Convection & the Mantle

Where does the heat come from that drives this convection current in the mantle?

• the sun
• the core
• the ocean
• the mantle

Where is the temperature of the mantle material greater, at point A or point B?

• Point A
• Point B

Where is the density of the material greater, at point B or point C?

• Point B
• Point C

What causes the convection cell to turn left at point B?

• material hits the crust and is "trapped" in the current
• material is getting less dense
• material is getting hotter

What happens to the temperature and density of materials between point B and point C?

• material is getting colder and more dense
• material is getting hotter and less dense

What force causes the convection cell to turn down at point C?

• pressure
• density
• temperature
• gravity

What happens to the temperature and density of materials between point D and point A?

• material is getting colder and more dense
• material is getting hotter and less dense

What causes the convection cell to turn up at point A?

• material is getting colder
• material is getting less dense
• material is getting more dense