Unit 5 Flashcards

1
Q

Which of the following is one effect storm waves have on a beach?

(Lesson 1)

A

Movement of beach sand to a sandbar

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2
Q

How are waves related to shifting shorelines?

Lesson 1

A

Waves can cause shifting shorelines.

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3
Q

Which of the following can cause beach erosion? Select the two correct answers.

shifting shorelines

sandbars

storm waves

ocean currents

dune vegetation

(Lesson 1)

A

storm waves

ocean currents

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4
Q

How are jetties and groins similar in how they manage beach erosion?

(Lesson 2)

A

Both are hard structures that keep sand on the beach.

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5
Q

How are vegetation management and beach nourishment similar in the ways they combat beach erosion?

(Lesson 3)

A

Both relocate materials back to the shore.

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6
Q

Which of the following is a potential drawback of using jetties to prevent beach erosion?

(Lesson 3)

A

Beach erosion may increase on the downdrift side of the jetties.

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7
Q

A town is looking at multiple solutions for its beach erosion problem. Which factors of beach nourishment should the town consider when making a decision? Select the two correct answers.

how cold the water temperature is at the time of pumping

how long beaches will be closed during the project

how many people drive near the beaches

how they will pay for the cost of the project

how long it will take the new sand to dry

(Lesson 3)

A

how long beaches will be closed during the project

how they will pay for the cost of the project

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8
Q

A city spends $15 million on a beach nourishment project that adds 1.8 million cubic yards of sand to 3 miles of beach. What is the cost per cubic yard of sand?

(Lesson 3)

A

$8.33 per cubic yard

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9
Q

What is the purpose of beach nourishment? Select the two correct answers.

to remove sand from a beach to offshore

to help ocean life survive after beach erosion

to mitigate beach erosion for a period of time

to stop all beach erosion from occurring

to replenish sand on a beach

(Lesson 3)

A

to mitigate beach erosion for a period of time

to replenish sand on a beach

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10
Q

Which of the following effects do shifting shorelines from beach erosion have on beaches?

(Lesson 3)

A

They cause narrower beach areas.

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11
Q

Which issue does terrace farming help solve?

Lesson 4

A

heavy rains washing away soil from mountainous farms

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12
Q

In which situation would hydroponics be most useful for sustainable farming?

(Lesson 4)

A

a desert area with limited rainfall

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13
Q

Which of the following are sustainable farming techniques? Select the two correct answers.

planting trees in between rows of crops

planting a single crop over a large area

limiting agriculture to rural areas

tilling soil frequently

rotating crops each year

(Lesson 4)

A

planting trees in between rows of crops

rotating crops each year

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14
Q

What cost should a farmer consider when deciding whether to adopt intercropping as a sustainable farming practice?

(Lesson 5)

A

increased labor expenses

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15
Q

Which of the following are possible benefits of alley cropping in the rain forest? Select the two correct answers.

maintenance of soil’s nutrients

increased use of chemical fertilizers

increased biodiversity

quick results

decreased carbon storage

(Lesson 5)

A

maintenance of soil’s nutrients

increased biodiversity

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