AnswersSS4 PGCPS EARTH SPACE OC SUMMER 2027 - 794243Water and Wind Erosion

Water and Wind Erosion — Unit test Answers

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A small, jagged particle with a density of 1.2 g/cm3 deposits on the ground before a large, round particle with a density of 0.82 g/cm3.Which most likely influences the rate of deposition of the jagged particle?

A
large size
B
low density
C
high density
D
irregular shape
2
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Which process involves wind moving loose sediment?

A
abrasion
B
deflation
C
impact
D
plucking
3

Otis is making a poster about how to preserve sand along the beach. Which of the following suggestions should Otis include on his poster?

A
Build a seawall near the coastline.
B
Put sandbags along the coastline.
C
Build a fence along the coastline.
D
Plant more grass near the coastline.
4

southern tropicsnorthern tropicsnorthern temperate zonesouthern temperate zone

A
southern tropics
B
northern tropics
C
northern temperate zone
D
southern temperate zone
5

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.
6

Which rocks will likely weather the least?

A
rocks that are soft
B
rocks with a porous surface
C
rocks that are in a dry climate
D
rocks with minerals that dissolve easily
7

Sydney drew a flow chart to illustrate the nitrogen cycle.

Question illustration
A
X: Producers undergo photosynthesis.Y: Nitrogen compounds are released into the air.
B
X: Nitrogen compounds are released into the air.Y: Producers undergo photosynthesis.
C
X: Free nitrogen is in the atmosphere.Y: Producers absorb nitrogen compounds through their roots.
D
X: Producers absorb nitrogen compounds through their roots.Y: Free nitrogen is in the atmosphere.
8

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.
9

Which term describes erosion?

A
creates small particles
B
hardens rock fragments
C
transports solid materials
D
dissolves rock components
10

Which best explains why a thick tropical forest filled with large plants typically has a lot of water vapor in the air?

A
The plants undergo transpiration.
B
The plants undergo condensation.
C
The plants prevent water from evaporating.
D
The plants prevent water from becoming runoff.
11

The diagram illustrates the water cycle.

Question illustration
A
U
B
W
C
X
D
Y
12

Which phrase describes one main feature of the atmosphere?

A
protects Earth’s surface
B
includes organisms in the air, on land, and in water
C
consists of rocks, minerals, landforms, and Earth’s interior
D
comprises oceans, lakes, rivers, streams, and groundwater
13

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

A
earthquakes
B
hurricanes
C
snowfalls
D
thunderstorms
14

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
15

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

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