Red-shift and CMB Radiation Flashcards

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1
Q

Explain the Doppler Effect?

A

Noise sounds lower pitched when travelling away from you because it drops in frequency.

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2
Q

What does red-shift increase?

A

Wavelength

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3
Q

How does red-shift show that the Universe is expanding?

A

Dark lines on the absorption spectrum of a galaxy has been red-shifted than on Earth.

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4
Q

Which direction is cosmic microwave background radiation coming from?

A

All directions.

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