Discover what's below the Earth's surface with this matching game. All the layers of the earth, from the core to the crust, are included. Do you know how hot the core is? How thin the crust is? This game helps you find out.
Which layer of the earth (crust, mantle, core) fits this description?
1. At its deepest point, this layer of the Earth is about 90 km thick, though it can be thinner than 7 km in areas under the oceans. This layer makes up only about 0.2% of the Earth's total mass.
2. The total radius of this layer is almost 3500 km. Its mass is 33% of the entire planet's. The rock is in a liquid state and consists mainly of iron and nickel. This layer is over 200 times hotter than comfortable surface temperatures!
3. All together, the sections of this layer are about 2800 km thick. The rock is fairly rigid in some areas and partially melted in others. The lava from volcanoes comes from this layer of the Earth.