AnswersPARTA - EVP PGCPS BIOGEOCHEM CR FALL2026 - 798113Lab: Plate Boundaries and Movement

Lab: Plate Boundaries and Movement — Unit test Answers

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1
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Where does compression often occur?

A
along a normal fault
B
along a strike-slip fault
C
at a divergent boundary
D
at a convergent boundary
2
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Which phrase describes elevation?

A
the height of a feature above sea level
B
the distance of a feature above the clouds
C
the distance above the lowest point in the area
D
the height of a feature above the nearest mountaintop
3

The image shows a type of fault.

Question illustration
A
compression
B
gravity
C
tension
D
shearing
4

The image shows a volcanic eruption.

Question illustration
A
This eruption is quiet.
B
This eruption is explosive.
C
This eruption was caused by low-viscosity magma.
D
This eruption may set its surroundings on fire.
5

What is the orientation of the magnetic stripes of iron contained in rocks that support the idea of seafloor spreading?

A
east and west
B
north and east
C
south and west
D
north and south
6

Which statement explains what happens to older crust during seafloor spreading?

A
It is destroyed at coastlines.
B
It moves under continents.
C
It is destroyed at a mid-ocean ridge.
D
It moves away from a mid-ocean ridge.
7

The image shows a landform created by Earth’s forces.

Question illustration
A
anticline
B
shearing
C
syncline
D
tension
8

What type of stress occurs when plates move apart?

A
compression
B
faulting
C
shearing
D
tension
9

Which word identifies the shaking that results from movement under Earth’s surface?

A
earthquake
B
fault
C
plate
D
stress
10

Which correctly lists the three features of Earth that are the main types of landforms?

A
hills, valleys, and plateaus
B
lakes, valleys, and mountains
C
mountains, plains, and plateaus
D
plains, lakes, and hills
11

Which continents contain folded mountains that match up to form one continuous mountain chain, serving as evidence that they once belonged to one landmass called Pangaea?

A
Antarctica and Africa
A
Africa and North America
S
South America and Africa
E
Eurasia and South America
12

What happened to the giant landmass that Wegener described?

A
The pieces remained the same shape over time.
B
The pieces moved quickly to their current locations.
C
The pieces moved toward one another and created mountains.
D
The pieces broke apart and drifted away from one another over time.
13

The table shows the thickness, top density, and bottom density of the different layers of the Earth. Thickness (km)Density (g/cm3)Types of Rock FoundTopBottomCrust302.22.9Silicic rocksUpper mantle7203.44.4PeridotiteLower mantle2,1714.45.6Magnesium and silicon oxidesOuter core2,2599.912.2Iron+oxygenInner core1,22112.813.1Iron+oxygen

A
As depth increases, the density of the layers increases.
B
As depth increases, the density of the layers decreases.
C
As depth increases, the thickness of the layers increases.
D
As depth increases, the thickness of the layers decreases.
14

Which type of zone is located at a deep-ocean trench?

A
convergent
B
divergent
C
subduction
D
transform
15

Study this image.

Question illustration
A
Oceanic and continental plates are colliding.
B
Oceanic and continental plates are shifting past each other.
C
Two continental plates are forming a large mountain.
D
Two oceanic plates are creating several island chains.
16

According to the theory of plate tectonics, which is one feature that plates carry?

A
seafloor
B
inner core
C
lower mantle
D
asthenosphere
17

From which location does seafloor spreading originate?

A
mid-ocean ridges
B
edges of continents
C
deep-ocean trenches
D
underwater volcanoes
18

Which statement describes one aspect of an earthquake’s magnitude?

A
It is measured by the Mercalli scale.
B
It is based on the size of seismic waves.
C
It is not usually affected by the amount of fault movement.
D
It is used to determine damage caused by earthquakes.
19

How long ago do scientists believe the continents formed Pangaea?

a
about 135 million years ago
a
about 180 million years ago
a
about 300 million years ago
a
about 4.5 billion years ago
20

Which features form along all types of plate boundaries?

f
faults
r
rift valleys
m
mountains
o
ocean ridges

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Lab: Plate Boundaries and Movement