•Lithosphere

Question 1

What layers is the lithosphere composed of?

Answer 1

The crust and upper mantle

Question 2

What are the layers of oceanic crust?

Answer 2

Ocean water
Sediment ooze
Pillowed basalt
Sheeted dolerite
Gabbro
Layered peridotite

Question 3

What are the properties of the upper continental crust?

Density and composition

Answer 3

It has a density of 2.7gcm-3

It is composed of all rock

Question 4

What are the properties of the lower continental crust?

Density and composition

Answer 4

It has a density of 2.8gcm-3

It is composed of schist, gneiss and granite

Question 5

What are the features of the surface of a continental crust

Answer 5

Continental slope
Continental shelf
Craton- old eroded crust
Fold mountains/ young orogenic belt

Question 6

What are the properties of the upper mantle?

density/ composition/ position

Answer 6

Density is 3.5gcm-3

Composed of solid peridotite

Below the MOHO

Question 7

What are the properties of the asthenosphere?

density/ composition/ position

Answer 7

Density of 3.3gcm-3

Partially (5%) molten peridotite

Below the 1300 degree line