Coastal Erosion Quiz

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.
  

Which of these coastal landforms is created by erosion?

• Cave
• Tombolo
• Beach
• Spit

What type of landform are the 12 Apostles?

• Wave cut platform
• Arch
• Stack
• Cave

What is the first stage of a stack forming from a head land?

• Cracks erode to form a cave.
• Hydraulic action creates small cracks in the headland/cliff face.
• The cave becomes wider and deeper.
• The waves cut through the cave and form an arch.

What is the most advanced stage of erosion of a headland?

• Cracks erode further to create a cave.
• The roof of an arch becomes too heavy and collapses.
  
• The cave becomes wider and deeper.
• The waves cut through the cave and form an arch.

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.

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.

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.

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.

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.