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WorksheetsPlate Tectonics and Earth's Layers
Total questions: 55
Worksheet time: 28mins
Name
Class
Date
1.
The youngest rocks on the ocean floor are located
a)
near continents
b)
at mid-ocean ridges
c)
far from mid-ocean ridges
d)
near Asia
2.
Scientists have observed that the continents move apart or come together at speeds of a few centimeters per
a)
century
b)
decade
c)
day
d)
year
3.
the presence of the same________on several continents supports the hypothesis of continental drift.
a)
fossils
b)
rocks
c)
neither a nor b
d)
both a and b
4.
the hypothesis that continents have slowly moved to their current locations is called
a)
continental drift
b)
continental slope
c)
magnetic reversal
d)
convection
5.
Plates move apart at ___________ boundaries.
a)
convergent
b)
stable
c)
divergent
d)
transform
6.
The alignment of iron minerals in rocks when they are formed reflects the fact that Earth's ___________has reversed itself several times in the past.
a)
Magnetic Field
b)
core
c)
asthenosphere
d)
gravity
7.
Plates slide past one another at
a)
subduction zones
b)
transform boundaries
c)
convection currents
d)
divergent bounda
8.
The boundary between two plates moving together is called a _____________.
a)
divergent boundary
b)
convergent boundary
c)
transform boundary
d)
lithosphere
9.
While studying the ocean floor, scientist found______________bands of magnetism.
a)
plastic
b)
alternating
c)
no
d)
rectangular
10.
In order to complete a convection current, the rising material must eventually __________Earth.
a)
stop inside
b)
cool
c)
sink back into
d)
warm
11.
The driving forces of tectonic plates are related to convection currents in Earth's ______________.
a)
crust
b)
mantle
c)
inner core
d)
outer core
12.
Seafloor spreading occurs because ______________.
a)
new material is being added to the asthenosphere
b)
earthquakes break apart the ocean floor
c)
sediments accumulate at the area of spreading
d)
molten material beneath Earth's crust rises to the surface
13.
Continental drift states that continents have moved _______to their current locations.
a)
vertically
b)
slowly
c)
quickly
d)
very little
14.
Bands of rock on the seafloor showing alternating magnetic orientation indicate Earth's magnetic field has ___________.
a)
reversed itself in the past
b)
weakened
c)
become stronger
d)
remained the same
15.
A lack of explanation for continental drift prevented many scientist from accepting that a single super-continent called _________ once existed.
a)
Glomar
b)
Glossopteris
c)
Pangaea
d)
Wegener
16.
The youngest part of the ocean floor is found ____________.
a)
along deep sea trenches
b)
where ocean sediments are thickest
c)
near ocean ridges
d)
where Earth's magnetic field changes polarity
17.
Continental drift was not widely accepted when it was first proposed because__________
a)
Wegener couldn't explain why or how the continents moved
b)
Continental landmasses were too big to move slowly over Earth's surface
c)
magnetic and sonar data proved that Wegener's hypothesis was incorrect
d)
mantle convection currents weren't in motion at that time.
18.
The magnetic pattern of ocean-floor rocks on one side of an ocean ridge is _______________.
a)
a mirror image of that of the other side
b)
younger than on the other side
c)
much different from the magnetic pattern found in rocks on land
d)
at right angles to the ocean ridge
19.
Active volcanoes are most likely to form at _____________.
a)
transform boundaries
b)
divergent boundaries
c)
the center of continents
d)
convergent oceanic-continental boundaries
20.
How does uplift contribute to the rock cycle?
a)
It buries sediment, which becomes sedimentary rock
b)
It creates very strong pressure, creating metamorphic rock.
c)
It brings metamorphic and igneous rock to the surface.
d)
none of the above
21.
What does subduction do?
a)
lifts new rock to the surface.
b)
erodes surface rock making sediment
c)
takes rock into Earth where it will be melted
d)
places tension on rocks so that they pull apart
22.
What is one way continents get bigger?
a)
Weathering and erosion build them up.
b)
Rifting causes them to grow
c)
tectonic plates carry other segments of land to them
d)
Earthquakes add to the coast.
23.
The crust and upper mantle make up Earth's _____________.
a)
lithosphere
b)
asthenosphere
c)
core
d)
continents
24.
Scientists have observed that the continents move apart or come together at speeds of a few centimeters per __________.
a)
century
b)
decade
c)
day
d)
year
25.
Plates of the lithosphere float on the __________.
a)
crust
b)
asthenosphere
c)
core
d)
atmosphere
26.
The result of plate movement can be seen at ____________.
a)
abyssal plains
b)
ocean margins
c)
plate centers
d)
plate boundaries
27.
Plates move apart at __________boundaries.
a)
convergent
b)
stable
c)
divergent
d)
transform
28.
Plates slide past one another at _______________.
a)
subduction zones
b)
transform boundaries
c)
convection currents
d)
divergent boundaries
29.
_________ currents inside Earth might drive plate motion.
a)
Vertical
b)
Convection
c)
Horizontal
d)
none of the above
30.
Scientists believe that differences in ___________ causes hot, plastic like rock in the asthenosphere to rise towards Earth's surface.
a)
density
b)
magnetism
c)
weight
d)
composition
31.
In order to complete a convection current, the rising material must eventually ___________ Earth.
a)
stop inside
b)
cool
c)
sink back into
d)
warm
32.
_________________are formed when two continental plates collide.
a)
Volcanoes
b)
Strike-Slip faults
c)
Mountain ranges
d)
Rift valleys
33.
The ____________is an example of a transform boundary.
a)
Appalachian mountains
b)
Himalayas
c)
Mid-Atlantic Ridge
d)
San Andreas Fault
34.
At an oceanic-oceanic convergent plate boundary, ______________________.
a)
new crust is created
b)
old crust is recycled by subduction
c)
old crust is deformed or fractured
d)
plates slide past one another
35.
The downward part of a convection current causes a sinking force that ___________.
a)
pulls tectonic plates towards one another
b)
moves plates apart from one another
c)
lifts and splits the lithosphere
d)
creates a divergent boundary
36.
Features found at a divergent plate boundaries include __________.
a)
mid-ocean ridges
b)
deep-sea trenches
c)
crumpled mountains
d)
island arc volcanoes
37.
Continental -continental plate collisions produce _________.
a)
island arcs
b)
rift valleys
c)
deep-sea trenches
d)
very tall mountain ranges
38.
The driving forces of tectonic plates are related to convection currents in Earth's ______________.
a)
crust
b)
mantle
c)
inner core
d)
outer core
39.
Seafloor spreading occurs because __________.
a)
new material is being added to the asthenosphere
b)
earthquakes break apart the ocean floor
c)
sediments accumulate at the area of spreading
d)
molten material beneath Earth's crust rises to the surface
40.
Why do continents float on top of the mantle?
a)
The mass of the continent is equal to the mass of the mantle it displaces
b)
the mass of the continent is less than the mass of the mantle it displaces.
c)
The mass of the continents is more than the mass of the mantle it displaces
d)
The mass of the mantle is more than the mass of the continent
41.
What happens to the continental crust under a mountain as the mountain erodes?
a)
It rises
b)
It sinks
c)
It slides horizontally
d)
It does not change
42.
Which of the following explains the existence of the rock cycle?
a)
Plate Tectonics
b)
uplift
c)
subsidence
d)
all of the above
43.
What type of mountains are formed when molten rock erupts onto Earth's surface and hardens?
a)
uplifted mountains
b)
fold mountains
c)
volcanic mountains
d)
fault-block mountains
44.
Scientist believe the deeper into the geosphere ________________.
a)
temperature and pressure both increase
b)
temperature increases as pressure decreases
c)
temperature and pressure both decrease
d)
temperature decreases as pressure increases
45.
Which is a layer NOT found in Earth's mantle?
a)
upper mantle
b)
asthenosphere
c)
lithosphere
d)
crust
46.
Which term is used to explain how high or low a landform is above or below sea level?
a)
topography
b)
slope
c)
feature
d)
elevation
47.
Which of the following would best describe a mountain?
a)
low elevation, low relief
b)
high elevation, low relief
c)
low elevation, high relief
d)
high elevation, high relief
48.
Which layer of Earth is the most dense?
a)
crust
b)
mantle
c)
outer core
d)
inner core
49.
Earth's core is mostly made of which metal?
a)
nickel
b)
gold
c)
iron
d)
aluminum
50.
Which best explains why landforms are not permanent?
a)
gravity pulls on landforms molding them to be spherical in shape
b)
Once created landforms do not change.
c)
Earth's magnetic field compresses the surface.
d)
Landforms are shaped by erosion and uplift.
51.
Which term is used to describe the shape of a geographic area?
a)
elevation
b)
topography
c)
relief
d)
landform
52.
The crust and upper mantle make up Earth's ___________.
a)
lithosphere
b)
asthenosphere
c)
core
d)
continents
53.
Plates of the lithosphere are above and float on top of the
a)
crust
b)
asthenosphere
c)
core
d)
atmosphere
54.
Scientist believe that differences in ________ cause hot, plastic like rock in the asthenosphere to rise toward Earth's surface in convection currents.
a)
density
b)
magnetism
c)
weight
d)
composition
55.
The different layers formed on Earth are due to the differences in _________ of the material.
a)
the mass
b)
the volume
c)
the climate
d)
the density
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