命令简介
Describe the major parts of the Earth.
If you journeyed to the center of the Earth, What do you think you would see along the way?
Crust
The thinnest most outer layer of the Earth
It is composed of.
Oxygen
Irons
Potassium
Calcium
Sodium
Silicon
7Aluminum
Magnesium
9 Made up of 3 types of solid rocks.
10 Igneous: Hot liquid, rocks deep with in the Earth, that cools and hardens as it reaches the surface.
11 Sedimentary: When sediments (small places of rocks, sound, other materials) are pressed and cemented together by the weight of layers that build up over time.
Metamorphic
13 Igneous and sedimentary rocks are changed by hear pressure. Other chemicals
14 The Earth's crust forms the upper part of the lithosphere.
Lithosphere ranges from 50 to 100KM thick.
16 The crust depth extends 8 to 3KM.
What is the Earth is crust?
Where is the mantle located?