WorksheetsPlate Tectonics
Total questions: 20
Worksheet time: 2hrs 40mins
The movement of the tectonic plates is caused by
the rotation of the Earth.
convection currents in the Asthenosphere
the gravity of the iron-nickel core.
the Moho discontinuity.
Observe this diagram of a plate boundary. One statement BEST describes what is happening. It is that
the oceanic crust is melting.
the denser ceanic crust is subducting under the less dense oceanic crust
volcanic islands are forming.
the tectonic plates are moving away from each other.
Most geologists think that the movement of Earth’s plates is caused by _______
convection.
continental drift.
subduction.
conduction.
A place where two plates slip past each other, moving in opposite directions, is known as a _______
transform boundary
divergent boundary.
convergent boundary.
rift valley.
The place where two plates come together is known as a _______
transform boundary.
divergent boundary.
convergent boundary.
rift valley.
Below is a picture of sea-floor spreading. How are the ocean crusts moving?
Converging
Diverging
Sliding
No movement
The San Andreas Fault in California is known as an active earthquake area. What type of
boundary is it?
Converging
Diverging
Transform
Sea Floor Spreading
What type of plate boundary lies on the west coast of South America?
Convergent
Divergent
Transform
Uncertain
What plate does New York lie on?
(a)
Which two mantle hot spots are located at midocean ridges?
Iceland and Yellowstone
Galapagos and Tasman
St. Helena and Hawaii
Easter Island and Bouvet
Which type of tectonic plate boundary is found between the South American Plate and the Scotia Plate?
transform
convergent
divergent
complex or uncertain
Crustal formation, which may cause the widening of an ocean, is most likely occurring at the boundary between the
African Plate and the Eurasian Plate
Pacific Plate and the Philippine Plate
Indian-Australian Plate and the Antarctic Plate
South American Plate and the North American Plate
Trenches can be produced at contact zones between tectonic plates. The boundary between the following plates is an example of that:
South American and African
Indian-Australian and Pacific
Eurasian and North American
Pacific and Antarctic
