Quiz 12- Plate Tectonics

A divergent boundary occurs when plates ....

• Pull apart
• Come together
• Slide past each other
• subducting

What type of event will occur at this boundary?

• Earthquake
• Volcano Eruption
• Tornado
• Mountain Building

The movement of tectonic plates is inferred by many scientists to be driven by

• tidal motions in the hydrosphere

• density differences in the troposphere

• convection currents in the asthenosphere

• solidification in the lithosphere

When a continental crustal plate collides with an oceanic crustal plate, the continental crust is forced to move over the oceanic crust. What is the primary reason that the continental crust stays on top of the oceanic crust?

• Continental crust is less dense.

• Continental crust deforms less easily.

• Continental crust melts at higher temperatures.

• Continental crust contains more mafic minerals.

Which feature is commonly formed at a plate boundary where oceanic crust converges with continental crust?

• a mid ocean ridge

• a transform fault

• new oceanic crust

• an ocean trench

Which evidence causes most scientists to believe that sea

floor spreading occurs at the mid-Atlantic Ridge?

• Oceanic crust is oldest at the ridge.

• Large sedimentary folds exist in the mantle near the ridge.

• Oceanic crust on both sides of the ridge is less dense than

  continental crust.

• Oceanic crust on both sides of the ridge shows matching

  patterns of reversed and normal magnetic polarity.

Base your answer(s) to the following question(s) on the map

of Iceland, a country located on the Mid- Atlantic Ridge. Four locations are represented by the letters A through D. The youngest bedrock is most likely found at which location

• A

• B

• C

• D

According to tectonic plate maps, New York State is presently

located

• at a convergent plate boundary

• above a mantle hot spot

• above a mid-ocean ridge

• near the center of a large plate

Base your answer(s) to the following question(s) on the block

diagram, which shows a tectonic plate boundary. Which tectonic plate boundary is best represented by this

diagram?

• Nazca Plate and Pacific Plate boundary

• Scotia Plat and South American Plate boundary

• Juan de Fuca Plate and North American Plate boundary

• Antarctic Plate and Indian Australian Plate boundary

Sea floor spreading is occurring at the boundary between the

• African plate and Antarctic plate

• Nazca plate and South American plate

• China plate and Philippine plate

• Australian plate and Eurasian plate