Coastal Erosion

Coastal Erosion

Multiple Choice

Water seeps into a crack in a rock. As the water freezes, it expands and increases the size of the crack in the rock.

• Physical

• Chemical

• Biological

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Water, wind, gravity, ice, plants are all part of this kind of weathering

• Chemical
• Mechanical
• Humid

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plants produce weak acids that slowly dissolve the rock they are growing on

• chemical weathering
• mechanical weathering
• erosion
• deposition

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rock is broken by the freezing and thawing of ice

• chemical weathering
• mechanical weathering
• erosion
• deposition

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the breakdown or decomposition of rock that takes place when minerals change through chemical processes

• chemical weathering
• mechanical weathering
• erosion
• deposition

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The movement of weathered material (sediment) is called?

• weathering
• erosion
• deposition
• cementation

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Grinding away of rock by rock particles carried by wind, water, ice and gravity is

• abrasion

• gravity

• carbon dioxide

• thermal expansion (temperature)

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What is mechanical weathering?

• Process through which rocks are physically broken into smaller pieces

• Rocks are broken down through chemical changes.

• Rocks are worn away from acid in plant roots.

• Rocks broken down by machinery

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The process of breaking up rocks on Earth's surface is called...

• sediment

• erosion

• weathering

• deposition

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Which of these is an example for hard rock?

• chalk

• granite

• clay

• limestone

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Waves are generated by

• wind blowing over water

• sun blowing on the sea

• tidal movements

• rotation of the Earth

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What is the first stage in a stack formation?

• Arch is formed
• Cave is formed
• Line of weakness in rock
• Stump is formed

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Which erodes quicker?

• Hard rock
• Soft rock

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What is the first stage in a stack formation?

• Arch is formed

• Cave is formed

• Line of weakness in rock

• Stump is formed

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Sea caves are coastal landform made by

• Erosion

• Deposition

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What is this type of wave?

• Coast building - constructive

• Coast destroying - destructive

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What is this type of wave?

• Constructive wave

• Destructive wave

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I happen when the waves don't have enough energy to carry sediment

• Deposition
• Erosion
• Swash
• Backwash

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This is a

• Headland
• Stack
• Arch
• Bay

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When swash is stronger than backwash it creates a

• Constructive wave
• Destructive wave
• Water layer weathering
• Plunging wave

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The type of erosion that occurs when pebbles bang together

• Abrasion
• Attrition
• Hydraulic action
• Solution

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The movement of water up the beach after the breaking of a wave is...

• Swash
• Backwash

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With a ................................... wave, the swash is stronger than the backwash.

• destructive

• constructive

• swash

• backwash

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What am I? I have a very strong backwash which removes material from the beach.

• A deconstructive wave.
• A constructive wave.
• The local council.

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What are constructive waves?

• Waves that are tall and frequent, crashing into shoreline, digging out chunks.
• Long and low waves, beginning far out in the sea, with a smooth gentle landing.
• The circular movement caused by wind and gravity fighting.
• When people wave their hand to aggresively destroy things.

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What are destructive waves?

• Waves that are tall and frequent, crashing into shoreline, digging out chunks.
• Long and low waves, beginning far out in the sea, with a smooth gentle landing.
• The circular movement caused by wind and gravity fighting.
• When people wave their hand to aggresively destroy things.

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What is backwash?

• Water that runs back into the ocean.
• Water that falls forward and moves up the shore.
• Tug of war between the drag of the wind and pull of gravity.
• Swirling of water in an area.

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What is swash?

• Water that runs back into the ocean.
• Water that falls forward and moves up the shore.
• Tug of war between the drag of the wind and pull of gravity.
• Swirling of water in an area.

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What is the erosional process in which rocks are pushed by waves up against the headland, eroding the cliff face further?

• Hydraulic action.
• Abrasion.
• Attrition.
• Solution.

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What is Erosion?

• When waves lose energy and leave sediments / sand along a coast.

• The wearing away of land, removal of beach rocks/sand by water or wind.

• An area of land that smells different to other places.

• An area that has a lot of wind.

Multiple Choice

Which is the correct order of Coastal landforms caused by weathering and erosion?

• Cave, stack, arch crack stumo

• crack, arch, cave, stack, stump

• Crack, cave, arch, stack, stump

• stack stump arch cave crack.

Multiple Choice

Attrition describes the process of

• When a hard rock grinds a softer rock into sand particles

• Fish grinding rocks with their teeth

• Sand being moved along the coastline

• Wave energy rubbing rocks against each other

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Attrition describes the process of

• When a hard rock grinds a softer rock into sand particles

• Fish grinding rocks with their teeth

• Sand being moved along the coastline

• Wave energy rubbing rocks against each other

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The lower section of this image displays a land form called

• Flat rock

• Table rock bed

• Exposed reef

• Wave cut platform

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Erosion has created the following land form

• Arch

• Cave

• Bridge

• Rainbow formation

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This is a 

• Stack
• Arch
• Wave cut platform
• Blowhole

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True or false? Sea Stacks are created by erosion and weathering.

• True

• False

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Bays are created by:

• Deposition

• Erosion

• Weathering

• Transportation

Multiple Choice

Identify the landform type.

• Sea Stack

• Sea Stump

• Arch

• Bay

Multiple Choice

Identify the landform.

• Sea arch

• Tombolo

• Sea Stack

• Stump