Crust

1
Crust

• Earth's outer layer includes the rock of the
  ocean floor and large areas of land

2
Mantle

• The thickest layer of Earth found just below the
  crust
•                                        

3
Core
The dense center of Earth a ball made mostly of
two metals, iron and nickel
                                       
4
Plates

• Continent-sized slab of Earth's crust and upper
  mantle

5
earthquake

• A vibration, or shaking, of Earth's crust

6
fault

• A break in Earth's crust along which rocks move .

7
focus

• The point underground where the movement of an
  earthquake first took place

8
epicenter

• The point on the surface of Earth that is right
  above the focus of an earthquake.

9
seismograph

• An instrument that records earthquake waves .

10
volcano

• A mountain that forms when red-hot melted rock
  flows through a crack onto Earth's surface.

11
magma

• Melted rock inside Earth.

12
lava

• A melted rock that reaches Earth's surface

13
vent

• The rocky tube in a volcano through which magma
  rises toward the surface.

14
magma chamber

• An underground pool below a volcano that holds
  magma

15
crater

• A large basin formed at the top of a volcano when
  it falls in on itself.