Structure of the Earth

Question 1

How many layers is the Earth made up off?

Answer 1

4 distinct layers.

Question 2

Name the 4 layers.

Answer 2

The inner core.
The outer core.
The mantle.
The crust.

Question 3

What is the inner core?

Answer 3

The centre and the hottest part of the Earth.

Immense heat energy its like the engine room of the Earth.

Question 4

What is the inner core made up of?

Answer 4

Solid iron and nickel with temperatures of up to 5,500C.

Question 5

What is the outer core?

Answer 5

Layer surrounding the inner core.

Extremely hot, temperatures similar to inner core.

Question 6

What is the outer core made up of?

Answer 6

Liquid layer made from Iron and nickel.

Question 7

What is the mantle?

Answer 7

The widest section of the Earth.

Question 8

What is the mantles diameter?

Answer 8

Approximately 2,900 km.

Question 9

What is the mantle made up of?

Answer 9

Semi-molten rock called magma

Question 10

What is there in the upper part of the mantle?

Answer 10

The rock is hard.

Question 11

What is there in the lower part of the mantle?

Answer 11

Rock is soft and it begins to melt.

Question 12

What is the crust?

Answer 12

The outer layer of the Earth.
Thin layer between 0-60 km thick.
Solid layer in which we live upon.

Question 13

Name the two different types of crust?

Answer 13

Continental crust.

Oceanic crust.

Question 14

What does continental crust carry?

Answer 14

The land.

Question 15

What does oceanic crust carry?

Answer 15

Water.

Question 16

Describe the layers of the Earth.

Answer 16

Inner core - middle of the Earth.
Outer core - surrounds the inner core.
Mantle - Widest layer around outer core.
Crust - Thick crust we live on.

Question 17

How many large tectonic plates does the Earth consist of?

Answer 17

7 and several smaller ones.

Question 18

Why is the Earth’s crust unstable?

Answer 18

The plates ate moving in response to convection currents within the mantle.