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WorksheetsPlate Tectonics
Total questions: 26
Worksheet time: 13mins
Name
Class
Date
1.
Most geologists think that the movement of Earth's plates is caused by
a)
conduction
b)
earthquakes
c)
convection currents in the mantle
d)
Earth's magnetic field
2.
What is the correct order (starting from the surface) of Earth's layers?
a)
crust, outer core, inner core, mantle
b)
mantle, outer core, inner core, crust
c)
crust, mantle, outer core, inner core
d)
outer core, inner core, crust, mantle
3.
The transfer of energy through empty space is called
a)
conduction
b)
convection
c)
radiation
d)
subduction
4.
Heat transfer within a fluid takes place by
a)
convection
b)
convection currents
c)
radiation
d)
conduction
5.
According to Wegener's hypothesis of continental drift,
a)
Earth's surface is made up of seven major landmasses.
b)
the continents do not move
c)
Earth is slowly cooling and shrinking
d)
the continents were once joined together in a single landmass
6.
What is Pangaea?
a)
the name of a German Scientist
b)
the name of the supercontinent that existed millions of years ago
c)
another name for continental drift
d)
the name of an ancient fossil
7.
In sea-floor spreading, molten material rises from the mantle and erupts
a)
along the edges of all the continents.
b)
in deep ocean trenches
c)
along mid-ocean ridges
d)
at the north and and south poles
8.
The geological theory that states that pieces of Earth's lithosphere are in constant, slow motion is the theory of
a)
subduction
b)
deep-ocean trenches
c)
plate tectonics
d)
sea-floor spreading
9.
Earth's mantle is
a)
a layer of molten metal
b)
a layer of hot rock
c)
a dense ball of solid material
d)
a layer of rock that formsEarth's outer skin
10.
Earth's magnetic field results from movements in the
a)
mantle
b)
outer core
c)
inner core
d)
crust
11.
A rift valley forms at a
a)
convergent plate boundary
b)
divergent plate boundary
c)
transform boundary
d)
deep-ocean trench
12.
Mid-ocean ridges are
a)
found in all of Earth's oceans
b)
located mostly along coastlines
c)
found only in the Pacific Ocean
d)
long deep-ocean trenches
13.
A place where two plates slip past each other,moving in opposite directions, is known as a
a)
transform boundary
b)
divergent boundary
c)
convergent boundary
d)
rift valley
14.
What technology did scientists use in the mid-1900's to map the mid-ocean ridge?
a)
satellites
b)
deep-sea diving
c)
submarines
d)
sonar
15.
In sea-floor spreading, molten material rises from the mantle and erupts
a)
along the edges of all the continents
b)
along the mid-ocean ridges
c)
in deep-ocean trenches
d)
at the north and south poles
16.
The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle is known as
a)
convection
b)
continental drift
c)
subduction
d)
conduction
17.
Holes drilled several kilometers into Earth's crust provide direct evidence about Earth's interior in the form of
a)
seismic waves
b)
liquid iron
c)
rock samples
d)
volcanic eruption
18.
Earth's inner core is
a)
a dense ball of solid metal
b)
a layer of molten metal
c)
a layer of hot rock
d)
a layer of rock that forms Earth's outer skin
19.
Most geologist rejected Alfred Wegener's idea of continental drift because
a)
They were afraid of a new idea
b)
Wegener was interested in what Earth was like millions of years ago
c)
Wegener used several different types of evidence to support his hypothesis
d)
Wegener could not identify a force that could move continents
20.
How did scientist discover that rocks farther away from the mid-ocean ridge were older that those near it?
a)
by observing eruptions of molten material on the sea floor.
b)
by mapping rocks on the sea floor sing sonar
c)
by determining the age of rock samples obtained by drilling on the sea floor
d)
by measuring how fast sea-floor spreading occurs
21.
A collision between two pieces of continental crust at a convergent boundary produces a
a)
mid-ocean ridge
b)
deep-ocean trench
c)
rift valley
d)
mountain range
22.
Scientist think that convection currents flow in Earth's
a)
continents
b)
mantle
c)
lithosphere
d)
inner core
23.
According to the theory of plate tectonics, which layer of the earth is broken into separate sections called plates?
a)
lithosphere
b)
asthenospere
c)
mantle
d)
atmosphere
24.
Earth's solid inner core is surrounded by the hot, molten metal of which layer?
a)
continental crust
b)
inner mantle
c)
outer core
d)
lithosphere
25.
The asthenosphere is part of which layr of Earth?
a)
Crust
b)
Mantle
c)
Outer Core
d)
Inner Core
26.
Pressure increases with depth toward the center of the Earth. In which layer would you expect pressure to be the greatest?
a)
mantle
b)
crust
c)
inner core
d)
outer core
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