Focus On Earth Science: California Grade 6

Chapter 5: Plate Boundaries and California

Standard Assessment

1.
Why does an oceanic plate always slide under a continental plate when they collide? 1.c
A)The oceanic plate is denser than the continental plate.
B)The continental plate is denser than the oceanic plate.
C)The oceanic plate weighs more than the continental plate.
D)The continental plate weighs more than the oceanic plate.
2.
Which would be a typical speed for the movement of Earth's plates? 1.c
A)3 m/s
B)3 m/y
C)3 cm/s
D)3 cm/y
3.
A _______ is produced when rocks are pulled apart. 1.d
A)transform plate boundary
B)reverse fault
C)normal fault
D)convergent plate boundary
4.
A break, or crack, in rock is called a _________. 1.d
A)footwall
B)fracture
C)fault
D)fold
5.
Which is not a type of stress? 1.d
A)compression
B)tension
C)strike-slip
D)shear
6.
Two plates slide horizontally past each other along a _______. 1.d
A)subduction zone
B)divergent plate boundary
C)rift zone
D)transform plate boundary
7.
Where do most divergent plate boundaries occur? 1.e
A)mid-ocean ridges
B)transform plate boundaries
C)subduction zones
D)continental rifts
8.
When two continental plates collide, _______ are formed. 1.e
A)transform plate boundaries
B)rift valleys
C)normal faults
D)mountains
9.
When _______ occurs, one plate is forced down into the mantle beneath another plate. 1.e
A)fracture
B)tension
C)shear
D)subduction
10.
Volcanoes can be formed where subduction occurs, because of the _______ that occurs in the plate that is sinking. 1.e
A)fracture
B)uplift
C)melting
D)rifting
11.
What type of fault is the San Andreas Fault? 1.f
A)normal fault
B)strike-slip fault
C)reverse fault
D)convergent fault
12.
The Transverse Ranges in Southern California have been produced by _______. 1.f
A)the formation of granitic blocks under volcanic mountains
B)the melting of the Juan de Fuca plate beneath the Cascadia subduction zone
C)movement of the North American Plate and the Pacific Plate past each other
D)stretching of the crust in eastern California
13.
Lassen Peak is an active volcano produced by _______. 1.f
A)the collision of the North American Plate and the Pacific Plate
B)the slipping of plates along the San Andreas Fault
C)the rifting on the North American Plate
D)the melting of oceanic plates beneath a subduction zone
14.
The gulf of California is an example of a _______. 1.f
A)convergent plate boundary
B)reverse fault
C)subduction zone
D)rift valley
15.
Most of California is located on the _______ Plate. 1.f
A)North American
B)Pacific
C)Juan de Fuca
D)Mendocino
Grade 6
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