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Plate Tectonics
Test Description: This covers an introduction to plate tectonics.
Instructions: Answer all questions to get your test result.
1) Wegener's hypothesis of continental drift stated that...
A
the continents do not move.
B
Earth is slowly cooling and shrinking.
C
Earth's surface is made up of seven continents.
D
the continents were once joined together in a supercontinent.
2) What is Pangaea?
A
The name of an ancient fossil
B
The name of a German scientist
C
Another name for continental drift
D
The name of a supercontinent that existed millions of years ago
3) What is any trace of an organism preserved in rock?
A
landform
B
landmass
C
fossil
D
continent
4) What technology was used by geologists in the mid-1900s to map the ocean floor?
A
satellites
B
submarines
C
sonar
D
deep-sea diving
5) Where does molten material rise and erupt in sea-floor spreading?
A
Along the edges of continents
B
At the north and south poles
C
Along mid-ocean ridges
D
In deep-ocean trenches
6) Why is old oceanic crust more dense than new oceanic crust?
A
It is hotter
B
It is closer to a mid-ocean ridge.
C
It is moving toward a deep-ocean trench
D
It is cooler
7) What do geologists think causes the movement of Earth's plates?
A
earthquakes
B
conduction
C
Earth's magnetic field
D
convection currents in the mantle
8) What is the geological theory that Earth's lithosphere is broken into sections called plates which are in slow, constant motion driven by convection currents in the mantle?
A
plate tectonics
B
sea-floor spreading
C
subduction
D
deep-ocean trenches
9) Where do two plates slide past each other in opposite directions?
A
rift valley
B
convergent boundary
C
transform boundary
D
divergent boundary
10) What feature can develop when two pieces of continental crust converge?
A
mid-ocean ridge
B
rift valley
C
deep-ocean trench
D
mountain range
11) What was the name of Alfred Wegener's hypothesis that the Earth's continents slowly move?
A
continental drift
B
continental movement
C
oceanic drift
D
continental displacement
12) What process continually adds new crust to the ocean floor on either side of a mid-ocean ridge?
A
earthquakes
B
volcanic eruptions
C
subduction
D
sea-floor spreading
13) Where does subduction occur?
A
Near the center of an ocean
B
Deep-ocean trenches
C
Mid-ocean ridges
D
Mountain ranges
14) What are the sections of Earth's lithosphere called?
A
Plates
B
Lithospheric pieces
C
Continental drift
D
Lithospheric sections
15) A divergent boundary on land results in a...
A
deep-ocean trench
B
mid-ocean ridge
C
mountain range
D
rift valley
16) When subduction occurs more rapidly than sea-floor spreading in an ocean, what happens to the ocean?
A
It heats up.
B
It cools down.
C
It expands.
D
It shrinks.
17) The newest oceanic crust is found...
A
near deep-ocean trenches.
B
close to mid-ocean ridges.
C
near mountain ranges.
D
far from mid-ocean ridges.
18) What forms the longest mountain chains on Earth?
A
The Rockies
B
mid-ocean ridges
C
The Himalayas
D
The Andes
19) What kind of boundary is characterized by plates slipping past each other in opposite directions?
A
Rift valley
B
Transform boundary
C
Divergent boundary
D
Convergent boundary
20) What process involves oceanic crust bending downward and being recycled into the mantle?
A
Volcanic eruptions
B
Sea-floor spreading
C
Earthquakes
D
Subduction
*select an answer for all questions
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