La línea de costa

The video explains how erosion and deposition shape coastlines. Erosion, driven by sea and weather, forms cliffs, arches, and promontories by weakening rock structures. Deposition by constructive waves creates beaches, with their characteristics influenced by wave energy and local geology. Coastal drift, caused by wind and waves, leads to the formation of tongues and tidal flats. These processes continuously alter the dynamic landscapes of coastlines.

What geological feature is formed when weathering weakens the earth's surface and waves attack the rocky face?

• A cliff

• A dune

• A lagoon

• A beach

What happens to an arch when it can no longer support the weight on top of it?

• It turns into a lagoon

• It collapses

• It forms a beach

• It becomes a dune

What determines whether a beach is sandy or pebbly?

• The type of marine life present

• The height of the tides

• The color of the water

• Wave energy and local geology

What is the term for the movement of material along the coast due to wind blowing at an angle?

• Marine erosion

• Coastal drift

• Tidal surge

• Wave refraction

What geographical feature is formed when silt is deposited in an area protected from waves?

• A sand dune

• A coral reef

• A tidal flat

• A cliff