Planet Earth

How many layers does planet Earth have?

• 2

• 3

• 4

They are called...

• rocky, melty, liquid, solid

• crust, mantle, outer core, inner core

• shell, egg white, yolk

Which layer is the thickest?

• crust

• mantle

• outer core

• inner core

Which layer is the thinnest?

• crust

• mantle

• outer core

• inner core

Can we travel inside the Earth?

• Yes

• No