Plate Tectonics

Which boundary shows a Mid Ocean Ridge?

• Convergent

• Divergent

• Transform

Which of the following features is most likely formed at converging continental plate boundaries?

• rift valley

• mid ocean ridge

• fault line

• mountain range

A rift valley is evidence of which kind of plate boundary?

• convergent

• transform

• divergent

The drawing below shows the effects of an earthquake on a small part of the Earth’s surface. The diagram shows the movement of land that occurred at a fault during the earthquake.

This type of movement indicates that which plate boundary is present at this location?

• convergent

• divergent

• transform

Which of these describes a divergent boundary?

• Two continental plates moving away from each other, forming a rift valley.

• Two oceanic plates rubbing against each other, forming a fault line.

• Two continental plates colliding, forming a mountain range.

• Two oceanic plates colliding, forming a volcanic arc.

Which geologic events occur most often at a mid-ocean ridge plate boundary?

• Magnetic pole reversals and cooling of the ocean water

• Meteorite impacts and tilting of shorelines

• Hydrosphere pollution and adiabatic heating

• Earthquakes and volcanic eruptions

The diagram below shows the cross section of two crustal plates and the boundary between them. The arrows indicate the direction of rock movement.

The mid-ocean ridge portion of this cross section best represents –

• Convergence of the Nazca Plate and the South American Plate

• Divergence of the African Plate and the South American Plate

• Subduction of the Philippine Plate by the China Plate

• Transform faulting between the Pacific Plate and the North American Plate

Which surface feature was produced by crustal movements at a transform plate boundary?

• East African Rift

• Aleutian Trench

• Tasman Hot Spot

• San Andreas Fault

Most scientists believe that Earth’s crust is composed of plates. There are two kinds of crust. Oceanic crust is more dense, on average, than continental crust. As a result, what would happen if a plate of oceanic crust and a plate of continental crust collided?

• The oceanic crust would sink below the continental crust.

• The oceanic crust would ride above the continental crust.

• C The continental crust would sink below the oceanic crust.

• The continental crust would become thinner than the oceanic crust.

The diagram below shows the interaction between the South American Plate and the Nazca Plate.

What type of plate boundary is found between the South American and the Nazca Plate?

• Divergent boundary

• Convergent boundary

• Transform boundary