4.4 Human Activity Flashcards

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1
Q

Name two hard engineering processes

A

Groynes and sea wall

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2
Q

Name two soft engineering techniques

A

Beach nourishment and slope stabilisation.

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3
Q

Give two positives about groynes

A

Good for tourists

Builds up beaches

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4
Q

Give two negatives about groynes

A

Looks ugly
Very expensive
Erosion is worse down shore

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5
Q

Two positives of sea walls

A

Reflects wave energy
Out to sea
Very effective

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6
Q

Two negatives of sea walls

A

Very expensive
Makes beach access hard
Looks ugly

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7
Q

Two positives of beach nourishment

A

Absorbs water
Relatively cheap
Looks natural

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8
Q

Two negatives of beach nourishment

A

Very high maintenance
Sediment washes out to sea
1/2 a million per km

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9
Q

Positives of slope stabilisation

A

Keeps cliff in place

Reduces mass movement

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10
Q

Negatives of slope stabilisation

A

Difficult to install

Up to one million for one slope

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11
Q

How does a storm surge occur

A

High tide is assisted by storm winds causes the water to be forced into the estuaries.

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12
Q

In the 2013 storm surge what were the losses

A

1400 homes flooded
100 million cost of damage
2 deaths

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