5.4 Big Bang Theory Review

Explains how the universe began and how it has expanded since:

• Big Bang Theory

• Theory of General Relativity

• Heliocentric Theory

• Solar Nebular Theory

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The point in the very early universe where everything was condensed into an infinitely dense and small state:

• Black Hole

• Cosmic Microwave Background (CMB)

• Singularity

• Inflation

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Mark on the thermometer what would be about the temperature of the Cosmic Microwave Background Radiation:

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NGSS.HS-PS3-2

The evidence that the light spectra for almost all observable galaxies is redshifted gives us evidence of:

• a shrinking universe

• an expanding universe

• a static universe

• the presence of black holes

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The Cosmic Microwave Background Radiation is evidence that supports the idea that the early universe must have been very​ ​​ (a)   .

• hot and dense
• cold and dense
• hot and sparse
• cold and sparse

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The abundance of light elements in the universe today provides us evidence that the elements _______________________ could have formed in a hot, dense early universe.

• hydrogen & carbon

• uranium & plutonium

• nitrogen & oxygen

• hydrogen & helium

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The Cosmic Microwave Background Radiation can be detected _____________.

• coming from all directions

• coming from one direction

• only at night

• only from Earth

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Since the Big Bang occurred, what has decreased over time?

• Amount of energy

• Temperature

• Amount of matter

• Size

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Match the scientist to the discovery or idea they had:

• Albert Einstein

• Observed more galaxies outside of the Milky Way and most galaxies are moving away from Each other.

• Georges Lemaître

• Had the idea that the universe began as a "primeval atom".

• Fred Hoyle

• Proposed the idea that the universe initially expanded faster than the speed of light, called inflation.

• Edwin Hubble

• Came up with the name "Big Bang" in an attempt to make fun of the theory.

• Alan Guth

• Came up with the Theory of General Relativity which implied the universe is expanding.

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These TWO scientists had the idea that the elements hydrogen and helium were created in the beginning moments of the Big Bang and correctly predicted the abundance of those elements:

• George Gamow

• Arno Penzias

• Ralph Alpher

• Robert Wilson

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