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WorksheetsEarth's Structures TEST Practice
Total questions: 20
Worksheet time: 12mins
Which of these correctly lists Earth’s layers in order from the center to the surface?
inner core, asthenosphere, lithosphere, outer core
inner core, outer core, asthenosphere, lithosphere
asthenosphere, lithosphere, outer core, inner core
outer core, inner core, asthenosphere, lithosphere
In the convection current of a pan of soup, the cooler, denser fluid
stays on top
stays where it is
sinks to the bottom
rises to the top
A difference between the oceanic crust and the continental crust is that the oceanic crust is
continually being created.
older than the continental crust.
composed chiefly of sedimentary rocks.
more dense than the continental crust.
Earth's lithosphere is broken into separate sections called
plates
faults
trenches
rifts
The continental crust floats on top of the mantle because the crust is
separated from the mantle by a layer of water.
less dense than the mantle.
made of a liquid material.
made up of oxygen which is a light element.
Subduction is
the process that continually adds ocean floor.
a device that bounces sound waves off underwater objects.
the process by which oceanic crust sinks beneath trenches.
the direct transfer of heat through solid materials.
When an earthquake occurs, the speed of the seismic waves changes as they
reflect off of boundaries.
are pulled by the force of gravity.
lose energy to surrounding rocks.
move through different materials.
Scientists rejected Wegener's theory because he could not
describe how seeds moved from Africa to South America
explain what force pushes or pulls continents
describe the climate of Pangaea
explain why continental crust was denser than oceanic crust
What best describes the mantle of Earth?
the smallest layer that is made up of molten rock
the largest layer between the crust and outer core
a solid layer made of iron and nickel
a thin layer that is located on the surface
Which event most likely takes place as the result of crustal movement along transform boundaries?
Mountain building
Earthquakes
Volcanic activity
Trenches
The inner core of Earth is solid because of the
magnetic field.
amount of pressure.
extreme temperature.
rate of rotation.
At which location does the movement of tectonic plates form isolated volcanic islands, such as Hawaii?
subduction zone
hot spot
transform boundary
divergent boundary
Which statement best describes why fossils of the same land-dwelling species have been discovered in both South America and Africa?
These organisms became extinct due to climate changes on these continents.
These organisms once lived on one large landmass that later split into two continents.
These organisms were separated by the formation of new mountain ranges.
These organisms migrated to these two continents.
As two continental plates collide, the edges of the plates are crumpled and uplifted. Which of these landforms is most likely a result of this type of collision?
shield volcanoes
normal faults
mountain ranges
u-shaped valleys
An earthquake occurs in western Nevada. What most likely causes the earthquake?
rotational imbalance due to changes in the location of Earth’s poles
temperature variation due to Earth’s orbit around the Sun
gravitational variation due to the Moon’s orbit around Earth
stress due to the movement of Earth’s crustal plates
Which of these tectonic plate boundaries is most likely to form a volcano?
a continental plate sliding past a continental plate
an oceanic plate colliding into a continental plate
a continental plate colliding with a continental plate
an oceanic plate sliding past a continental plate
Which geologic feature most likely forms when an oceanic tectonic plate is slowly subducted beneath a continental tectonic plate?
Continental rift valley
Continental hot spot
Mid-ocean ridge
Ocean trench
What causes the tectonic plates of Earth to continually move?
rotation of the solid core
convection currents in the mantle
volcanic and seismic activity in the crust
strong winds and storms
Seafloor spreading occurs along certain boundaries in the ocean. Which are most likely to form at the boundary where the seafloor is spreading?
strike-slip faults
subduction zones
mid-ocean ridges
continental shelves
When compared to the other layers of Earth, which layer has the lowest density?
outer core
crust
inner core
mantle
