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What is the Big Bang Theory?

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The Big Bang Theory is the leading explanation for the origin of the universe, proposing that it began as a singularity approximately 13.8 billion years ago and has been expanding ever since.

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What is Cosmic Microwave Background Radiation?

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Cosmic Microwave Background Radiation (CMB) is the afterglow radiation from the Big Bang, filling the universe and providing evidence for the Big Bang Theory.

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NGSS.HS-ESS1-2

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What does the term 'redshift' refer to?

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Redshift is the phenomenon where light from an object moving away from an observer shifts to longer wavelengths, indicating that the object is receding.

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What were the original two elements formed after the Big Bang?

Back

The original two elements formed after the Big Bang were Hydrogen and Helium.

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Front

What is the significance of the Doppler Effect in astronomy?

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The Doppler Effect helps astronomers determine whether an object in space is moving towards or away from us by observing changes in the wavelength of light.

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NGSS.HS-PS4-3

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How does the abundance of light elements support the Big Bang Theory?

Back

The Big Bang Theory predicts that the universe's first elements were primarily Hydrogen and Helium, and their observed abundance aligns with this prediction.

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NGSS.HS-ESS1-2

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What is the role of galaxies in supporting the Big Bang Theory?

Back

The observation that galaxies are moving away from each other supports the Big Bang Theory, indicating that the universe is expanding.

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Front

What is the significance of the Hubble's Law?

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Hubble's Law states that the farther away a galaxy is, the faster it is moving away from us, providing evidence for the expanding universe.

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NGSS.HS-ESS1-2

Front

What is the difference between redshift and blueshift?

Back

Redshift occurs when an object moves away from the observer, causing light to shift to longer wavelengths, while blueshift occurs when an object moves towards the observer, causing light to shift to shorter wavelengths.

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NGSS.HS-ESS1-2

NGSS.HS-PS4-3

Front

What evidence do we have for the Big Bang Theory?

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Evidence for the Big Bang Theory includes Cosmic Microwave Background Radiation, the abundance of light elements, and the redshift of galaxies.

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