Layers of the Earth
Uh oh! I don't know anything about the "Layers of the Earth" and nothing about how many layers there are but luckily my website has as section of Earth Layers. Here are the most main information you should know about the "layers", there are 4 layers in the earth, the crust, the massive mantle, outer core and the solid inner core. The Crust is the thinnest layer in the earth. The Mantle is very massive (huge) if you don't get huge imagine it takes up 80% of the earth now that is huge. The outer core is made of iron and nickel. The inner core is the most inner layer it is very solid. I bet you need more information if you do just scroll down and you'll find non-confusing information.
Crust
The crust is the most outer layer of the Earth. The crust is very rigid (Hard). The crust is made of granite and basalt. The ocean basically takes up 70% of the crust. The thin rocky crust is made out of silicon, aluminum, calcium, sodium andpotassium. The crust is divided into continental plates that drift slowly every year (about a few centimeters). Just a few kilometers below your feet, its molten rock, extending to for thousands of kilometers down to the planet's super heated iron core. The entire earth's crust occupies just 1% of the earth's volume. The Earth's crust thickness is 30 km thick. The temperature of the crust is 2oo degreesCelsius(392Fahrenheit) to 400 degreesCelsius(752Fahrenheit).
Mantle
The Mantle is the second layer of the earth, it takes up 80% of the Earth. The mantle has two sections (Lithosphere and the
Asthenosphere). The temperature of thelithosphereandasthenosphereis 300 to 500 degrees celsius. The mantles temperature 4500 degrees celsius and made of 100% magma. In the mantle, convection currents occur. Theconvection currentsoccurs in the lithosphere and the asthenosphere. The mantle is very deep it is 1800- 2900 kilometers deep. A veryinteresting fact is that the mantle grows about a meter every year.
Lithosphere
The lithosphere is the upper part of the mantle. The Lithospheres temperature is about 400 degrees celsius. The lithosphere (lower mantle) is rigid part of the mantle. The lithosphere is not only part of the mantle it is the crust and the upper part of the mantle together. The depth of the lithosphere is 50-100 km thick.
Asthenosphere
The asthenosphere is the lower part of the mantle. The asthenosphere temperature is 300-500 degreesCelsius. Theasthenosphereis ductile and can be pushed and deformed like silly putty in response to the warmth of the Earth. These rocks actually flow, moving in response to the stresses placed upon them by the motions of the deep interior of the Earth. The flowing asthenosphere carries the lithosphere of the Earth, including the continents, on its back.
Convection Currents
In the mantle are "convection currents" ,which make the mantle move. The lower mantle heats up and rises and cools down then gets pushed down because it is heavier. The currents keeps on going round and round.Convection currents occur because ofdensityof a fluid is related to its temperature. Hot rocks lower in the mantle are less dense than their cooler counterparts below. The hot rock rises and the cooler rock sinks due to gravity.
Outer Core
The outer core is the third layer of the earth. The outer core surrounds theinner core. The outer core is the only liquid layer of the Earth. You could say that the outer core is basically a sea of iron and nickel. The outer core is 2100 miles and also is in a range of 200-300kilometersthick.7,200 to 9,000 degrees Fahrenheit (4,000 to 5,000 degrees Celsius).
Inner Core
The inner core is the most inner layer of the earth.The inner core contains iron, the iron in the inner core is not pure (so not just iron) scientists believe it contains sulfur and nickel and also smaller amount of other elements. The inner core isextremely hot it is somewhere between 9000 and 13000 degrees Fahrenheit (5000 and 7000 degrees Celsius).