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E.8.9A.2_8.9A.3

Total questions: 36

Worksheet time: 29mins

Name
Class
Date
1.
What causes tectonic plates to move along the Earth's surface?
a)
wind
b)
ocean currents
c)
convection in the mantle
d)
expansion of the Earth
2.
What type of boundary occurs when two plates move away from each other?
a)
transform
b)
subduction
c)
convergent
d)
divergent
3.
What forms at a divergent boundary between two oceanic plates?
a)
rift valley
b)
mountain
c)
mid-ocean ridge
d)
trench
4.
Which type of crust is more dense?
a)
oceanic
b)
continental
c)
divergent
d)
pizza
5.
What type of boundary occurs when two plates move toward each other?
a)
convergent
b)
divergent
c)
transform
d)
lateral
6.
What forms at a convergent boundary between a continental plate and an oceanic plate?
a)
volcanoes
b)
rift valleys
c)
faults
d)
mid-ocean ridges
7.
A rift valley occurs at a ____________ boundary.
a)
divergent
b)
convergent
c)
transform
d)
horizontal
8.
What is the process in which hot molten rock rises, then cools and sinks back to the core?
a)
plate tectonics
b)
continental drift
c)
convection
d)
divergence
9.
A trench forms at a _________ boundary.
a)
convergent
b)
divergent
c)
transform
d)
vertical
10.
Mountains form at a ___________ boundary.
a)
transform
b)
divergent
c)
convergent
d)
subduction
11.
What type of boundary occurs when two plates slide past each other?
a)
divergent
b)
transform
c)
lateral
d)
convergent
12.
A fault forms at a _________ boundary.
a)
transform
b)
divergent
c)
horizontal
d)
convergent
13.
What type of boundary is shown at A?
a)
transform
b)
convergent
c)
divergent
d)
subduction
14.
What is happening at point B?
a)
subduction
b)
a divergent boundary
c)
convection
d)
an earthquake
15.
What is the process in which two plates move toward each other but one sinks under the other?
a)
subduction
b)
convection
c)
divergence
d)
transformation
16.

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

17.

In sea-floor spreading, molten material rises from the mantle and erupts

a)

along the edges of all the continents.

b)

along mid-ocean ridges.

c)

in deep-ocean trenches.

d)

at the north and south poles.

18.

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.

19.

Most geologists think that the movement of Earth’s plates is caused by _______

a)

convection.

b)

continental drift.

c)

subduction.

d)

conduction.

20.

The geological theory of _______ states that pieces of Earth’s lithosphere are in constant, slow motion.

a)

subduction

b)

plate tectonics

c)

deep-ocean trenches

d)

sea-floor spreading

21.

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.

22.

Scientists think that convection currents flow in Earth’s

a)

continents.

b)

mantle.

c)

lithosphere.

d)

inner core.

23.

The place where two plates come together is known as a _______

a)

transform boundary.

b)

divergent boundary.

c)

convergent boundary.

d)

rift valley.

24.

Below is a picture of sea-floor spreading. How are the ocean crusts moving?

a)

Converging

b)

Diverging

c)

Sliding

d)

No movement

25.

The San Andreas Fault in California is known as an active earthquake area. What type of

boundary is it?

a)

Converging

b)

Diverging

c)

Transform

d)

Sea Floor Spreading

26.
Where would the oldest rock be found?
a)
L
b)
M
c)
N
d)
O
27.
How is it possible for new crust to be formed without increasing the surface area of the Earth?
a)
Crust is destroyed at the same time it is created
b)
New crust is underwater where it sinks
c)
New crust breaks more easily than old crust
28.
This layer of Earth is the thickest part
a)
crust
b)
outer core
c)
mantle
d)
inner core
29.
What are the two types of crust
a)
continental and oceanic
b)
ocean and upper
c)
lower and upper
d)
pizza and subway
30.
The Himalayas in Asia are an example of what type of plate boundary?
a)
divergent
b)
continent-to-continent convergent
c)
ocean-to-continent convergent
d)
transform
31.
What type of boundary is the SAN ANDREAS FAULT on?
a)
Covergent
b)
Transformers
c)
Divergent
d)
Transform
32.
What is Pangaea?
a)
the name of a German scientist
b)
the name of the super-continent that existed millions of years ago
c)
another name for continental drift
d)
the name of an ancient fossil
33.
What are the two types of crust?
a)
continental and oceanic
b)
ocean and basin
c)
lower and upper
d)
thick and thin
34.
Mountains form from ...
a)
plates sliding past one another
b)
collision of plates
c)
plates moving away from each other
35.
Observe the plate boundary shown here. What type of plate boundary is this? Many geologic events occur at these boundaries. Some are shown, but one is missing. What geologic event would you predict would occur at this plate boundary?
a)
convergent oceanic-oceanic plate boundary; volcano
b)
divergent oceanic-oceanic plate boundary; sea floor spreading
c)
convergent oceanic-continental plate boundary; earthquake
d)
convergent continental-continental plate boundary; mountain building
36.

The Marianas Trench, where the Pacific Plate descends under the leading edge of the Eurasian Plate, is the deepest sea floor in the world. These ocean trenches form when two oceanic plates collide

a)

and the older, less dense of the two plates rides over the edge of the older plate.

b)

when convection currents in the mantle force the older plate downward.

c)

and the younger, denser of the two plates, rides over the edge of the older plate.

d)

and the plates are approximately the same age and density.

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