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Continental Drift, Seafloor Spreading, Plate Boundaries Flashcards | StudBud
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Continental Drift, Seafloor Spreading, Plate Boundaries
Continental Drift, Seafloor Spreading, Plate Boundaries
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Earth Science Unite
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Answers
1
How is it possible for new crust to be formed during seafloor spreading without increasing the area of the Earth?
Old crust is destroyed at subducting convergent plate boundaries
New crust is weak and just breaks into small pieces.
Humans remove the pieces of Earth with a bulldozer.
2
Which area of the oceanic crust is the oldest?
C
D
B
A
3
What is the name of the giant landmass that was formed when all of the continents were attached
Subduction
Sea-floor spreading
Mid-ocean ridge
Pangea
4
The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle
Sea-floor Spreading
Continental Drift
Subduction
Convection
5
The theory that says Earth's continents once made up an ancient supercontinent, and have been drifting apart ever since:
Natural Selection
Pangea
Continental Drift
Gravity
6
Remains of warm-weather plants in arctic areas were evidence used to support continental drift.
TRUE
FALSE
7
Which picture of Earth is the YOUNGEST?
A
B
D
C
8
What type of boundary creates trenches?
Convergent
Transform
Divergent
9
Where is the oldest rock found on the seafloor where seafloor spreading occurs?
Letter "O"
Letter "L"
Letter "M"
10
What type of boundary is this where the plates start out moving TOWARDS each other and then subducting?
Pangea
Convergent
Transform
Divergent
11
Who discovered and found evidence to support the idea of continental drift?
Einstein
Marie Curie
Harry Hess
Alfred Wegener
12
What causes the tectonic plates to move?
Population changes
Faults in Mountain Ranges
Bill Nye
Convection currents in the mantle (under Earth's crust)
13
Which of these is NOT a piece of evidence to support the Theory of Continental Drift?
Land Features (landforms)
Sand erosion
Ancient Climates
Plant Fossils and Animal Fossils
14
This type of boundary creates _________ when the sliding occurs.
Mountains
Earthquakes
Trenches
Volcanos
15
Volcanic islands can form from magma which is pushed up at a __________ plate boundary that is colliding.
convergent
transform
divergent
16
The idea that these same fossils were found on difference continents is evidence of:
Ice Age
Mid ocean ridges
Magnetic Stripes
Continental Drift
17
What piece of technology helped Harry Hess discover that the sea-floor was not flat?
A sonar device
A high tech speed boat
A microscope
A thermometer
18
What kind of plate boundary is shown here where two plates are sliding past each other?
Convergent
Transform
Divergent
19
What kind of plate boundary can play a role in creating a fault?
Convergent
Divergent
Transform
20
A divergent boundary occurs when two plates:
divide (pull apart)
slide
explode
collide (come together)
21
What type of boundary creates mountains?
Convergent
Transform
Divergent
22
This picture shows the process of:
Valley
Fault
Rock Cycle
Subduction
23
Which area of the oceanic crust is the youngest?
C
B
A
D
24
What type of boundary is this creating volcanoes?
Convergent
Transform
Divergent