Set: How does gravity affect the shape of the universe?

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With group: YHS Wooten Phys Sci
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All 10 terms

TermDefinition
What is critical density?the average density of matter that would cause cosmic expansion to stop
What are two different theories about the shape of the universe?The universe is negatively curved into a saddle shape, and if the density is equal to the critical density the universe is flat
Why don't we know any facts about the shape of the universe?because we can't get far enough away to see the actual shape of the universe
What was Einstein's theory?That the universe will eventually collapse in on itself
How many dimensions did Einstein say the universe had?3
What was the degree that Einstein said that the universe had?180 degrees
Do we have any facts on how the universe was shaped?No
If the density of the universe is less than critical density what is the shape?A saddle shape
If the density of the universe is the same as critical density what is the shape?Flat
What objects is the critical density measuring?density of galaxies
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Set Information

Terms 10
Creator DolphinLover368
Created April 3, 2008
Group YHS Wooten Phys Sci
Subjects None
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DolphinLover368 : Changed What was Einstein's theory? → That the universe will eventually collapse in on itself to That the universe will eventually collapse in on itself → What was Einstein's theory?
DolphinLover368 : Changed What is critical density? → the average density of matter that would cause cosmic expansion to stop to the average density of matter that would cause cosmic expansion to stop → What is critical density?
DolphinLover368 : Changed If the density of the universe is less than critical density what is the shape? → A saddle shape to A saddle shape → If the density of the universe is less than critical density what is the shape?
DolphinLover368 : Changed How many dimensions did Einstein say the universe had? → 3 to 3 → How many dimensions did Einstein say the universe had?
DolphinLover368 : Changed What objects is the critical density measuring? → galaxies to What objects is the critical density measuring? → density of galaxies
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Most Missed Words

  1. What are two different theories about the shape of the universe? The universe is negatively curved into a saddle shape, and if the density is equal to the critical density the universe is flat - 15 misses
  2. What is critical density? the average density of matter that would cause cosmic expansion to stop - 14 misses
  3. Why don't we know any facts about the shape of the universe? because we can't get far enough away to see the actual shape of the universe - 14 misses
  4. What was Einstein's theory? That the universe will eventually collapse in on itself - 11 misses
  5. What objects is the critical density measuring? density of galaxies - 7 misses
  6. What was the degree that Einstein said that the universe had? 180 degrees - 6 misses
  7. If the density of the universe is less than critical density what is the shape? A saddle shape - 5 misses