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Plate Motion Exam Review

Total questions: 45

Worksheet time: 27mins

Name
Class
Date
1.

Which statement best describes Earth's outer layer?

a)

Earth's outer layer is made up of a soft solid material.

b)

Earth's outer layer is made up of hard, solid rock.

c)

Earth's outer layer is a combination of hard, solid rock and a soft, solid material.

d)

Earth's outer layer is made up of hard, solid rock or water; it depends on where you go.

2.

Which is the best definition of a "plate" in this unit?

a)

The parts of Earth's outer layer that rise up above the ocean water.

b)

The small pieces of solid rock that float in the ocean, forming islands and continents.

c)

The single, undivided sheet of hard, solid rock that covers the planet.

d)

One of the large sections of hard, solid rock that make up Earth's outer layer.

3.

Earth's plates are a __________ solid material. Earth's mantle is a ________ solid material.

a)

Soft; hard

b)

Hard; soft

c)

Soft; soft

d)

Hard; hard

4.

One of the very large sections of hard, solid rock making up Earth's outer layer?

a)

Mantle

b)

Pattern

c)

Inner core

d)

Plate

5.

What is a plate boundary?

a)

The single point where Earth's plates have motion.

b)

The place along which two plates meet.

c)

Long lines on the ground that cause the plates to move.

d)

The only location on Earth where earthquakes are possible.

6.

An earthquake is…

a)

the slow plate motion that is constantly happening to the plates.

b)

the sudden shaking of Earth's surface.

c)

the reason that plates have any motion.

d)

a mild geologic hazard.

7.

Plate motion is caused by earthquakes that push the plates around.

a)

True

b)

False

8.

What best describes Earth's mantle?

a)

Liquid, melted rock below the outer layer.

b)

The hard, solid rock beneath the plates.

c)

Liquid, melted rock on which the plates move.

d)

The soft, solid rock on which the plates move.

9.
What is a mid-ocean ridge?
a)
A mid-ocean ridge is a place in the ocean where plates are moving together (converging)
b)
A mid-ocean ridge is a place in the ocean where plates are moving sideways
c)
A mid-ocean ridge is a place in the ocean where plates are not moving
d)
A mid-ocean ridge is a place in the ocean where plates are moving apart (diverging)
10.
Where is a trench found?
a)
A trench is found in the ocean where two plates are diverging (going apart)
b)
A trench is found in the ocean where two plates are moving sideways to each other
c)
A trench is found in the ocean where two plates are converging (coming together)
d)
A trench is found in the ocean far away from a plate boundary
11.
Africa and South America are moving farther apart because
a)
they are on plates that are converging
b)
they are on plates that are moving sideways to each other
c)
they are on plates that are diverging
d)
they are not actually moving at all
12.
If a plate boundary has a trench, it MUST be a
a)
convergent plate boundary
b)
divergent plate boundary
c)
center of a plate
d)
sideways moving boundary
13.
If a plate boundary has a mid-ocean ridge, it MUST be a
a)
convergent plate boundary
b)
divergent plate boundary
c)
center of a plate
d)
sideways moving boundary
14.

Mid-Ocean Ridge?

a)
b)
c)
d)
15.

"Converge" means...

a)

To drift apart

b)

To move towards each other

c)

To slip by each other

d)

To stop

16.
South America and Africa were once together as one place.   What do you think is the BEST evidence for this?
a)
Africa and South America look like they could have fit together
b)
Africa and South America have a plate boundary between them
c)
Fossils of Mesosaurus (an animal that could not swim across the ocean) are found in both Africa and South America
d)
They were never together, that's silly, continents can't move
17.
Iceland is on a plate boundary, and it is getting larger over time.  What kind of plate boundary is Iceland on?
a)
Convergent (moving together)
b)
Divergent (moving apart)
c)
Transform (moving sideways)
d)
Iceland is not on a plate boundary - it is in the center of a plate like Hawaii
18.
Who is the person credited with developing the theory of continental drift?
a)
Harry Hess
b)
Galileo
c)
Alfred Wegener
d)
Newton
19.
What two specific continents fit together most noticeably?
a)
Africa and North America
b)
South America and Europe
c)
South America and Africa
d)
 Antartica and Africa
20.
Which type of information was NOT collected by Wegener to support his continental drift hypothesis?
a)
glacial deposits
b)
 fossils
c)
seafloor magnetic data
d)
rocks
21.
The theory of continental drift named a key part of this idea Pangaea. What is Pangaea?
a)
One of the ancient animals that helped Wegener prove that fossils from different continents originally came from the same location
b)
 supercontinent that existed in Earth's distant past
c)
The underwater ocean range in the middle of the ocean
d)
The hot spot which gave rise to the Hawaiian Islands, among others
22.

Scientists think that the continents once formed a giant landmass that broke apart, and then slowly drifted apart. What is the name given to this hypothesis?

a)

sea-floor Spreading

b)

plate tectonics

c)

continental drift

d)

Pangaea

23.

What are the three types of Evidence that supports Alfred Wegener's Theory?

a)

Fossils, Fish, and Land

b)

Sedimentary, Magma, and Climate

c)

Fossils, Land forms, and Climate

d)

Climate, Land forms, and Metamorphic rock

24.

What is the force that moves the continents?

a)

Conduction

b)

Convection

c)

Radiation

d)

Conveyor belts

25.

What evidence did Wegener use to support his theory?

a)

Continents and fossils fitting together/matching-up like puzzle pieces

b)

glacier scars and other climate evidence from temperature

c)

mountain ranges and rocks line up across continents

d)

all of the above

26.

Why did no one believe Wegener's thoery?

a)

He could not explain HOW the continents moved

b)

He didn't have evidence

c)

His data was wrong

d)

He didn't use the right technology to gather data

27.

How long ago is Pangaea believed to have existed?

a)

200-300 million years ago

b)

1000-2000 years ago

c)

10,000-20,000 years ago

d)

20-30 billion years ago

28.

What are the two types of crust?

a)

continental and oceanic

b)

ocean and basin

c)

lower and upper

d)

thick and thin

29.

What type of plate is thicker?

a)

continental

b)

oceanic

30.

According to the continental drift hypothesis, the presence of similar fossils in South America and Africa supports which scientific idea?

a)

Animals easily and frequently travel from Africa to South America.

b)

Species of animals probably traveled between continents on natural rafts (such as trees destroyed in tsunamis).

c)

Land bridges once existed that connected the continents.

d)

South America and Africa were once connected together.

31.

Glossopteris grew in warm, swampy areas, proving Antarctica used to have a ________________climate.

a)

warm and wet

b)

hot and dry

c)

cold and icy

d)

temperate

32.

Most geologists think that the movement of Earth's tectonic plates is caused by

a)

the rotation of the Earth.

b)

the Earth's magnetic field.

c)

subduction.

d)

convection currents.

33.
True or False: The Mid-Atlantic ridge in the Atlantic ocean is the ONLY example of a divergent boundary (<---->)
a)
True
b)
False
34.

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

35.

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

36.

What particular event is shown on the picture?

a)

mid-ocean ridge

b)

subduction zone

c)

transform boundary

d)

divergent boundary

37.

The process by which the ocean floor sinks beneath an deep-ocean trench and back into the mantle is known as

a)

continental drift

b)

subduction

c)

conduction

d)

convection

38.

Process by which new ocean crust forms.

a)

Seafloor spreading

b)

Continental drift

c)

Mid-ocean ridge

d)

Rift

39.

The ocean floor is made up of what kind of 'new' rock?

a)

Granite

b)

Basalt

c)

Sulfur

d)

Calcite

40.
Is the outer core a liquid or solid?
a)
liquid
b)
solid
41.
Temperature _____________________ as you go deeper into the earth.
a)
increases
b)
decreases
c)
goes up and down depending on the layer
d)
stays the same
42.

Definition of a volcano

a)

an opening in the Earth's crust

b)

crater

c)

vent

d)

mantle

43.
The Theory of Continental Drift states that Pangaea broke apart and the continents "drifted" away from each other
a)
True
b)
False
44.
Mountains form from ...
a)
plates sliding past one another
b)
collision of plates
c)
plates moving away from each other
45.
Associated with transform boundaries.
a)
Volcanoes
b)
mountains
c)
trenches
d)
earthquakes

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