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.

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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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

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