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Unit 2: Astronomy and Earth's Layers and Compostion
Astronomy and Earth's Layers and composition
5
Geology
Undergraduate 2
03/06/2014
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Term

A. What is the universe?

 

B. What is the age of the Universe?

 

 Definition

A. everything that is known to exist and detectable by any means.

 

B. 13.8 Billion years
Term
What is the most abundant element in the Universe? Why?
 Definition
Term
What is the Big Bang Theory?
 Definition
Scientific theory for the origin of the universe. This theory proposes that the universe began with a super cosmic explosion and resulting expansion from an infinitely small, infinitely hot, infinitely dense singularity (point) creating matter, space, and even time itself about 13.798 billion years ago.
Term
What evidence is there to support the Big Bang Theory?
 Definition

A. universe is expanding

B. cosmic abundance of light atomic nuclei: H, Deuterium, He, Li, Be

C. CMB- cosmic microwave background radiation: pervasive radiation left over from the Big Bang Theory itself

D. experimental creation of conditions predicted to have existed during the first three minutes after the big bang
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