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Total questions: 15
Worksheet time: 10mins
What forms when oceanic crust diverges?
Mountain ranges
Island arc
New crust
Mid-ocean ridges & new crust
(a) type of crust is thinner and denser.
At mid-ocean ridges....
the crust is older
sea-floor spreading occurs
oceanic lithosphere is destroyed
tectonic plates are colliding
What forms when continental crust diverges?
Islands
Rift valleys & new crust
Volcanoes
Folded Mountains
The picture is an example of what kind of plate boundary?
Uplifting
Transform
Convergent
Divergent
A subduction zone is where two plates do what?
Collide and one is pushed under and melted
Spread apart to form new crust.
Collide and form mountains.
Separate and form new continents.
At transform plate boundaries...
the plates collide
the plates divide
the plates slide past each other
None of the above
Draw where you would expect to see a volcanic mountain range
What forms when 2 oceanic plates converge?
Sea floor spreading
trenches and volcanic island arcs
rift valleys
Mountain ranges form in the ocean
What forms when an ocean plate and continental plate converge?
Subduction creates volcanic mountain ranges.
Sea-floor spreading.
Rift Valleys
Subduction creates volcanic island arcs.
What forms when 2 continental plates converge?
Volcanoes
Rift Valleys
Folded Mountains
Islands
Convection currents occur in the _____?
Mantle
Lithosphere
Asthenosphere
Crust
When a heavier, more dense plate slides under a less dense plate within a subduction zone, it is called
tectonic plate drag
convection
ridge push
slab pull
What feature occurs at transform boundaries?
Earthquakes
Rift valleys
Volcanoes
Mountains
The orange and red stripes show normal magnetic patterns, what do the white stripes represent?
normal magnetism in the asthenosphere
normal magnetism in the lithosphere
magnetic reversal in the asthenosphere
magnetic reversal in the lithosphere
