Unit 5 Flashcards
Which of the following is one effect storm waves have on a beach?
(Lesson 1)
Movement of beach sand to a sandbar
How are waves related to shifting shorelines?
Lesson 1
Waves can cause shifting shorelines.
Which of the following can cause beach erosion? Select the two correct answers.
shifting shorelines
sandbars
storm waves
ocean currents
dune vegetation
(Lesson 1)
storm waves
ocean currents
How are jetties and groins similar in how they manage beach erosion?
(Lesson 2)
Both are hard structures that keep sand on the beach.
How are vegetation management and beach nourishment similar in the ways they combat beach erosion?
(Lesson 3)
Both relocate materials back to the shore.
Which of the following is a potential drawback of using jetties to prevent beach erosion?
(Lesson 3)
Beach erosion may increase on the downdrift side of the jetties.
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)
how long beaches will be closed during the project
how they will pay for the cost of the project
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)
$8.33 per cubic yard
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)
to mitigate beach erosion for a period of time
to replenish sand on a beach
Which of the following effects do shifting shorelines from beach erosion have on beaches?
(Lesson 3)
They cause narrower beach areas.
Which issue does terrace farming help solve?
Lesson 4
heavy rains washing away soil from mountainous farms
In which situation would hydroponics be most useful for sustainable farming?
(Lesson 4)
a desert area with limited rainfall
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)
planting trees in between rows of crops
rotating crops each year
What cost should a farmer consider when deciding whether to adopt intercropping as a sustainable farming practice?
(Lesson 5)
increased labor expenses
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)
maintenance of soil’s nutrients
increased biodiversity
