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CCI02.03.03.- Dark matter: The matter we can't see

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https://youtu.be/HneiEA1B8ks
PEDRO ÁLVAREZ JIMÉNEZ
Quiz by PEDRO ÁLVAREZ JIMÉNEZ, updated more than 1 year ago
PEDRO ÁLVAREZ JIMÉNEZ
Created by PEDRO ÁLVAREZ JIMÉNEZ over 6 years ago
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Resource summary

Question 1

Question
Which was not one of the four elements the ancient Greeks believed comprised the world?
Image:
1 (binary/octet-stream)
Answer
  • Earth
  • Air
  • Spirit

Question 2

Question
When did scientists first measure the motion of groups of moving galaxies?
Image:
4 (binary/octet-stream)
Answer
  • 1900's
  • 1930's
  • 1960's

Question 3

Question
The universe's expansion seems to be ________.
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2 (binary/octet-stream)
Answer
  • Slowing down
  • Accelerating
  • Changing directions

Question 4

Question
Today's best measurements estimate that about ___% of the universe is dark matter.
Image:
1 (binary/octet-stream)
Answer
  • 13
  • 27
  • 42

Question 5

Question
String theories can explain the universe but
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5 (binary/octet-stream)
Answer
  • You cannot check them out by now
  • They can explain only the dark matter
  • Both are correct
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