Earth Dynamics--Part 1 Question Preview (ID: 48673)


Landforms At Plate Boundaries, Continent Building, Mountains. TEACHERS: click here for quick copy question ID numbers.

Why does seafloor spreading occur?
a) A landmass is uplifted and erosion occurs.
b) Two plates collide and create folded mountains.
c) Molten material (magma) beneath Earth’s crust rises to the surface.
d) Molten material erupts from a volcano creating a plateau.

What type of boundary is the Great Rift Valley in Africa?
a) convergent continental-continental boundary
b) convergent oceanic-continental boundary
c) divergent boundary
d) transform boundary

Where are active volcanoes most likely to form?
a) convergent continental-continental boundaries
b) convergent oceanic-continental boundaries
c) divergent boundaries
d) transform boundaries

Volcanic arcs form where two plates ___________________.
a) converge
b) diverge
c) slide past each other
d) form fault blocks

What is formed where the plates pull apart under the ocean, making the crust between them thinner, and hot mantle rock pushes up?
a) mountains
b) ocean trenches
c) mid-ocean ridges
d) volcanic arcs

Stress that occurs as something is pulled apart
a) compression
b) tension
c) shear
d) subsidence

A mid-ocean ridge is an underwater _______________ chain.
a) valley
b) rift
c) mountain
d) trench

The rock in the continental crust is ________________ than the mantle.
a) more dense
b) less dense
c) the same density
d) I'm don't know anything about density.

Plates move together at a ______________________ boundary.
a) convergent
b) divergent
c) transform
d) slip-strike

One plate is forced under another in a __________ zone.
a) transform
b) uplift
c) subsidence
d) subduction

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