ES 9.4 Formative

What causes plate motions?

• convection currents in the mantle

• convection currents in the crust

• ocean currents

• rotation of the Earth's core

Tags

9-12-ESS1.C-5

What is the MAIN source of heat that powers convection currents in the mantle?

• energy released by radioactive isotopes in the mantle

• heat from the core

• magma sinking from the crust

• subduction

Tags

9-12-ESS1.C-5

When gravity pulls dense oceanic lithosphere down into the deep mantle, it is called ________

• slab pull

• ridge push

• convection

• mantle plume

Tags

9-12-ESS1.C-5

When oceanic lithosphere slides down the asthenosphere that is elevated near mid-ocean ridges, it is called ________

• slab pull

• ridge push

• convection

• mantle plume

Tags

9-12-ESS1.C-5

Scientists believe that most upwelling of mantle rock occurs in the form of ________, which are rising columns of hot mantle rock.

• slab pull

• ridge push

• convection

• mantle plumes

Tags

9-12-ESS1.C-5

What would you call the process occurring at location A in the diagram?

• mantle plume

• slab-pull

• ridge-push

Tags

9-12-ESS1.C-5

What would you call the process occurring at location B in the diagram?

• mantle plume

• slab-pull

• ridge-push

Tags

9-12-ESS1.C-5

What would you call the process occurring at location C in the diagram?

• mantle plume

• slab-pull

• ridge-push

Tags

9-12-ESS1.C-5