Formation of the Universe Review. observed change in the frequency of a wave when the source or observer is moving. Doppler Effect. theory that all matter and energy in the universe exploded 10 to 15 billion years ago and began expanding in all directions. Big Bang Theory. Big Bang Theory.
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a. the edges of the universe c. further back in time.
b. into other universes. d. further forward in time.
a. steady state theory c. big bang theory
b. string theory d. big crunch theory
a. red shift of galaxies
b. cosmic background radiation
c. Galactic clusters
d. abundance of light elements (H, He and Li)
a. cosmic radio waves
b. cosmic microwaves background radiation
c. gamma ray bursts
d. cosmic x-ray radiation
a. 4.6 billion years ago
b. 10 billion years ago
c. 13.7 billion years ago
d. 100 million years ago
a. dark matter c. atoms
b. dark energy d. empty space
a. hydrogen and lithium c. hydrogen and helium
b. lithium and helium d. lithium and beryllium