AnswersGCS 2025-2026 Earth Environmental Science CRTopographic Maps

Topographic Maps — Unit test Answers

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1
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The image shows a topographic map.

Question illustration
A
close to Nixon Lane
B
in the lowland marsh
C
at the Colorado River
D
near a major highway
2
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How do oxbow lakes form?

A
Rivers are dammed, and the water builds up, creating a lake.
B
Runoff pools in areas of low elevation, creating a temporary lake.
C
Rivers wear away banks until the bank is broken and the river flows straight.
D
Glaciers leave deep channels in the ground, which fill with water and become a lake.
3

Which process involves wind moving loose sediment?

A
abrasion
B
deflation
C
impact
D
plucking
4

Which event can cause slumps, landslides, and mudflows to occur?

A
earthquakes
B
hurricanes
C
snowfalls
D
thunderstorms
5

Which action would best help prevent groundwater erosion?

A
using breakwaters
B
packing down soil
C
building drains with outlets
D
increasing the slopes of riverbanks
6

Which information does a compass rose provide on a map?

A
direction
B
distance
C
features
D
symbols
7

Which event occurs after Earth’s surface experiences weathering?

A
Wind carries sediments to a new location.
B
Ice forms cracks in large rocks.
C
Moving water breaks sediments into pieces.
D
Surface materials wear down into sediment.
8

Which type of deposition creates sandbars?

A
glacial
B
river
C
wave
D
wind
9

How is the elevation displayed on a topographic map?

A
contour lines
B
contour intervals
C
index contours
D
intermediate contours
10

Which describes bedrock?

A
consists of solid rock
B
lies directly above the soil layer
C
does not contain weathered rock
D
forms from decomposed material
11

Topography maps are best used for which activity?

A
designing roads for a new town
B
sailing across one of the Great Lakes
C
estimating the number of trees in an area
D
determining the warmest beach to visit
12

A loose pile of rocks and soil travels in a single large mass. The mass moves a short distance downhill.Which mass movement does this describe?

A
creep
B
erosion
C
landslide
D
slump
13

Which displays Earth’s curved surface on a flat model?

A
globe
B
grid
C
meridian
D
projection
14

Which correctly lists the three types of rock particles that make up soil?

A
air, clay, and sand
B
clay, water, and silt
C
sand, clay, and silt
D
silt, water, and air
15

Which is a common type of map projection?

A
distorted
B
digital
C
curved-surface
D
equal-area

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