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WorksheetsChapter 11: The Dynamic Planet Quiz
Total questions: 20
Worksheet time: 15mins
Knowledge of Earth's interior is mostly derived from
direct sampling of the interior using deep-test wells.
work in Earth's deepest caverns and caves.
indirect evidence involving the analysis of seismic waves.
historic and prehistoric records.
Earth's interior is layered because
centrifugal force separated out the materials based on weight as the Earth solidified.
materials became sorted based on density as the Earth solidified.
materials became sorted based on electromagnetic fields as the Earth solidified.
the planet was formed due to successive bombardments of cosmic debris.
Which of the following gives the correct sequence of layers in Earth, from the surface to the center?
crust, inner core, mantle, outer core
inner core, outer core, mantle, crust
mantle, crust, inner core, outer core
crust, mantle, outer core, inner core
The temperature of Earth's interior
increases with depth so the hottest temperatures are found within Earth's core.
decreases with depth so the hottest temperatures are found within Earth's crust.
decreases in the crust, increases in the mantle, decreases in the outer core, and increases in the inner core.
increases in the crust, decreases in the mantle, increases in the outer core, and decreases in the inner core.
The heat from ________ is the energy that drives plate tectonics.
tidal motion
incoming solar radiation
Earth's extremely hot interior
friction along plate boundaries
The majority of the Earth's volume is within the
crust.
inner core.
mantle.
outer core.
Together, the lower and upper mantles represent about ________ of Earth's total volume.
10%
25%
43%
80%
Which of the following is correct?
Continental crust is less dense than oceanic crust and dominated by silica and magnesium.
Continental crust is denser than oceanic crust and dominated by silica and aluminum.
Oceanic crust is denser than continental crust and dominated by silica and magnesium.
The density of continental and oceanic crust is roughly even.
The dominant elements in continental crust are
silica and aluminum.
silica and magnesium.
magnesium and aluminum.
potassium and iron.
The rigid crust and uppermost mantle are known collectively as the
asthenosphere.
lithosphere.
Moho.
rigid layer.
The plastic layer in the mantle from about 70 to 250 km (43 to 155 mi.) in depth is known as the
asthenosphere.
lithosphere.
Moho.
Gutenberg discontinuity.
________ is the theory that describes the motion of the Earth's lithosphere.
Plate tectonics
Sea floor spreading
Pangaea
Metamorphism
At which of the following locations is new ocean crust being formed?
oceanic rift zones
along collision zones between two continents
along collision zones between two oceanic plates
subduction zones
Which of the following is correct?
The age of the sea floor is the same in most areas of the ocean.
The age of the sea floor does not follow a discernable pattern.
The age of the sea floor increases with increasing distance from a mid-ocean ridge.
The age of the sea floor increases with increasing distance from a trench.
While Earth is estimated to be 4.6 billion years old, the oldest oceanic crust is approximately ________ years old.
2.5 billion
6,000
865 million
280 million
At which of the following locations does subduction occur?
divergent plate boundaries
at sea floor spreading zones
convergent plate boundaries
along transform plate boundaries
Ocean floor subducts under continents because
the ocean floor has a lower density and therefore sinks more easily.
the ocean floor has a higher density and therefore sinks more easily.
the weight of the continents is so great that they push the ocean floor material downward.
granite is denser than basalt, forcing the basaltic ocean floors downward.
Along ________, new ocean floor is formed by upwelling flows of magma, whereas along ________, old oceanic crust is destroyed.
subduction zones; mid-ocean ridges
archipelagos; oceanic trenches
mid-ocean ridges; subduction zones
oceanic trenches; archipelagos
Areas where plates slide past one another, usually at right angles to a seafloor spreading, are
divergent boundaries.
areas of seafloor spreading.
transform boundaries.
convergent boundaries.
________ are sites of upwelling of magma from the mantle independent of plate boundaries.
Hot spots
Subduction zones
Mid-ocean ridges
Plate boundaries
