levo

Coastal Landscapes

Human impact on coastal landscape systems

  • 2 things to know
  • AS Unit 1

Overview

How offshore dredging damages a coastal system, how trampling degrades a sand dune and why river management inland can cause coastal erosion.

What you need to know

Answer each one before you reveal it.

Your recallNot started
Key term

Suggest why coastal management is increasingly planned for whole sediment cells.

Key term

Give two positive impacts of human activity on coastal landforms.

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    Give two positive impacts of human activity on coastal landforms.

    Model answer

    Dune stabilisation and replanting that rebuild a degraded dune system, and designation as a protected site that limits damaging development.

  2. 2

    How does beach nourishment have a positive effect on the coastal system?

    Model answer

    It restores sediment to a store that had been depleted, so the beach can once again absorb wave energy and supply material along the coast.

  3. 3

    Explain how offshore dredging damages a coastal system.

    Model answer

    Removing sediment from the sea bed cuts the supply that would have moved shoreward, and the deeper water lets larger waves reach the coast unbroken.

  4. 4

    Describe how trampling degrades a sand dune.

    Model answer

    Feet break the vegetation cover, the bare sand is exposed to the wind, and a blowout develops that enlarges as more sand is removed.

  5. 5

    How does building a marina or harbour arm alter longshore drift?

    Model answer

    The structure interrupts the movement of sediment along the coast, so material accumulates on the updrift side and the downdrift beach is starved.

  6. 6

    Explain why river management inland can cause coastal erosion.

    Model answer

    Dams and reservoirs trap sediment that would have reached the coast, so the sediment budget of the cell turns negative and its beaches shrink.

Other ways to work this

The same content, four other ways.

What is inside Levo

Six ways to work the same material.

1Closed book
2Open book
3Closed book

The 3-step method, run for you

Answer cold, learn it, then prove it stuck. Levo tracks the jump between your first attempt and your last.

Coastal Landscapes
Glaciated Landscapes
Tectonic Hazards
Changing Places

Cram a whole paper in one sitting

Sort every topic into what you know and what you do not, then drill only the weak ones.

Governments must win votes.
ruralurbanelite

Blank Blitz makes facts automatic

Rapid timed gap-fills on the terms and numbers you need to recall without thinking.

AFew coastal people recognised the signs.
BThe coasts were densely populated.
CMany communities were struck with no notice at all.

Build It gets the exam shape right

Assemble a full-mark answer from its marking points, in the order an examiner wants them.

The Mariana Trench reaches almost 11,000 m below sea level.
TrueFalse

Test It catches misconceptions

Spot the fault in a statement. The traps are the mistakes students actually make.

721941163128510

Brain Breaks between sessions

Short focus games to reset attention, so the next set lands better than the last.

Every question in Coastal Landscapes, on a schedule.

Attempt a question from memory, write the correct version, then attempt it again. Levo records the jump between your first attempt and your last, and brings each question back on the day you are due to forget it.

Or £46 a year, about £3.83 a month. Cancel anytime.