4 coasts intro
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Coasts
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Definition?
The coast is where the land meets the sea.
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Why are coasts important?
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The majority of the world’s population and major cities are within 200 metres of sea level.
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Coasts are important to us.
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Coasts are important habitats.
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Coasts – People and the environment
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Coastal areas can be hazardous.
Coastal processes can affect people.
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People can affect coasts.
Coastal areas are managed and changed by people.
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Oil spills destroy coastal environments
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Coasts are dynamic systemsconstantly changing.
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WavesWaves
• Waves are the Waves are the agentagent of change. of change.
• Their energy erodes, transports and Their energy erodes, transports and deposits material along the coast.deposits material along the coast.
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Tides
• Every 12 hours 24 minutes the Earth rotates relative to the Moon. The gravitational pull of the Moon causes the rise and fall of the sea level.
• High and Low Tides.
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We will study…
Waves
Processes and landforms – erosion, transport and deposition
Management of the coast
Coral reefs (maybe)
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