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Geology > Cosmology > Flashcards

Cosmology Flashcards

1
Q

Who created the expanding universe theory?

A

Edwin Hubble

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2
Q

What is the expanding universe theory?

A

Galaxies move away from earth based on light spectra emission

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3
Q

What is a red shift doppler effect?

A

As a star moves away, wavelength of light increases

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4
Q

What is a blue shift Doppler effect?

A

As a star moves toward the observer, wavelength of light is decreased

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5
Q

What is evidence for the big bang?
(3 answers)

A
  1. The expanding universe theory
  2. Cosmic background radiation
  3. The universe primarily consists of the lighter elements
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6
Q

What is cosmic background radiation?

A

Microwave radiation leftover from the big bang

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7
Q

What is nebulae?

A

Molecules accumulated when universe is cool enough, primarily consisting of hydrogen & helium

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8
Q

What is differentiation?

A

” Sorted “ material in Earth’s layers

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9
Q

Which denser materials sink?

A

Fe & Ni ( iron & nickel )

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10
Q

Which less dense materials float?

A

Ca, K, Al, Na, O, & Si (calcium, potassium, aluminum, sodium, oxygen, & silicate

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Geology (3 decks)

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