Quiz #4 - Convection currents and Earth's Layers

What is the heat source for convection in the mantle?

• the Crust
• the Mantle
• the Core

What is the cooling source for convection in the mantle?

• the Crust
• the Mantle
• the Core

When molten  material is heated in the mantle it becomes

• more dense
• less dense 

When molten  material is cooled in the mantle it becomes

• more dense
• less dense 

This layer of Earth is solid Iron and Nickel

• Outer Core
• Mantle
• Inner Core
• Crust

Oceanic crust is made of ______

• Granite

• Basalt

• Cookies

• Water

Continental crust is made of _______

• Flowers and grass

• Basalt

• Granite

• Crust

What happens to pressure as we move from the crust to the inner core?

• Pressure Decreases
• Pressure Increases
• Nothing

Boiling Water

• Conduction

• Convection

• Radiation

Feet on Hot Sand

• Conduction

• Convection

• Radiation