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Name: ________________________ Class: ___________________ Date: __________
ID: A
Chapter 12 Quiz
Modified True/False
Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement tr ue.
____
1. Tectonic plates move apart at mid-ocean ridges.
____
2. Subduction zones occur where continental plates subduct under oceanic plates.
____
3. The epicentre of an earthquake is found on Earth’s surface directly above the focus.
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____
4. What piece of evidence is the best clue to suggest Antarctica was once located closer to the equator
than it is now?
a. It’s shape looks as though it was once attached to Africa.
b. Its average temperature is warmer in December than in July.
c. Fossils of tropical plants have been found there.
d. The large amount of biodiversity that exists on Antarctica.
____
5. Which of the following was not used by Alfred Wegener for his theory of continental drift?
a. fossil evidence
c. patterns of earthquakes
b. similar rock structures
d. matching continental shapes
____
6. Alternating magnetic stripes on either side of an ocean ridge are caused by:
a. the fast cooling of magma that reaches the ocean bottom
b. the thick layers of ocean sediment
c. the cooling of magnetic magma
d. the reversing polarity of Earth’s magnetic field
____
7. Continents on lithospheric plates move around Earth’s surface due to convection currents in Earth’s:
a. crust
c. outer core
b. mantle
d. inner core
1
Name: ________________________
ID: A
Use the following diagram depicting a cross-section through Earth’s surface to answer the next four
questions.
____
8. Which of Earth’s layers contains solid iron and nickel?
a. R
c. T
b. S
d. U
____
9. Which of Earth’s layers cannot transmit S-waves?
a. R
c. T
b. S
d. U
Use the following diagram to answer the next five questions.
____ 10. Which of the following plate boundaries is shown at Y in the diagram?
a. a transform boundary
c. a continental-oceanic boundary
b. an oceanic-oceanic boundary
d. a continental-continental boundary
2
Name: ________________________
ID: A
____ 11. Which of the following plate boundaries is shown at X in the diagram?
a. a diverging oceanic-oceanic boundary
b. a converging oceanic-oceanic boundary
c. a diverging continental-oceanic boundary
d. a converging continental-continental boundary
____ 12. Mt. St. Helens is part of the Cascade mountain range in Washington State. It is showing signs of
renewed volcanic activity after being relatively quiet since its 1980 eruption. What is the probable
reason for this renewed volcanic activity in Mt. St. Helens?
a. The volcano erupts on a 30-year cycle.
b. Earthquakes are causing magma to build up.
c. The 1980 eruption did not release enough pressure.
d. New molten material is coming up from a subducting plate.
Use the following diagram to answer the next two questions.
____ 13. What type of plate boundary is shown in the diagram?
a. a transform boundary
c. a continental-oceanic boundary
b. an oceanic-oceanic boundary
d. a continental-continental boundary
____ 14. What types of geological features are associated with this type of plate boundary?
a. earthquakes and volcanoes only
b. mountains and volcanoes only
c. mountains and earthquakes only
d. earthquakes, mountains, and volcanoes
3
Name: ________________________
ID: A
____ 15. Why is it possible that British Columbia may experience a volcanic eruption within the next hundred
years?
a. Volcanoes occur close to oceans, and British Columbia borders an ocean.
b. British Columbia is near a tectonic plate boundary.
c. British Columbia is on very soft rock, which melts easily.
d. British Columbia experiences earthquakes, and volcanoes are associated with
earthquakes.
____ 16. Which of the following is the fastest seismic wave?
a. P-wave
c. L-wave
b. S-wave
d. surface wave
Use the following diagram to answer the next three questions.
____ 17. Where is a trench located?
a. W
b. X
c.
d.
Y
Z
____ 18. What type of seismic wave has particle motion moving back and forth in the direction of wave
travel?
a. P-wave
b. S-wave
c.
d.
L-wave
surface wave
____ 19. Which seismic waves travel only along the surface of Earth?
a. P-waves
c. L-waves
b. S-waves
d. body waves
4
Name: ________________________
ID: A
____ 20. Which diagram below shows the map symbol for a diverging plate boundary?
a.
b.
diagram A
diagram B
c.
d.
diagram C
diagram D
Short Answer
21. Explain why volcanoes form at oceanic-continental plate boundaries but not at
continental-continental plate boundaries. (2 marks)
Problem
22. Explain how convection currents are created in Earth’s mantle and explain how they drive the
motion of the tectonic plates. (2 marks)
5
ID: A
Chapter 12 Quiz
Answer Section
MODIFIED TRUE/FALSE
1. ANS:
LOC:
MSC:
2. ANS:
T
D4-3
U
F
PTS: 1
TOP: Evidence for Continental Drift
DIF: Average
KEY: tectonic plates | ridges
Subduction zones occur where oceanic plates subduct under continental plates.
PTS:
KEY:
3. ANS:
LOC:
MSC:
1
DIF: Average
LOC: D4-3
subduction zones | plate boundaries
T
PTS: 1
D4-5
TOP: Features of Plate Tectonics
K
TOP:
MSC:
DIF:
KEY:
Features of Plate Tectonics
U
Average
earthquake | epicentre | focus
MULTIPLE CHOICE
4. ANS:
TOP:
MSC:
5. ANS:
TOP:
MSC:
6. ANS:
TOP:
MSC:
7. ANS:
TOP:
MSC:
8. ANS:
TOP:
MSC:
9. ANS:
TOP:
MSC:
10. ANS:
TOP:
MSC:
11. ANS:
TOP:
MSC:
12. ANS:
TOP:
C
PTS: 1
Evidence for Continental Drift
U
C
PTS: 1
Evidence for Continental Drift
U
D
PTS: 1
Evidence for Continental Drift
U
B
PTS: 1
Features of Plate Tectonics
U
D
PTS: 1
Features of Plate Tectonics
U
C
PTS: 1
Features of Plate Tectonics
H
C
PTS: 1
Features of Plate Tectonics
U
A
PTS: 1
Features of Plate Tectonics
U
D
PTS: 1
Features of Plate Tectonics
DIF: Difficult
LOC: D5-2
KEY: continental drift theory
DIF: Difficult
LOC: D5-1
KEY: continental drift theory
DIF: Difficult
LOC: D5-2
KEY: magnetic striping
DIF: Easy
LOC: D4-2
KEY: mantle convection
DIF: Easy
LOC: D4-2
KEY: Earth’s layers
DIF: Difficult
LOC: D4-2
KEY: Earth’s layers | earthquake waves
DIF: Average
LOC: D4-3
KEY: plate boundaries
DIF: Average
LOC: D4-3
KEY: plate boundaries
DIF: Difficult
KEY: volcanoes
1
LOC: D4-5
MSC: U
ID: A
13. ANS:
TOP:
MSC:
14. ANS:
TOP:
MSC:
15. ANS:
TOP:
MSC:
16. ANS:
TOP:
MSC:
17. ANS:
TOP:
18. ANS:
TOP:
19. ANS:
TOP:
20. ANS:
TOP:
MSC:
D
PTS: 1
Features of Plate Tectonics
U
B
PTS: 1
Features of Plate Tectonics
U
B
PTS: 1
Features of Plate Tectonics
H
A
PTS: 1
Features of Plate Tectonics
K
B
PTS: 1
Features of Plate Tectonics
A
PTS: 1
Features of Plate Tectonics
C
PTS: 1
Features of Plate Tectonics
A
PTS: 1
Features of Plate Tectonics
U
DIF: Average
LOC: D4-3
KEY: plate boundaries | convergence
DIF: Difficult
LOC: D4-3
KEY: plate boundaries | convergence
DIF: Difficult
LOC: D4-5
KEY: plate boundaries
DIF: Easy
LOC: D4-2
KEY: earthquakes | seismic waves
DIF:
KEY:
DIF:
KEY:
DIF:
KEY:
DIF:
KEY:
Easy
LOC: D4-1
trench
MSC: U
Average
LOC: D4-2
earthquakes MSC: U
Average
LOC: D4-2
earthquakes MSC: U
Average
LOC: D4-4
plate boundaries | diverging | symbol
SHORT ANSWER
21. ANS:
At oceanic-continental plate boundaries the oceanic plate subducts and melts, forming material for
volcanoes.
PTS: 1
DIF: Average
KEY: plate boundaries
LOC: D4-3
MSC: U
TOP: Features of Plate Tectonics
PROBLEM
22. ANS:
Convection currents occur in Earth’s mantle when rock material is heated by the decay of radioactive
materials (isotopes). The rock material becomes less dense (i.e., magma), then expands and rises. As
this material rises, cooler more dense material moves to take its place. When the rising material
cools, it sinks, only to be reheated. The resulting circular motion is called a convection current.
PTS: 2
DIF: Average
KEY: mantle convection
LOC: D4-6
MSC: U
2
TOP: Features of Plate Tectonics