8.ESS1.1

Front

What is the Big Bang Theory?

Back

The Big Bang Theory is the scientific explanation for the origin of the universe, stating that it expanded from a single point and is still expanding today.

Tags

NGSS.HS-ESS1-2

Front

What does redshift indicate about a star or galaxy?

Back

Redshift indicates that a star or galaxy is moving away from us.

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NGSS.HS-ESS1-2

Front

What happens to spectral lines when a star moves towards an observer?

Back

The spectral lines are shifted towards the blue light.

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NGSS.HS-ESS1-2

NGSS.HS-PS4-1

Front

What is the significance of redshift and blueshift?

Back

Redshift and blueshift are changes in wavelength that help determine if an object is moving towards or away from us.

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Front

What has been the trend of the universe since its beginning?

Back

The universe has been expanding since its beginning.

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NGSS.HS-ESS1-2

Front

What is cosmic background radiation?

Back

Cosmic background radiation is the afterglow of the Big Bang, filling the universe and providing evidence for the Big Bang Theory.

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NGSS.HS-ESS1-2

Front

What does it mean if a galaxy shows a blueshift?

Back

A blueshift means that the galaxy is moving towards us.

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NGSS.HS-ESS1-2

Front

How does the Doppler effect relate to light?

Back

The Doppler effect describes how the wavelength of light changes based on the motion of the source relative to the observer.

Tags

NGSS.HS-PS4-1

Front

What is the relationship between the distance of galaxies and their redshift?

Back

The greater the distance of a galaxy, the more redshifted its light appears, indicating it is moving away faster.

Tags

NGSS.HS-ESS1-2

Front

What is the observable universe?

Back

The observable universe is the part of the universe that we can see and measure, limited by the speed of light.