Download Activity 3-2: Plate Boundaries

Earth Science 11
Name: __________________________
Block: ____________
Activity 3-2: Plate Boundaries
1.
Fill in the blanks. Select from the following list:
earthquakes
subduction
oceanic
volcanoes
boundaries
transform
convergent
continental
divergent
Plate _______________ are named for the type of motion involved. For example,
at a _______________ plate boundary, plates spread apart from one another. At a
_______________ boundary, plates slide past each other. There are three types
of _______________ boundaries, depending on the combination of lithosphere
types involved. If one or both of the plates is _______________, then a
subduction zone is formed. If both plates are _______________, a tall mountain
range results. All plate boundaries are associated with _______________.
However, at a transform boundary you will not find _______________.
2.
Match each statement with the appropriate term.
_____ A line of volcanic islands along a subduction zone.
A) mid-ocean ridge
_____ The San Andreas fault is a ____ boundary.
B) divergent
_____ The Cascade volcanoes are a result of _____.
C) trench
_____ A valley formed as plates move apart.
D) convergent
_____ A submarine valley along a subduction zone.
E) subduction
_____ The location where new seafloor is made.
_____ A boundary where plates move together.
F) transform
G) island arc
_____ A boundary where plates spread apart.
H) island chain
_____ A line of volcanic islands away from a plate boundary.
I) rift
3.
Complete the following table.
Diagram
Type of Motion
Geologic Features
Examples
Mid Atlantic Ridge,
Juan de Fuca Ridge,
East African Rift
Earthquakes,
transform fault,
fault trace,
no volcanoes
Convergent;
oceanic-continental
subduction zone