Chapter 17.3

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What is an example of continental-continental???

Himalayas

What is an example of oceanic continental???

Peru-Chile Trench and the Andes Mountain Range

What is an example of a transfrorm boundary???

San Andreas Fault

Which feature is associated with a continental-continental plate boundary???

a mountain range

What does each type of boundary have???

certain geologic characteristics and processes associated with it

What does oceanic continental result in???

chain of volcanoes along the edge of the continental plate

Places where tectonic plates are called___???

convergent boundaries

What happens in a transform boundary???

crust is neither destroyed or formed

What is oceanic plate made mostly of???

dense basaltic rocks

What is plate tectonics the theory of???

describes how tectonic plates move and shape Earth's surface

Which theory states that Earth's crust and rigid upper mantle move in different directions and at different rates over Earth's surfac???

plate tectonics

What is a transform boundary???

region where two plates slide horizontally past each other

What begins at divergent boundaries???

seafloor spreading

How fast do tectonic plates move???

slowly - only a few centimeters a year

Which of the following features forms when two oceanic plates converge???

subduction zones

What happens when two tectonic plates collide???

the denser plate eventually descends below the other, less-dense plate in a process called subduction

What is tectonic plate movement similar to???

the growth of fingernails

Which of the following landforms results from divergence of continental crust???

a rift valley

Which of the following best describes what happens when an oceanic plate converges with a continental plate???

a trench and a mountain range with many volcanoes form

Where are divergent boundaries found???

along the sea floor in rift valleys

What does the oceanic continental create???

an ocean trench and a volcanic arc

What happens to cause an oceanic-continental???

an oceanic plate and a continental plate collide

Where do tectonic plates interact with each other???

at their boundaries

Oceanic crust is made mostly of___???

basalt

Why cannot continetal crust descend???

because continental rock are less dense and will not sink into the mantle

What happens to the continental plates in a continental-continental???

beome crumpled, folded, and uplifted

Tectonic plates interact at places called plate___???

boundaries

Where do tectonic plates move???

different directions at different rates

Places where tectonic plates move apart are called___???

divergent boundaries

The Mid Atlantic Ridge is an example of___???

divergent boundary

What are tectonic plates???

huge pieces of crust and rigid upper mantle that fit together at their edges to cover Earth's surface

What happens because the magma is less dense???

it rises back to the surface where it often erupts and forms an arc of volcanic islands that parallel the trench

What are transform boundaries characterized by???

long faults and shallow earthquakes

What is a rift valley???

long narrow depression that forms when continental crust begins to seperate

What is an example of when the magma is less dense???

marianas trench and marianas islands

What can happen when two oceanic plates converge and one is subducted into the mantle???

melted magma erupts and forms an arc of islands

What is an example of a rift valley???

mid-atlantic ridge

What happens along a divergent boundary???

new ocean crust forms

Where are most divergent boundaries found???

on the seafloor

What does the formation of new ocean crust at most divergent boundaries account for???

the high heat, flow, volcanism, and earthquakes associated with these boundaries

What does water carried into Earth by the subduction plate lower???

the melting temperature of the plate causing it to melt at shallower depths

At which tectonic plate boundary do pates slide horizontally past each other???

transform boundary

What happens in a continental-continental???

two continental plates collide

What causes divirgent boundaries???

two tectonic plates are moving apart

What happens at convergent boundaries???

two tectonic plates are moving toward each other

Convergent boundaries are classified according to the___???

type of crust involved

What does continental-continental form???

vast mountain ranges

Which of the following is not associated with transform boundaries???

volcanoes

When did the subduction zone form???

when one ocean plate descends below another oceanic plate


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