The inner core is a solid dense ball of iron and nickel at the center of the Earth around 6,380 kilometers below the surface. Surrounding the inner core is the liquid outer core made of molten iron and nickel. The outermost layer of the Earth is the crust which ranges from 5 to 100 kilometers thick. Below the crust lies the mantle, made of silicate rock, which separates the crust from the Earth's core.
2. The ratio of the mass of a substance to the volume of the substance. Density
3. The inner core is the solid, dense center of our planet that extends from the bottom of the outer core to the center of the earth, which is about 6,380 kilo meters beneath the earth. Inner Core
4. Outer core The outer core is the liquid layer of the earths core that lies beneath the mantle and surrounds the inner core.
5. Crust The outer most layer of the earth is the crust the crust is 5 to 100 km thick.
6. P-wave A seismic wave that cause particles of rock to move in a back and forth direction.
7. S-wave A seismic wave that cause particles of rock to move in a side to side direction.
8. Asthenosphere The soft layer of the mantle on which the tectonic plates move.
9. Tectonic plates A block of lithosphere that consists of the crust and the rigid, outermost part of the mantle.
10. Convection The movement of matter due to the differences intensity the transfer of energy due to the movement of matter.
11. The Mantle The layer of rock between earth’s crust and core.
