Plate Tectonics Review

Which of the following is created when two oceanic plates have a convergent collision?

• New ocean seafloor

• An underwater mountain range

• A divergent boundary

• Hot spots

Which of the following causes plate movements?

• Ridge pull

• The mid-ocean ridge

• Convection currents in the mantle

• Magnetic reversal

The thin, rigid layer that forms the outermost part of the lithosphere is called Earth's

• Crust

• Inner core

• Mantle

• Outer core

Which of the following best describes a tectonic plate?

• A large slab of asthenosphere that moves over Earth's surface

• A slab of crust and upper mantle that moves over Earth's surface

• A large slab of crust where convection takes place

• A part of the atmosphere in which convection takes place

Subduction occurs when

• Mountains form

• Volcanoes form

• One plate moves underneath another plate

• Two plates move away from each other

What do scientists call the supercontinent that existed hundreds of millions of years ago?

• Landegea

• Pangaea

• Eurasia

• Panthalagea

How are oceanic and continental crust different?

• Oceanic crust is thinner and lighter than continental crust.

• Oceanic crust is thicker and lighter than continental crust.

• Oceanic crust is thinner and denser than continental crust.

• Oceanic crust is thicker and denser than continental crust.

Which statement below shows the correct definition of a tectonic plate boundary?

• At a divergent boundary, plates separate.

• At a transform boundary, plates move apart.

• At a convergent boundary, plates slide past each other.

• At a divergent boundary, one plate sinks under another plate.

Alfred Wegener proposed............

• continental drift

• continental rise

• continental slope

• continental slope

When 2 plates move together.

• diverging

• transform

• converging

• sea floor spreading