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10.3 - The Great Expansion
By Paul Fischer
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Last updated over 2 years ago
12 questions
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Question 1
1.
In your own words, explain and describe
ONE
of the three main pieces of evidence we have for the Big Bang.
Question 2
2.
Select all phrases that make the sentence true:
Light from an object moving away from us appears to have __________________
red shifted
a longer wavelength
blue shifted
a shorter wavelength
Question 3
3.
Within our local group of galaxies, they ________________
move away from us
don't obey the Doppler effect
move towards us
follow the Doppler effect
Question 4
4.
What states that "The rate at which astronomical objects move apart from each other is proportional to their distance from each other."
Question 5
5.
The process where protons and neutrons combine to produce atomic nuclei is called ___________
Question 6
6.
What percentage of all the atoms in the universe are Helium and Hydrogen?
Question 7
7.
Select all the statements that are true.
What does The Cosmological Principle tell us?
It tells us that the Big Bang occured and that all of what we observe and test confirms this theory
It states that the Universe has no center or edges - it is the same throughout.
It tells us that matter in the Universe is homogeneous (uniform density) and isotropic (the same in all directions).
It means that through matter creation the cosmos was born into being
Question 8
8.
The Big Bang was a giant explosion.
True
False
Question 9
9.
What were the 4 new forces of the Universe that were acting under different rules?
weak nuclear force
force of explosions
strong nulcear force
gravity
time
electromagnetic force
Question 10
10.
What Era occurs at only 1 second since the beginning of everything?
Question 11
11.
When the hydrogen gas clumped together after millions of years and gravity put it under great pressure ____________ began.
nucleosynthesis
gravity
fusion
electromagnatism
Question 12
12.
Why don't we know about the EXACT moment of the Big Bang?