Convection Currents and the Mantle

Convection Currents and the Mantle

3 Types of Heat transfer

• Radiation- transfer of heat through empty space

• Conduction- transfer of heat by direct contact

• Convection- transfer of heat involving the movement of fluids-liquids and gases

Multiple Choice

The transfer of heat by direct contact is ...

• radiation

• conduction

• convection

Multiple Choice

The transfer of heat through empty space is ...

• radiation

• conduction

• convection

Multiple Choice

The transfer of heat involving the movement of fluids-liquids and gases is ...

• radiation

• conduction

• convection

Asthenosphere

• Heat from Earth’s core and mantle cause hot columns of mantle material to rise

• Hot material spreads and forces the cooler material to sink 

Multiple Choice

What layer is the asthenosphere in?

• crust

• mantle

• outer core

• inner core

Density

A measure of how much mass there is in a volume of a substance.

Quick review of Mass and Volume

• Volume- amount of space something takes up

• Mass- amount of matter in an object

Therefore...

• Mass- how heavy/full something is

• Volume- how much space it takes up

Multiple Choice

What is density???

• the amount of mass in an object

• the amount of volume it takes up

• the amount of mass in a given volume

Quick review

Layers of the Earth

Multiple Choice

Which layer has the coolest temperatures?

• crust

• mantle

• outer core

• inner core

Multiple Choice

What is the outermost layer?

• inner core

• mantle

• crust

• outer core

Multiple Choice

Which layer has the hottest temperatures?

• crust

• mantle

• outer core

• inner core

Multiple Choice

The lithosphere is made up of what two layers

• mantle and crust

• upper mantle and crust

• lower mantle and outer core

Multiple Choice

Which statement is correct?

• As you move up through the layers, the pressure increases.

• As you move down through the layers pressure increases.

• As you move down through the layers, pressure decreases.

• As you move up down through the layers, pressure remains the same.

Multiple Choice

How many layers does the mantle have?

• 1

• 2

• 3

Multiple Choice

What layer is the asthenosphere found?

• upper mantle

• middle mantle

• lower mantle

Multiple Choice

Which layer is a solid dense ball of Iron and Nickel?

• mantle

• outer core

• inner core

Multiple Choice

Which layer is liquid Iron and Nickel?

• mantle

• outer core

• inner core

Multiple Choice

Out of all the layers, which one would be the easiest for us to drill through?

• crust

• mantle

• outer core

• inner core