Structure of the earth

What is the correct order (starting from the surface) of Earth’s layers?

• crust, outer core, inner core, mantle
• mantle, outer core, inner core, crust
• crust, mantle, outer core, inner core
• outer core, inner core, crust, mantle

The innermost layer of the earth is _______.

• The thickest layer

• Made of nickel and iron

• Solid

• All of the above

Which layer is layer 1?

• Core
• Mantle
• Crust
• Mesophere

Which layer is layer 4?

• Core
• Mantle
• Crust
• Mesophere

Which layer is layer 2?

• Core
• Mantle
• Crust
• Mesophere

Inner core

• Thick layer of slow moving rock 
• Thin, rocky layer
• Layer of Solid Metal 
• Layer of flowing liquid metal 

Which layer of the Earth is the thickest?

• Core
• Crust
• Mantle

Which rock is most dense?

• Granite
• Limestone
• Basalt
• Shale

The pieces of the lithosphere that move around on top of the asthenosphere are called

• continents.
• mesospheres. 
• crust
• tectonic plates.

Which layer of the Earth is the least dense?

• Crust
• Inner core
• Mantle
• Outer core