Ocean Circulation — Unit test Answers

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A scientist is observing surface groundwater features to determine sources of groundwater.Which is one surface feature that the scientist can observe and map?

A
spring
B
saturated zone
C
aquifer
D
water table
2
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Which process involves wind moving loose sediment?

A
abrasion
B
deflation
C
impact
D
plucking
3

Which feature separates watersheds?

A
basins
B
bays
C
ridges
D
rivers
4

Which type of deposition creates sandbars?

A
glacial
B
river
C
wave
D
wind
5

Which relatively flat feature of the ocean floor is in the open ocean and borders the continental shelf?

A
abyssal plain
B
mid-ocean ridge
C
continental slope
D
deep-ocean trench
6

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
7

Why is the unsaturated zone not filled with water?

A
It is below the water table and water stays above it.
B
It is clay and water pools above it.
C
It is granite and water flows around it.
D
It is permeable and water flows through it.
8

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
9

In which direction does wave energy travel in the ocean?

A
up and down
B
north and south
C
with the currents
D
toward the shore
10

Which zone within the open-ocean zone is home to the most organisms?

A
deep zone
B
surface zone
C
intertidal zone
D
transition zone
11

In a field, water flows down through the soil and then through a layer of loose rocks before the flow stops.What type of material did the water most likely encounter when it stopped?

A
a layer of granite
B
another soil layer
C
a layer of rocks with cracks
D
another layer of loose rocks
12

Which term describes erosion?

A
creates small particles
B
hardens rock fragments
C
transports solid materials
D
dissolves rock components
13

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.
14

What percentage of Earth’s water is fresh water?

A
3 percent
B
25 percent
C
75 percent
D
97 percent
15

Which statement explains one way that lakes form?

A
Lava flows block a river.
B
Streams flow into shallow areas.
C
Groundwater feeds into low-lying areas.
D
Grassy wetlands get covered by a stream.

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