Earth's structure

Question 1

What is the first layer of the Earth and how thick is it?

Answer 1

The crust which is 10-70 km thick
The solid outer part of the Earth

Question 2

What is the second layer of the Earth and how thick is it?

Answer 2

The mantel is 2800 km thick
Hot Molten rock under the crust

Question 3

What is the third layer of the Earth and how thick is it?

Answer 3

The outer core is 2250 km thick
The outer center part of the Earth

Question 4

What is the fourth layer of the Earth and how thick is it?

Answer 4

The inner core is 1250 km thick
The inner center part of the Earth

Question 5

What is the continental crust?

Answer 5

-The part of the crust that is formed by continents.
-It is about 30 km thick.
-It is made up of silica-rich rocks like granite.
-It makes up 40% of the Earth’s crust

Question 6

What is the oceanic crust?

Answer 6

-The part of the Earth that is formed by oceans.
-It’s less than 10 km thick
-It is made up of magnesium-rich rocks like Basalt.