS.HS-ESS1-2

Which statement best describes the age of our solar system and universe?

• Our solar system and the universe are estimated to be 5 billion years old.

• Our solar system and the universe are estimated to be 10 billion years old.

• Our solar system is at least twice as old as the universe.

• The universe is roughly 14 billion years old.

Who found out that galaxies are moving away from us and the universe is expanding?

• Arno Penzias

• Edwin Hubble

• Henrietta Swan Leavitt

• Robert Wilson