1.) From the inner core to the crust it's 2900km, and the thickness of the crust varies, but is around 8-65km thick.
2.) Both the outer core and inner core have elements of iron and nickel in them.
3.) The name of the rock when lava cools is called obsidian, and basalt is what the actual volcanoes are made of, and are both in one of three groups of rocks, Igneous, Sedimentary, Metamorphic, and other external varieties of rocks. (Obsidian and basalt are in Igneous).
4.) All of the three types of rocks form the Earth's layers.
5.) The crust makes up only 1% of our Earth.
6.) The temperature of the inner core is hotter than the surface of the sun.
2.) Both the outer core and inner core have elements of iron and nickel in them.
3.) The name of the rock when lava cools is called obsidian, and basalt is what the actual volcanoes are made of, and are both in one of three groups of rocks, Igneous, Sedimentary, Metamorphic, and other external varieties of rocks. (Obsidian and basalt are in Igneous).
4.) All of the three types of rocks form the Earth's layers.
5.) The crust makes up only 1% of our Earth.
6.) The temperature of the inner core is hotter than the surface of the sun.