Big Bang Theory Evidence

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What is redshift?

Back

Redshift is the phenomenon where light from an object moving away from an observer is shifted to longer wavelengths, making it appear redder.

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NGSS.HS-ESS1-2

NGSS.HS-PS4-1

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What is blueshift?

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Blueshift is the phenomenon where light from an object moving towards an observer is shifted to shorter wavelengths, making it appear bluer.

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NGSS.HS-PS4-1

NGSS.HS-PS4-3

Front

What does the Doppler Effect describe?

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The Doppler Effect describes the change in wavelength of light or sound due to the relative motion of the source towards or away from an observer.

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NGSS.HS-PS4-1

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What does the Big Bang theory suggest about the universe?

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The Big Bang theory suggests that the universe is continually expanding from an initial singularity.

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NGSS.HS-ESS1-2

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What is the significance of galaxies moving away from us?

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The movement of galaxies away from us indicates that the universe is expanding, supporting the Big Bang theory.

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NGSS.HS-ESS1-2

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What happens to the wavelength of light from an object moving away from Earth?

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The wavelength of light from an object moving away from Earth increases, resulting in redshift.

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NGSS.HS-ESS1-2

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What is the relationship between speed and redshift?

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An object moving very fast away from Earth will exhibit more redshift than an object moving slowly away.

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NGSS.HS-PS4-1

Front

What evidence supports the Big Bang theory?

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Evidence includes the observed redshift of galaxies, cosmic microwave background radiation, and the abundance of light elements.

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NGSS.HS-ESS1-2

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What is cosmic microwave background radiation?

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Cosmic microwave background radiation is the afterglow of the Big Bang, filling the universe and providing evidence of its early hot state.

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NGSS.HS-ESS1-2

Front

How does the redshift of distant galaxies relate to the expansion of the universe?

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The redshift of distant galaxies indicates that they are moving away from us, which is evidence of the universe's expansion.

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NGSS.HS-ESS1-2