Origin of the Universe

Which period is characterized by the formation of stable and electrically neutral environment, absence of stars and the Hydrogen gas did not allow visible light to move around?

• quark era

• hadron and lepton era

• nucleosynthesis

• dark ages

The satellite WMAP was able to determine the age of the universe — about 13.7 billion years old.

• True

• False

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NGSS.HS-ESS1-2

Light was unleashed in the universe about 300,000 years after the Big Bang.

• True

• False.

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The term big bang refers to _______________.

• The origin of the universe

• The ultimate fate of the universe

• A supernova explosion

• The formation of a quasar

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Cosmic Microwave Background Radiation (CMBR) is the term used to describe the residual microwave radiation observed everywhere in the universe that seems to have no single source. The observation of CMBR is used as evidence of the Big Bang Theory because it is believed to be -

• the result of collisions between neighboring galaxies.

• particles of dust that have absorbed radioactivity.

• radiation left over from the rapid expansion of matter.

• light energy emitted from the source of the Big Bang.

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Which of these are theories of the origin of the universe?

• Big Bang Theory

• Heliocentric Model

• Steady State Theory

• Red Shift

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As part of the Big Bang Theory of the formation of the universe, scientists believe that over time, the universe is continually changing in what characteristic?

• From more dense to less dense

• From rotating to stationary

• From cooler to hotter

• From very large to very small

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All the stars we observe from Earth emit light that is shifted, to varying degrees, to longer wavelengths. This evidence is used to support the Big Bang Theory because it shows that stars we observe -

• are all older than our Sun.

• are made up of helium gas.

• use nuclear fusion to make light.

• are moving away from us.

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Space and all the matter & energy in it

• Space

• Universe

• Earth

• Milky Way

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NGSS.HS-ESS1-3

How does Cosmic Microwave Background Radiation support the Big BangTheory?

• Microwaves are found everywhere in the universe.

• Microwaves occurred at the time of the Big Bang

• Microwaves are useful in our everyday lives

• Only A & B

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