1.a structure of the earth

Question 1

How thick is the crust

Answer 1

50-70km thick

Question 2

what is the crust also known as ?

Answer 2

The lithosphere

Question 3

Crust extra facts

Answer 3

ontinental crust - land masses
Oceanic crust - beneath the ocean
Solid but can be brittle

Question 4

How thick is the mantle

Answer 4

2,900km

Question 5

Temperature of the mantle

Answer 5

1,000 - 3,7000 *c

Such high temperature causes convection currents - move deep mantle to shallower parts

Question 6

What is the ade of ?

Answer 6

Magnesium, iron , silicon and oxygen → silicate rocks

Question 7

Extra mantle facts

Answer 7

• Semi-molten in state (where magma is)
  *Such high temperature causes convection currents - move deep mantle to shallower parts

Question 8

What is the aesthenosphere?

Answer 8

Part of the upper mantle
**100-300 km down is asthenosphere → semi molten or viscous is capable of flowing slowly **

Question 9

What is the mesosphere >

Answer 9

( harder and stronger) (most of the mantle) the mantle and the core mantle

Question 10

What is the temperature of the outer core?

Answer 10

4,400*c

Question 11

Extra facts outer core

Answer 11

• Less pressure
• Iron and Nickel
• More liquideous ( semi- molten)

Question 12

How thick is the inner core?

Answer 12

Radius 1,220 KM

Question 13

Temperature of the inner core

Answer 13

6000*c

Question 14

What is the outer core made of

Answer 14

iron and nickel

Question 15

What is the inner core made out of

Answer 15

iron and nickel

Question 16

Is the inner core more solid then the outer?

Answer 16

Yes

Question 17

What is continental crust made out of?

Answer 17

Silicon
Granite
Aluminium

Question 18

What is the oceanic crust made out of ?

Answer 18

Basalt
Silicone
Magnesium

Question 19

Is continental or oceanic crust more dense?

Answer 19

Oceanic crust as The chemical composition of oceanic crust results in a denser material when compared to continental crust

Question 20

Which plate suburges beneath the other?

Answer 20

The oceanic crust is much more dense so sinks below the continental crust

Question 21

How thick is the continental crust approximately?

Answer 21

70km

Question 22

How thick is the oceanic crust approximately?

Answer 22

6-10km