SSC
PHYSICAL GEOGRAPHY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
How many layers make up the inside of the Earth?
|
|
Four
|
|
|
Three
|
|
|
Two
|
|
|
Five
|
Explanation:
Detailed explanation-1: -The earth is made up of three different layers: the crust, the mantle and the core . This is the outside layer of the earth and is made of solid rock, mostly basalt and granite. There are two types of crust; oceanic and continental.
Detailed explanation-2: -There is evidence that the materials within the earth form distinct layers, each with a different density. Most of this evidence comes from observations of seismic waves, the vibrations generated by earthquakes or explosions.
Detailed explanation-3: -Crust-5 to 70 km thick. Mantle-2, 900 km thick. Outer Core-2, 200 km thick. Inner Core-1, 230 to 1, 530 km thick.
There is 1 question to complete.