Unit Test — Unit test Answers

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1
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How can humans help minimize the impact of earthquakes?

A
Increase regulations on fracking for oil and gas.
B
Increase the amount of water in reservoirs.
C
Increase the planting of trees and vegetations.
D
Increase the density of buildings in urban areas.
3

When were Earth’s landmasses first recognizable as the continents we know today?

A
10 million years ago
B
135 million years ago
C
180 million years ago
D
300 million years ago
4

Which feature of Earth is created at mid-ocean ridges?

A
new island chain
B
new underwater caves
C
new continents
D
new ocean floor
5

Which statement describes the damage that results from earthquakes?

A
Amount of damage can be used to determine intensity.
B
Damage can be measured using the Richter scale.
C
The amount of damage increases as magnitude decreases.
D
Earthquakes that cause maximum damage are the most common.
6

The image shows a mountain peak in Asia.

Question illustration
A
compression
B
gravity
C
shearing
D
tension
7

How do geologists study direct evidence of Earth’s interior?

A
by collecting drill core samples of Earth’s crust
B
by measuring seismic wave activity
C
by analyzing how living things survive
D
by recording changes in climate patterns
9

Which describes the cause and impact of a flood?

A
A small volume of water from light rain that damages lakes.
B
Rising water levels from heavy rain that improve habitats.
C
A small volume of water from light rain that helps support buildings and roads.
D
Rising water levels from heavy rain that damage infrastructure.
11

Which type of stress causes rocks to fold?

A
compression
B
shearing
C
strike-slip
D
tension
12

Which statement describes one of Wegener’s ideas that contributed to the theory of continental drift?

A
The continents drifted apart due to repeated meteor impacts.
B
The continents were once connected as one landmass.
C
The continents have moved apart very quickly due to earthquakes.
D
The continents are magnetically pulled toward or pushed away from one another.
13

Which is one step that geologists use to find the epicenter of an earthquake?

A
They look at data from at least one seismograph.
B
They measure the difference between arrival of P waves and S waves.
C
They draw circles around the epicenter from three locations.
D
They obtain information about the intensity of earthquakes from seismographs.
14

Which statement best describes the theory of plate tectonics?

A
Plates sometimes move closer to one another.
B
Sections of Earth that shift are part of Earth’s asthenosphere.
C
Sections of Earth’s continents are in slow, constant movement.
D
Parts of the ocean floor move as they are carried by rift valleys.
15

Which statement describes one event that happens at deep-ocean trenches?

A
Crust is formed.
B
Mountains are formed.
C
Seafloor spreading occurs.
D
Denser plates slide under lighter plates.
16

What may occur when convergent boundaries interact?

A
formation of island chains
B
creation of mid-ocean ridges
C
creation of convection currents
D
formation of rift valleys
17

The image shows mountains in Alaska.

Question illustration
A
A syncline is visible.
B
An anticline is visible.
C
These mountains show no evidence of folding.
D
These mountains likely formed from normal faults.
18

Sophia was studying with Maalik about the layers of the Earth. They were given several different statements about the layers.Which statement about the layers would they identify as correct?

A
The outer core is less than 70 km in thickness.
B
The crust assists in forming Earth’s magnetic field.
C
The mantle is denser than the crust.
D
Pressure increases when moving from the core to the crust.

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