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GEO1009F > Cosmology & the Birth of the Earth > Flashcards

Cosmology & the Birth of the Earth Flashcards

1
Q

Solar System

A

Form within a nebula

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2
Q

Nebula

A

vast swirling cloud of gas and dust floating in space

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3
Q

Volatile Materials

A

melt/vaporize at low temperatures

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4
Q

Refractory materials

A

melt/vaporize at high temperatures

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5
Q

Accretionary disk

A

rotating disk that was once a nebula that forms as matter pulls it together

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6
Q

Proto-planetary disk

A

region that remained outside proto-sun

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7
Q

Proto-sun

A

mass that eventually moved to center of disk into a large ball

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8
Q

Solar wind

A

cleared inner proto-planetary disk of most volatiles leaving behind refractory elements

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8
Q

Planetesimals

A

within a ring, particles of dust & ice stuck together to form larger masses

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9
Q

Chondritic meteorite

A
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9
Q

Mantle

A

the thick layer of rock below the Earth’s crust and above the core

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10
Q

Moon

A
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10
Q

Proto-Planet

A

forms when planetesimals become several hundred-thousand kms in diameter

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10
Q

Proto-earth

A

consisted mostly of refractory ——

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10
Q

Differentiation

A
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GEO1009F (7 decks)

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