WorksheetsPlate Tectonics Review
Total questions: 66
Worksheet time: 35mins
Pangaea
What is the difference between the lithosphere and asthenosphere layers that make up the mantle?
The lithosphere is dense solid metal while the asthenosphere is made of liquid molten metal
The lithosphere is molten rock that moves while the asthenosphere is rigid and thick
_______________ Currents within the mantle cause the earth's plates to move and shift so molten material rises and falls due to density and gravity
What forms where two oceanic plates collide?
a hot spot
subduction zone
rift valley
transform boundary
How fast to the plates move?
1 - 12 cm a year
10 - 20 feet a year
a mile a year
they don't move
What causes seafloor spreading?
new material is being added to the asthenosphere
earthquakes
sediments compacting
magma rising at divergent boundaries
The famous African Rift Valley is and example of _____________.
a mid-ocean ridge
a divergent boundary
a convergent boundary
a transform boundary
Which of these are evidence supporting the idea of continental drift?
matching fossil beds on separate continents
matching rock banding on separate continents
nothing is evidence
matching fossil beds and rock banding on separate continents
An underwater mountain chain is called _____________.
a deep sea trench
oceanic crust
ocean floor sediment
an ocean ridge
The youngest rocks on the ocean floor are ________________.
near continents
far away from mid-ocean ridges
at mid-ocean ridges
near Asia
Plate movement is _______________.
fast
slow
periodic
Which of these supports the idea of continental drift?
Matching river systems
Matching land forms
Matching weather patterns
global winds
What forms when two continental plates collide?
volcanoes
faults
mountains
river valleys
Who first formally proposed the idea of continental drift?
Albert Schweitzer
Albert Einstein
Alfred Wegener
Alfred Hitchcock
Volcanoes form at ________________.
transform boundaries
divergent boundaries
the center of continents
at ocean/continental convergent boundaries
Bands of rock with alternating magnetic fields indicate that Earth's magnetic field __________.
is constant
grows stronger every 15 years
has weakened over time
has reversed many times
Why didn't anyone fully accept Wegener's theory of continental drift until after WWII?
He was a kook that liked freezing weather
No one could explain how it worked
He was not a real scientist
There were a lot of crazy scientists in those days......
Mountains on the East Coast are rounded and have deep soil. Mountains on the West Coast are tall and rocky. Why?
East coast mountains are young and haven't eroded
West coast mountains are young and haven't eroded
East coast mountains are old and weathered
West coast mountains are old and weathered
The youngest part of the sea floor is _____________.
near deep sea trenches
where there is thick ocean sediments
near mid-ocean ridges
where the widest bands of magnetic polarity are found
The alignment of iron minerals in rocks is proof that Earth's _____________has reversed in the past.
magnetic field
core
gravity
asthenosphere
Which of these is at a transform boundary?
Appalachian Mountains (almost heaven)
San Andreas Fault (good bye California)
Himalaya Mountains (Is that a Yeti?)
Mid-Atlantic Ridge (Iceland dividing)
The magnetic stripe pattern on one side of an ocean ridge is _____________.
a mirror image of the other side
younger than the other side
different than the rocks on land
Plates move apart at __________boundaries.
(Hint: Think of the song!)
convergent
stable
transform
divergent
Coal beds in Antarctica show that the continent was once _________
(Hint: Where does coal come from?)
part of Africa
warm
colder
farther from the Equator
Seafloor spreading happens because ________________
of convection currents in the Mantle
of volcanoes
of giant sea serpents
of undersea construction
Pangaea
Continental Drift
Tectonic Plates
Most geologist think that the movement of Earth's tectonic plates is caused by
the rotation of the Earth.
the Earth's magnetic field.
subduction.
convection currents.
Ocean crust is made of _______ and is _______ dense than continental crust.
basalt, less
basalt, more
granite, less
granite, more
Which of the following is formed at Continent- Continent convergent boundaries?
Volcanic Mountains
Earthquakes
Non-volcanic Mountain Ranges
Both volcanoes and earthquakes
Which of the following is the a picture of a ocean to ocean convergent boundary?
None of those show a ocean to ocean convergent
What formations happen at ocean to ocean subduction zones?
Deep oceanic trenches
Mountain Ranges
Coastal Volcanic Mountains
Both mountains and volcanoes
The cascade mountain range, where Mt. St Helens is formed, was created because of a ...
Subduction zone
Ocean - continent boundary
crust melted and magma formed volcanic mountain ranges
All of those above
Where is crust DESTROYED (when melting in the mantle!)?
Continent- continent Convergent
Transform boundaries
Subduction zones
All convergent boundaries
Which is an example of a plate boundary which has formed the Himalayas Mountain Range (home of Mt. Everest!) ?
Ocean- continent convergent boundary
Ocean- Ocean convergent boundary
Continent - continent Convergent boundary
Transform boundary
Which of the following is the photo which formed JAPAN- a volcanic island arc?
At which plate boundaries does a SUBDUCTION zone occur?
Continent to continent convergent boundary
Ocean- continent convergent boundary
ocean- ocean convergent boundary
Both Ocean-Ocean and Ocean- Cont. Boundaries
Both Ocean- Cont. and Cont- cont. Boundaries
How were the Colorado Rockies Formed?
Continent Continent Convergent COLLISION!
Deep Ocean- Ocean subduction zone
Shallow subduction of ocean under continent plate - Volcanoes!
Which plate is the SUBDUCTING or sinking plate in a convergent boundary?
The dense oceanic plate
The Thick continental plate
Neither
Both ocean and continental plate can sink.
When the subducting plate sinks into the mantle it heats up and melts. This can form which of the following?
Coastal volcanic mountain arcs like the Cascades (Mt. St. Helens)
Oceanic volcanic island arcs like Japan (Mt. Fuji)
Very tall mountain ranges like the Himalayas (Mt. Everest)
Both Volcanic arcs- continental and oceanic.
Fill in the blank: The oceanic plate is _______ dense than the continental plate so it sinks, or subducts, under the continental plate.
Less
More
Same
At which of the following boundaries is CRUST neither created OR destroyed- it is just reformed?
Ocean- continent boundary
Ocean- ocean continent boundary
Continent- continent boundary
Divergent Boundary
At which of the following plate boundaries is there little to no activity happening (no volcanoes and no large earthquakes)
Ocean-ocean convergent
ocean- cont. convergent
cont- cont convergent
divergent
