Earth Science Plate Tectonics Mantle Convection

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

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

• 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 

When molten  material is heated in the mantle the molecules

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

When molten  material is cooled in the mantle the molecules

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

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

• rise up
• sink down
• stay put

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

• rise up
• sink down
• stay put

Molecules that are the same density than the surrounding particles will...

• rise up
• sink down
• stay put