Earth's Layers

The core consists mainly of

• iron
• magnesium
• silicon
• oxygen

The mantle is denser than the crust because it contains more

• iron
• magnesium
• silicon
• oxygen

The rigid layer made up of the crust and the upper mantle

• asthenosphere
• crust
• lithosphere
• mesosphere

The layer made of semi-solid rock that slowly flows

• asthenosphere
• crust
• lithosphere
• mesosphere

The lower part of the mantle

• asthenosphere
• crust
• lithosphere
• mesosphere

The order of the layers of the earth from the surface to the center is: (as if you are digging a hole)

• asthenosphere, crust, lithosphere, mesosphere, outer core, inner core
• lithosphere, asthenosphere, mesosphere, outer core, inner core
• crust, mesosphere, outer core, inner core, lithosphere, asthenosphere
• lithosphere, asthenosphere, mesosphere, inner core, outer core