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Flashcards in Structure of the earth Deck (8)
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1
Q

What is the inner core?

A

A solid ball containing iron and nickel

2
Q

What is the outer core?

A

Semi-molten and contains iron and nickel

3
Q

What is the mantle most made of?

A

Silicate rocks

4
Q

What are some features of the mantle? 3

A

Part of mantle nearest the core is rigid
The layer above the part nearest to the core is called the asthenosphere and is semi-molten
Top part of the mantle is rigid

5
Q

What it the outer layer of the earth called?

A

The crust

6
Q

What is the lithosphere?

A

The rigid top part of the mantle and crust

7
Q

What are the features of continental crust? 2

A

Thicker (30-70 km thick)

less dense

8
Q

What are features of oceanic crust? 2

A

Thinner (6-10 km thick)

More dense