Group 5 science annual project presentation

In school, my group has made another video about electromagnet. You can click the link below:http://youtu.be/BvLSq_Uy2hg

structure of the earth

Today I'm going to tell you about the structure of the earth. Here are three main layers of the Earth:
-crust
-mantle
-core

CRUST
The crust is the thinnest, top layer of the Earth. It's thickness is about 0 to 50km. The crust was made out of plates.

MANTLE
 The mantle was the thickest layer of the Earth. It's thickness was 2900km. The mantle was made out of rocks in the molten state. Mantle was beneath the crust.

CORE
The core was the innermost layer of the Earth. The core was made out of solid iron & nickle. It's stay in solid form because of the temperature. The core is hot, which causes the molten rocks in the mantle into liquid state.

For more info, click the link below:
http://youtu.be/3qMSUVOjvXk