Earths Interior Flashcards by Joseph Clarke

Q

What shape is Earth?

A

Geoid

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Q

What cases the Earth do be this shape?

A

Centrifugal force

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Q

What is the lithosphere?

A

The solid part of the earth in the upper crust.

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Q

What is the asthenosphere?

A

The molten layer of the crust, the mantle and the inner core.

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Q

What is the crust comprised of?

A

Oceanic and continental crusts.

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Q

What rock is the continental crust made up of?

A

Sial

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Q

What rock is the oceanic crust made up of?

A

Sima

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Q

How thick is the continental crust?

A

80km

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Q

How thick is the oceanic crust?

A

20km

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Q

How hot is the crust.

A

900°c

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Q

How hot is the mantle?

A

1600°c

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Q

How thick is the mantle?

A

2900km

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Q

How hot is the outer core?

A

4000°c

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Q

How thick is the outer core?

A

2200km

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Q

How hot is the inner core?

A

5000°c-6000°c

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Q

How thick is the inner core?

A

1270km

Q

What is the mantle made of?

A

Molten rocks such as magnesium

Q

What is the outer core made of?

A

Liquid iron & nickle

Q

What is the inner core made of?

A

Solid iron & nickle