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WorksheetsPlate Tectonics Review
Total questions: 40
Worksheet time: 40mins
Name
Class
Date
1.
Compared to the Atlantic Ocean, the Pacific Ocean is
a)
staying the same size.
b)
decreasing in size.
c)
increasing in size.
d)
none of the above.
2.
What type of boundary is the diagram showing and what is likely to occur?
a)
convergent boundary forming earthquakes
b)
convergent boundary forming volcanoes
c)
transform boundary forming volcanoes
d)
transform boundary forming earthquakes
3.
What forms along subduction zones?
a)
glaciers
b)
canyons
c)
mid-ocean ridges
d)
deep ocean trenches
4.
Why are volcanoes sometimes formed at convergent boundaries?
a)
As oceanic and continental crust both sink into the mantle, rising magma forms volcanoes.
b)
As oceanic crust sinks and melts at the boundary, the magma rises up through a weak spot in Earth’s crust.
c)
As oceanic and continental crusts collide, the impact melts the continental crust causing volcanoes to form.
d)
As continental crust sinks below oceanic crust, lava is created and forms volcanoes.
5.
Where does volcanic and earthquake activity occur?
a)
Along plate boundaries
b)
Near the MOR
c)
At a rift valley
d)
Only transform boundaries
6.
What is the diagram showing?
a)
convergent boundary
b)
divergent boundary
c)
mountain boundary
d)
transform boundary
7.
A collision between two pieces of continental crust at a converging boundary produces a:
a)
rift valley.
b)
deep ocean trench.
c)
mountain range.
d)
mid-ocean ridge.
8.
What landform would you expect to find at the boundary of the Nazca Plate and the South American Plate?
a)
hot spot
b)
mountain range
c)
subduction zone
d)
mid-ocean ridge
9.
What evidence did Wegener have to support his theory of continental drift?
a)
sonar readings of undersea mountains and proof of convection currents in the asthenosphere
b)
matching fossils on different continents, landform shapes that align like puzzle pieces and tropical fossils found in cold climates
c)
mass extinctions, rock layers and cave drawings
d)
eye witness reports of the continents moving from one location to another
10.
The process by which the ocean floor sinks through a deep ocean trench and back into the mantle is known as:
a)
conduction.
b)
convection.
c)
subduction.
d)
continental drift.
11.
Which of the following provides the best explanation as to why convection currents in the mantle cause tectonic plate movement?
a)
Warm, less dense molten material rises while cool, more dense material sinks creating convection currents which cause the tectonic plates to move.
b)
Cool, less dense molten material rises while warm, more dense material sinks creating convection currents which cause the tectonic plates to move.
c)
Warm, more dense molten material rises while cool, less dense material sinks creating convection currents which cause the tectonic plates to move.
d)
Cool, more dense molten material rises while warm, less dense material sinks creating convection currents which cause the tectonic plates to move.
12.
Which of the following statements is TRUE about Earth’s lithospheric plates?
a)
Material is being removed from some of the edges, and no new material is being added.
b)
New material is being added to some of the edges, and no material is being removed.
c)
New material is being added to some of the edges, and the same amount of material is being crumpled upward or recycled back into the earth’s interior.
d)
New material is being added to some of the edges, and the same amount of material is being broken into pieces and carried away.
13.
Magma pushes up from the mantle in the middle of the Atlantic Ocean. As a result, the Atlantic Ocean is growing by several centimeters each year. How else has this magma affected the Atlantic Ocean?
a)
It has produced a flat, smooth ocean floor as the continents separate.
b)
It has created a long, large mountain range below the ocean's surface.
c)
It has produced volcanoes along the edges of the separated continents.
d)
It has made the Atlantic waters much warmer than the Pacific Ocean waters.
14.
What technology was used around the time of World War 2 that helped scientists map the mid-ocean ridge?
a)
sonar
b)
iPods
c)
satellites
d)
submarines
15.
Oceanic crust:
a)
is less dense than continental crust.
b)
is more dense than continental crust.
c)
. has the same density as continental crust.
d)
none of the above
16.
Most geologists think that the movement of Earth’s plates is caused by:
a)
subduction from the ocean floor.
b)
radiation from the Sun.
c)
convection currents in the asthenosphere.
d)
rth’s magnetic field created by the Earth’s core.
17.
The geological theory that states that pieces of Earth’s lithosphere are in constant, slow motion is the theory of :
a)
subduction.
b)
plate tectonics.
c)
deep-ocean trenches.
d)
sea-floor spreading.
18.
What is the correct order, starting from the surface, of Earth’s layers?
a)
crust, outer core, inner core, mantle
b)
crust, mantle, outer core, inner core
c)
crust, mantle, inner core, outer core
d)
crust, inner core, outer core, mantle
19.
The layer of the Earth that the lithospheric plates move on is the
a)
crust.
b)
mesosphere.
c)
lithosphere.
d)
asthenosphere.
20.
The inner core of Earth is SOLID iron and nickel. Iron and nickel will MELT at temperatures around 1,500°C. The average temperature of the inner core is about 5,000°C. Why then, does the inner core not melt and become a liquid?
a)
magnetism keeps the core solid
b)
the combination of iron and nickel will remain solid.
c)
the extreme pressure at the center of the Earth keeps the core solid
d)
the outer core cools the inner core keeping the inner core solid
21.
Which layer of the Earth is made up partly of crust and partly of mantle material?
a)
the mantle
b)
the lithosphere
c)
the asthenosphere
d)
the continental crust
22.
If we compare the density and temperature of the Earth's mantle to the core, what differences can we expect as we move downward into the Earth?
a)
Both the temperature and density increase.
b)
Both the temperature and density decrease.
c)
The temperature decreases and the density increases.
d)
The temperature increases and the density decreases.
23.
Scientists’ knowledge of the Earth’s interior has come primarily from:
a)
using a system of satellites called the global positioning system
b)
studying seismic waves generated by earthquakes.
c)
studying the pattern of fossils on different continents.
d)
studying magnetic reversals in the oceanic crust.
24.
Which of these layers makes up most of Earth’s mass?
a)
core
b)
mantle
c)
oceanic crust
d)
continental crust
25.
Which layer of the Earth is liquid?
a)
outer core
b)
inner core
c)
oceanic crust
d)
continental crust
26.
Tectonic plates consist of
a)
oceanic crust.
b)
continental crust.
c)
asthenosphere.
d)
Both a and b
27.
A rift valley forms where two plates
a)
diverge
b)
converge
c)
slide past each other.
d)
sink back toward the mantle.
28.
Earth’s inner core is
a)
a layer of hot rock.
b)
a layer of solid metal
c)
a layer of molten metal.
d)
a layer of gaseous metal.
29.
When two plates converge, one plate is usually forced to slide under the other. Oceanic plates are more dense than continental plates. If an oceanic plate collides with a continental plate, what will be the likely result?
a)
The continental plate will be pusehd under the oceanic plate, creating an oceanic trench.
b)
The oceanic plate will be pushed under the continental plate, creating an oceanic trench.
c)
The continental plate will be pushed under the oceanic plate, creating a mid-ocean ridge.
d)
The oceanic plate will be pushed under the continental plate, creating a mid-ocean ridge.
30.
The place where two plates come together is known as a
a)
rift valley.
b)
divergent boundary.
c)
transform boundary.
d)
convergent boundary.
31.
Which statement best describes the composition of the ancient supercontinent, Pangaea?
a)
Pangaea contained all of Earth’s crust.
b)
Pangaea contained all of Earth’s tectonic plates.
c)
Pangaea contained all of Earth’s continental crust.
d)
Pangaea contained all of Earth’s oceanic crust.
32.
What type of boundary is formed when plates separate?
a)
transform
b)
convergent
c)
divergent
d)
horizontal
33.
Which of the following describes the layer directly beneath Earth’s lithospheric plates?
a)
It does not move.
b)
It moves very slowly, and it moves in only one direction around the Earth.
c)
It moves very slowly, and it moves in different directions in different places.
d)
It moves very rapidly, and it moves in different directions in different places.
34.
Layer & Its Density
Continental Crust - 2.7 g/cm3
Oceanic Crust - 3.0 g/cm3
Mantle 3.4-5.6 g/cm3
Core 9.9-13.1 g/cm3
If you have a rock that has a mass of 8g and a volume of 2 cmᶾ, which layer of earth did this rock most likely come from?
*Formula -
D = mass/volume
Continental Crust - 2.7 g/cm3
Oceanic Crust - 3.0 g/cm3
Mantle 3.4-5.6 g/cm3
Core 9.9-13.1 g/cm3
If you have a rock that has a mass of 8g and a volume of 2 cmᶾ, which layer of earth did this rock most likely come from?
*Formula -
D = mass/volume
a)
Crust
b)
Mantle
c)
Outer core
d)
Inner core
35.
Which of the following statements is true?
Layer Density Thickness
Continental Crust 2.7 g/cm3 30-100km
Oceanic Crust 3.0 g/cm3 5 km
Mantle 3.4-5.6 g/cm3 2,900 km
Core 9.9-13.0 g/cm3 3,430 km
Layer Density Thickness
Continental Crust 2.7 g/cm3 30-100km
Oceanic Crust 3.0 g/cm3 5 km
Mantle 3.4-5.6 g/cm3 2,900 km
Core 9.9-13.0 g/cm3 3,430 km
a)
The mantle is Earth's thickest and densest layer.
b)
Continental crust is Earth's thinnest and densest layer.
c)
Oceanic crust is Earth's thinnest and least dense layer.
d)
The core is Earth's thickets and densest layer.
36.
Fossils of a particular animal species have been found in both southern Africa and South America but nowhere else. Which of the following is MOST LIKELY the reason why?
a)
The climate changed and became much colder.
b)
The fossils evolved into different organisms.
c)
In the past, Africa and South America were part of the same continent.
d)
In the future, Africa and South America will be part of the same continent.
37.
What conclusion can be drawn from the Theory of Plate Tectonics?
a)
Earth's geography is continually changing.
b)
Earth is continually losing heat
c)
Earth is slowly expanding.
d)
The ocean basins are continually enlarging.
38.
Using the map above, why is it important to know that the same fossils are found in Africa, India, and Antarctica?
a)
The fossils prove that the continents were all once joined together and have drifted apart over hundreds of thousands of years.
b)
The fossils prove that the same species of animals can be found living in different continents on Earth today.
c)
The fossils prove that the continents will be joined together in the future and create one large continent.
d)
The fossils do not prove anything so it is not worth the time to dig them up from the ground.
39.
Using the map above, which result below supports that climate change over time is evidence to support the Theory of Continental Drift?
a)
Pangaea broke apart causing an ice age.
b)
Antarctica drifted farther from the equator causing its climate to cool.
c)
North America drifted farther from the equator causing its climate to heat up.
d)
Over time, the equator gradually became warmer and the poles became colder.
40.
You and a friend are hiking in the mountains. You stop to make a campground for the night. As you and your friend are digging a small hole to safely build a firepit, you discover many seashells. What can you conclude about the seashells found on the side of the mountain?
a)
The area was never located under water.
b)
The area was once located in a dry, cold area.
c)
The animals that used these shells once lived on land.
d)
The area was once covered with water.
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