Answer:
crust- is a solid layer of rock on the surface of the planet.The thickness varies between 3 and 30 miles
mantle-is a semi-liquid layer of magma.Or molten rock,that moves due to convection current.
inner core-isnthe solid part at the center of the earth.It is made of iron and nickel and has temperatures reaching 5,500*c.
outer core-the liquid part of the core which has a similar composition to the inner core.
