The Big Bang Theory Unit

What is a third piece of evidence that supports the Big Bang Theory?

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What is the best description of the big bang?

• A massive explosion that created everything in the universe

• Two planets collided, creating the Sun and other planets

• A rapid expansion of a densely packed, small area that expanded into the universe that we know today

• An explanation of how the universe is expanding and how big it is

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When galaxies are moving away from each other that means they have a ​ (a)   . When galaxies are moving towards each other, that means they have a ​ (b)   .

• redshift

• blueshift

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When glaxies have a redshift, they are moving ​ (a)   from eachother. As they move away from each other, they are moving ​ (b)   , and creating ​ (c)   space between galaxies.

• away

• faster

• more

Match the following terms with their definitions

• Fusion and fission are examples

• Primordial Radiation

• The entirety of all wavelengths of light waves

• Nuclear Processes

• two light nuclei combine to make a nucleus of heavier mass, resulting in the release of energy

• Light Spectra

• also known as cosmic microwave background

• Nuclear Fusion

• Transverse and longitudinal waves of energy that can transfer energy without a medium

• Electromagnetic Radiation

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The Big Bang Theory explains the formation of the...

• Earth

• Sun

• Universe

• Solar System

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The Big Bang:

• is NOT an explosion in space.

• is an expansion OF space.

• is our best explanation for the beginning of the universe.

• All of the above.

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The "afterglow" or "relic" of the energy from the origin of the universe that we see today is called _________.

• cosmic background radiation

• sunlight

• doppler effect

• cosmic explosions

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The CMB is:

• the remaining energy from the big bang.

• incredibly hot.

• visible to the human eye.

• only located in certain places in the universe.

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The universe is ____________ years old.

• 8.13 billion

• 13.8 billion

• 1.83 billion

• 381 million

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