The least dense layer of Earth is the

The Earth has layers because of different

1. The thinnest layer of Earth is the

• Crust
• Mantle
• Outer Core
• Inner Core

2. The layer of Earth that is composed of molten rock is the

• Crust
• Mantle
• Outer Core
• Inner Core

3. The solid iron and nickel ball that constantly rotates is the

• Crust
• Mantle
• Outer Core
• Inner Core

4. The outer core is composed of

• Solid Iron and Nickel
• Liquid Iron and Nickel
• Molten Rock
• Solid Rock

5. This layer is composed of solid rock.

• Crust
• Mantle
• Outer Core
• Inner Core

6. The force of the hot magma rising and cool magma sinking causes the plates to constantly move. This process of hot fluid rising and sinking is called

• Radiation
• Density
• Convection
• Gravity

7. When two plates collide, mountains are formed over millions of years. This plate boundary is called a ___ boundary.

• Transform
• Divergent
• Convergent

8. When two plates move apart from one another, magma rises and new crust is formed. This plate boundary is called a __ boundary.

• Transform
• Divergent
• Convergent