Layers of the Earth
1. The Earth’s radius is about 4,000 miles.
2. The deepest mines on earth are only 2.5 miles deep.
3. Geologist have taken core samples only up to 7 miles deep in the earth.
Websites used: http://science.nationalgeographic.com/science/earth/inside-the-earth/http://www.kidsgeo.com/geology-for-kids/0019-inside-of-earth.php
Crust:The crust of the earth is the outside layer. This is the layer where we live. It is 5-25 miles deep. The crust is thicker under the continents than it is under the ocean. It would be the shell of a hard-boiled egg.
Can you dig a hole through the earth to get to China?
No, the layers of the earth are made of solid or extremely hot rock making it impossible to dig all the way through.
Mantel:The next layer of the earth is called the Mantel. It is about 1,800 miles thick and made of solid heated rock. 85% of the earths weight comes from the Mantel. It would be the white part of a hard-boiled egg.
Inner Core:The very center of the Earth is the Inner Core. It is made of iron and nickel. It is 900 miles thick. It is tremendously hot with temperatures between 9,000-13,000 degrees Fahrenheit. The pressure in the Inner Core is so high the iron can’t melt even in the extreme heat. The Inner Core would be the inside of the yellow part of a hard-boiled egg.
Outer Core: The Outer Core is the third layer of the Earth. It is 1,400 miles thick and super hot. The temperature in the outer core is anywhere between 7,200-9,000 degrees Fahrenheit. The outer core is mostly made from liquid iron. If the yellow part of a hard-boiled egg had two parts the outer core would be the outside part.