A theory that says the universe began as a small point that expanded rapidly about 13.7 billion years ago.

• Big Bang Theory

• Singularity Theory

• Galaxy Theory

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NGSS.HS-ESS1-2

A large grouping of stars, planets, gas, and dust in space held together by gravity.

• Universe

• Galaxy

• Space

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NGSS.MS-ESS1-2

The change in wavelength that allows us to determine if an object if moving toward us or away from us

• Whiteshift and Blueshift

• Redshift and Greenshift

• Redshift and Blueshift

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NGSS.HS-ESS1-2

NGSS.HS-PS4-1

Which description is considered most accurate regarding what actually happened during the Big Bang?

• Two galaxies collided causing an immense explosion as stars crashed into one another

• All of what would become the universe was concentrated in a single small point, or singularity, which rapidly expanded into what is now stars, planets, galaxies, matter, and energy.

• All matter emerged from a massive black hole at the center of the universe.

• Parts of the sun were ripped off by massive internal explosions and were thrown into space where they cooled to become other things, like plants, comets, and other galaxies.

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NGSS.HS-ESS1-2

Observations of space indicate that most matter in the universe is ___.

• hydrogen and helium

• gold and plutonium

• oxygen and water vapor

• carbon

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NGSS.HS-ESS1-2

What can we conclude from the observation that nearly all galaxies are moving away from us?

• Massive black holes are drawing galaxies away from Earth.
• The Sun and Earth are located at the center of the universe.
• Everything in the universe is moving the same direction.
• The once-smaller universe is expanding in all directions.

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NGSS.HS-ESS1-2

Galaxies that are REDSHIFTED are:

• actually BLUE

• really NEAR earth

• invisible or not visible

• moving AWAY from us.

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NGSS.HS-ESS1-2

A galaxy showing BLUE SHIFT is ___.

• very cold

• moving TOWARDS OR TO us

• dying

• about to supernova

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NGSS.HS-ESS1-2

The CMB (Cosmic Background Radiation) is:

• the remaining energy from the big bang.

• incredibly cool.

• a cloud of light

• only located in certain places in the universe.

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NGSS.HS-ESS1-2

What are two important pieces of evidence we have for the Big Bang?

• Ptolemy’s work on epicycles and Hubble’s law (the expansion of the Universe)

• Doppler Effect (the redshifting of the Universe) and cosmic background radiation

• The fact that we have multiple Universes to compare and study and cosmic background radiation (CBR)

• The abundance of hydrogen, helium, and lithium found in the Universe and Ptolemy’s work on epicycles

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NGSS.HS-ESS1-2