Earth Convection Currents

Convection in the Earth

Multiple Choice

What is the heat source for convection in the mantle?

• the Crust
• the Mantle
• the Core

Multiple Choice

Which of the following is one reason Earth's tectonic plates to move?

• energy from the Sun

• magnetic Pole Reversal

• convection currents in the mantle

• faults in Mountain Ranges

Multiple Choice

Molecules that are more dense than the surrounding particles will...

• rise up
• sink down
• stay put

Multiple Choice

When molten  material is cooled in the mantle the molecules

• expand (spread out)
• condense (shrink together) 
• stay the same

Multiple Choice

When molten  material is heated in the mantle the molecules

• expand (spread out)
• condense (shrink together) 
• stay the same

Multiple Choice

When molten  material is cooled in the mantle it becomes

• more dense
• less dense 

Multiple Choice

When molten  material is heated in the mantle it becomes

• more dense
• less dense 

Multiple Choice

 Where do convection currents happen in the model we are studying?

• the Crust
• the Mantle
• the Core

Multiple Choice

What is the cooling source for convection in the mantle?

• the Crust
• the Mantle
• the Core

Open Ended

How does this video relate to convection in the Earth?

Multiple Choice

How have scientists been able to study Earth's mantle?

• In some places, Earth's crust thins enough to see mantle.

• Earth's surface heat warms the crust turning it into mantle.

• Cooling crust material becomes mantle over time.

• In some places, mantle rock pushes to Earth's surface.

Multiple Choice

Pressure ______________________ as you go deeper into the Earth

• increases
• decreases 
• goes up or down depending on the layer
• stays the same

Multiple Choice

Temperature _____________________ as you go deeper into the earth.

• increases
• decreases
• goes up and down depending on the layer
• stays the same

Multiple Choice

What is the rigid layer of the Earth's surface made up of the  crust and upper mantle called?

• asthenosphere
• lithosphere
• mesosphere
• continental crust

Multiple Choice

What layer is shown by letter C?

• Crust
• Mantle
• Outer core
• Inner core

Multiple Choice

What layer is shown by letter B?

• Crust
• Mantle
• Outer core
• Inner core

Multiple Choice

What layer is shown by letter A?

• Crust
• Mantle
• Outer core
• Inner core

Multiple Choice

How does temperature change as you move from the crust to the core?

• it gets cooler
• it gets hotter
• it stays the same
• the core is frozen

Multiple Choice

The crust and the uppermost mantle make up the solid layer of hard rock called the

• inner core
• asthenosphere
• lithosphere
• outer core

Multiple Choice

The soft layer of rock in the mantle that can act like a liquid and a solid is called the

• core
• asthenosphere
• lithosphere
• crust

Multiple Choice

Which layer of the earth is a pure liquid?

• crust
• mantle
• outer core
• inner core

Multiple Choice

Earth's inner core is

• a layer of hot rock
• a solid ball of iron and nickel
• a layer of liquid iron and nickel
• a layer of rock that forms Earth's outer skin
  

Multiple Choice

What is the correct order (starting from the surface) of Earth's layers?

• crust, mantle, inner core, outer core
• mantle, outer core, inner core, crust
• inner core, outer core, mantle, crust
• crust, mantle, outer core, inner core

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