Characreristics Of The Earths Structure

Question 1

What are the characteristics of the earths core ?

Answer 1

Consists of iron and nickel are at temperatures of 6200°C

Inner core is solid 1250 km thick

The article is semi molten 2200 km thick

Question 2

What are the characteristics of the mantle

Answer 2

Consists of silicates rocks rich in magnesium making up 84% of the earths volume

Up to 2900 km thick with temperatures of 1000° north across them 4000° near the core

The rocks are semi molten

The asthenosphere is the upper part of the mantle at depths of 80 to 200 km although solid the rocks in the form on the pressure

Question 3

What are the characteristics of the earths crust

Answer 3

Fin out a layer of the Earth divided into the following

• Oceanic crust 6 to 10 km thick made up of the basaltic rocks composed mainly of silica magnesium known as sima
• Continental crust up to 70 km thick made up of granitic rocks composed mainly of silica and alumina know as sial

Question 4

What is the lithosphere

Answer 4

The rigid outer layer of the Earth consisting of the crust and solid outermost layer of the upper mantle

Question 5

What is the Moho discontinuity

Answer 5

The Boundry between the crust and the mantle