Glaciers - habitation in the world

10 important questions on Glaciers - habitation in the world

What three factors determine the height and power of waves?

  1. the force of the wind
  2. the length of time the wind blows
  3. the distance travelled by the wave

What is the difference between a beach ridge (sand mass) and a coastal dune?

A beach ridge is the start of a dune. Beach ridges are created by breakers. They lie above sea level and are changed into dunes by wind.

What two exogenic forces cause the formation of coastal dunes

Coastal dunes are formed by sea and wind
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Write down one geological factor from each sphere which plays an important role in the formation of coastal dunes.

  • hydrosphere: sea water
  • atmosphere: wind
  • biosphere: vegetation

How can the geological factor ‘humans’ help to build dunes?

Humans can help to build dunes by planting beach grass

Where do you find the widest dunes in the Netherlands

The widest dunes in the Netherlands are on the Wadden Islands

How high is the highest dune

The highest dune is 56 metres.

How is the space between dunes filled?

The Hondsbosse Zeewering was built to fill the space.

What happens to the height of dunes when you go inland from the sea

The dunes decrease in height.

How is the soil used in young and old dunes

  • young dunes: young forest, heath and grass
  • old dunes: grassland, arable land, village

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