5.4 Test: Evidence for the Big Bang

When viewing the light spectra from galaxies, we observe that for almost all of them, their light is _______________ showing that they are moving away from us and suggesting the universe is expanding.

• A. dimming

• B. brightening

• C. blueshifted

• D. redshifted

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NGSS.HS-ESS1-2

Which of the following is NOT a characteristic of the Cosmic Microwave Background Radiation (CMB)?

• A. It is detected in every direction in the universe.

• B. It is the remnant heat from the early universe, about 380,000 years after the Big Bang.

• C. It is in the ultraviolet range of wavelengths in the electromagnetic spectrum.

• D. It has a temperature just above absolute zero.

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NGSS.HS-ESS1-2

What characteristic of the Cosmic Microwave Background Radiation (CMB) provides evidence that the universe is expanding?

• A. The wavelength of the CMB has been squeezed to shorter wavelengths (blueshifted).

• B. The CMB is a measured force which is pushing the galaxies further away from each other.

• C. The wavelength of the CMB has been stretched to longer wavelengths (redshifted).

• D. The CMB shows us what the universe was like before the universe rapidly expanded.

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NGSS.HS-ESS1-2

What does the Cosmic Microwave Background Radiation (CMB) represent in the timeline of the early universe?

• The CMB marks the time when the universe cooled enough for atoms to form, allowing light to travel freely through space.

• The CMB marks the time when galaxies first formed and began emitting large amounts of light.

• The CMB originated when the first massive stars in the universe began exploding as supernovas shortly after the Big Bang.

• The CMB marks the moment when gravity along with all other fundamental forces in the universe were unified.

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NGSS.HS-ESS1-2

What is the approximate abundance of elements in the universe, as predicted by the Big Bang Theory?

• 75% hydrogen, 25% helium, trace amounts of lithium and other elements

• 75% hydrogen, 25% helium, no other elements

• 79% nitrogen, 21% oxygen, trace amounts of argon and other elements

• 75% helium, 25% carbon, trace amounts of iron and other elements

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NGSS.HS-ESS1-2

Which galaxy would be the furthest away from the Earth?

• Galaxy A

• Galaxy B

• Galaxy C

• Galaxy D

Which galaxy would be moving away from the Earth with the slowest velocity?

• Galaxy A

• Galaxy B

• Galaxy C

• Galaxy D

Tags

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

NGSS.HS-PS4-3

Match the scientist to the discovery or idea they had:

• Albert Einstein

• Had the idea that the universe began as a "primeval atom".

• Edwin Hubble

• Observed more galaxies outside of the Milky Way and most galaxies are moving away from Each other.

• Georges Lemaître

• Came up with the name "Big Bang" in an attempt to make fun of the theory.

• Fred Hoyle

• Came up with the Theory of General Relativity which implied the universe is expanding.

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NGSS.HS-ESS1-2