P2B 11Coastal Landforms from Deposition

What are deltas and how are they formed?

• Deltas are formed by the erosion of mountains and are found in high-altitude areas.

• Deltas are formed when a river carries sediment to the coast and deposits it beyond the river's mouth.

• Deltas are created by volcanic activity and are typically found near active volcanoes.

• Deltas are formed by the accumulation of sand in desert regions, leading to the creation of oases.

What are spits and how are they formed?

• Spits are long narrow ridges of sand and shingles deposited in shallow sections of coastlines, formed by the deposition of material transported by longshore drift.

• Spits are large boulders that are formed by volcanic activity along coastlines.

• Spits are underwater caves formed by the erosion of rock by waves.

• Spits are areas of land that are eroded away by strong tidal currents.

What are the two main movements involved in Longshore Drift?

• Swash (forward movement of water up the beach) and Backwash (water pulling material straight back down the beach slope)

• Surge (water crashing onto the beach) and Ebb (water receding from the beach)

• Tide (rise and fall of sea levels) and Current (horizontal movement of water)

• Splash (water splashing onto the beach) and Drain (water draining away from the beach)

What is Longshore Drift?

• A process that occurs when waves approach the shore at a right angle.

• The primary process responsible for transporting sand and shingle along the coastline, occurring when waves approach the shore at an angle.

• A method of fishing used along the coast.

• A type of coastal erosion caused by strong winds.

What are hooks or recurves in spits?

• Curved ends of a spit caused by wave refraction or wind.

• Straight extensions of a spit formed by sediment deposition.

• Vertical structures built to prevent erosion on beaches.

• Natural barriers that redirect river flow into the ocean.

What is a bar in coastal geography?

• A type of rock formation found on land.

• A type of spit that completely stretches across a river mouth or bay, formed by longshore drift depositing material across an opening.

• A shallow area of water near the shore.

• A man-made structure used for fishing.

What are the zones of a beach?

• Foreshore (area between low and high tide) and Backshore (lies beyond the high tide point).

• Foreshore (area between high tide and the dunes) and Backshore (area below the low tide).

• Foreshore (area above the high tide) and Backshore (area between the dunes and the sea).

• Foreshore (area between the sea and the dunes) and Backshore (area below the high tide).

What are the sources of beach material?

• Erosion of nearby cliffs, broken coral and shell fragments, river mouths, and plastic.

• Only river mouths and plastic waste.

• Sand from the ocean floor and seaweed.

• Only broken coral and shell fragments.

What are beaches and how are they formed?

• Beaches are formed by volcanic activity along the coast.

• Beaches are created by the erosion of cliffs and rocks.

• Beaches are fundamental coastal landforms caused by deposition, occurring where sand or shingles are deposited along the shoreline in shallow water or sheltered bays.

• Beaches are areas where freshwater meets saltwater, creating unique ecosystems.