Earth Layers and tectonics

What are the 4 main layers of Earth?

• Land, Ocean, Lava, Sky

• Crust, Mantle, Outer core, Inner core.

• Crust Mantle, Inner core, Oceam

Which layer makes up one third of the Earth's mass?

• Earth's crust

• Mantle

• Core

What is the mantle layer?

• It is the thickest layer and makes up two thirds of Earth's mass.

• If flows slowly

• Mostly solid rocks

• All of the above

Which layer makes up the smallest percent of Earth's mass.

• Earth's crust

• Mantle

• Outer core

• Inner core

Which layer is made up of solid iron and nickel?

• Earth's crust

• Mantle.

• Outer Core

• Inner core

Which layer is made up of liquid iron and nickel?

• Earth's crust

• Mantle

• Outer core

• Inner core

Plate tectonics is a theory that Earth’s crust is divided into plates that always moving. True or False?

• True

• False

Plates are made up of only one type of crust. True or False?

• True

• False

There are two types of crust, Continental and oceanic. True or False?

• True

• False

What forms when continental plates move towards each other?

• Oceans

• Mountains

• Rift