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Boundary between two colliding plates, often associated with mountain building, ocean trenches and volcanic islands
plate boundary
magma
divergent boundary
convergent boundary
the region where an oceanic plate sinks down into the asthenosphere at a convergent boundary, usually between continental and oceanic plates
subduction zone
lava zone
nitrogen zone
continental zone
where two plates are moving apart, magma comes up to create new crust
ridge
divergent boundary
convergent boundary
plate boundary
where two plates are moving apart, magma comes up to create new crust
lithosphere
trench
ridge
magma
A long narrow deep depression in the ocean bed
ridge
fault
trench
rift
A deep crack in the Earth's surface associated with divergent boundary
lava
rift
ridge
trench
Circular currents in the mantle caused by the magma being heated by the core off the Earth.
convection currents
lava
magma
hot air
proposed by Alfred Wegener, that the continents were once joined together and have since drifted apart
theory of plate tectonics
tectonic plates
plate boundary
theory of continental drift
formed by two continental plates colliding and forcing each other upwards during convergent boundary
grassland
mountain ranges
snow
trench
Three Types of Plate Boundaries
Transform (slide past)
Convergent (collision)
Divergent (pull apart)
All the above
Transform Boundary
Where two plates slide past each other.
when two plates collide
when two plates are pulling apart
None of the above
Examples of convergent boundaries where two continental plates collide producing a large mountain range.
San Andreas Fault (USA)
Japan (Asia); Aleutian Islands (Alaska, USA)
Andes Mountains (S. America)
Himalaya Mtns (Asia); Appalachian Mtns (USA)
Example of divergent boundary between two continental plates.
Mid-Atlantic Ridge (Atlantic Ocean)
Andes Mountains (S. America)
East Africa Rift Valley
None of the above
boundary zones are characterized by deep-ocean trenches, shallow to deep earthquakes, and mountain ranges containing active volcanoes.
Convergent
Divergent
Transform
All the above
New oceanic crust (sea floor) is created at this boundary.
Divergent Oceanic
Divergent Continental
Convergent Oceanic
Transform
Most plates are made of ______________ and _______________ crust.
oceanic, continental
volcanic, glacial
hot, cold
soft, hard
The study of plate movement and its effects is called _____________________.
dirty dishes
plate tectonics
continental drift
inner core
True or False. The movement of one plate affects the other plates around it.
True
False
The three types of plate boundaries are ______________, ____________, and ________________.
hot, warm, cold
convergent, divergent, transform
volcanic, mountainous, rift
Which type of crust is more dense: continental or oceanic?
continental
oceanic
What tectonic event can happen at every type of boundary?
volcano
mountain forming
rift valley
earthquakes
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