Intro. to Physical Geology - Chapter 3

Divergent plates move

• Away from each other

• Towards each other

• Slide past each other

• None of the above

Convergent plates move

• Relative to the Moon

• Away from each other

• Past each other

• None of the above

At a transform boundary the plates.....

• Collide

• Diverge

• Slide past each other

• None of the above

This area is called the....

• Arc of Volcanoes

• Ring of Fire

• Horseshoe of Magma

• Action Jackson

Alfred Wegener's early theory of continental drift helped provide evidence to support

• paleomagnetic reversals

• survival of the fittest

• the theory of plate tectonics

• superposition

Why are the mid-ocean ridges higher in elevation than the surrounding ocean floor?

• The force of magma extruding from the fissure pushes the seafloor up

• Warmer material near the ridge is less dense, so it is more buoyant on the mantle

• The collision of the tectonic plates is forcing material higher

• Thermal springs developing in stress fractures are depositing large volumes of material, increasing the height

Where are the majority of transform faults located?

• Southern California

• Radiating from convergent boundaries as stress fractures

• Along mountain ranges that have been thrust up due to collision

• On the ocean floor offsetting segments of oceanic ridge

• None of the above

What drives convection in the Earth, thus is responsible for plate tectonics

• Heat

• The Moon

• The ocean

• The atmosphere

• Continental plates

Convergent plate boundaries are where:

• a) Continents collide

• b) An oceanic plate subducts beneath another oceanic plate

• c) An oceanic plate subducts beneath a continent

• All of the above

• b) and c)

An oceanic transform plate boundary is most likely associated with a(n):

• Oceanic trench

• Subduction zone

• Mountain belt or island arc

• All of the above

• None of the above