What is coastal erosion ks2?
Coastal erosion occurs when the sea wears away the land. Erosion is so dramatic here because the cliffs along the coast are made from boulder clay, which is soft and crumbly rock. Heavy rains and sea storms make the erosion worse.
What is the difference between coastal erosion and coastal deposition?
Two main processes are responsible for this; erosion and deposition. Coastal erosion is the breaking down and carrying away of materials by the sea. Deposition is when material carried by the sea is deposited or left behind on the coast. Coastal erosion takes place with destructive waves.
What is coastal erosion BBC Bitesize?
Coastal erosion is the wearing away and breaking up of rock along the coast. Destructive waves erode the coastline in a number of ways: Hydraulic action: Air may become trapped in joints and cracks on a cliff face. Solution: Acids contained in sea water will dissolve some types of rock such as chalk or limestone.
How deposition and erosion occurs in the coast?
When the sea loses energy, it drops the sand, rock particles and pebbles it has been carrying. This is called deposition. Deposition happens when the swash is stronger than the backwash and is associated with constructive waves.
What is deposition KS2?
Deposition is the processes where material being transported by a river is deposited. Deposition occurs when a river loses energy. This can be when a river enters a shallow area (this coud be when it floods and comes into contact with the flood plain) or towards its mouth where it meets another body of water.
What is deposition geography KS2?
Landforms created by deposition Deposition occurs when the sea has less energy, eg in sheltered bays . Material that has been eroded from the coast is transported by the sea and later put down. Longshore drift is a process of transportation that shifts eroded material along the coastline.
What are the 4 types of erosion in geography?
Rainfall produces four types of soil erosion: splash erosion, sheet erosion, rill erosion, and gully erosion.
What is deposition geography ks2?
What is erosion geography ks2?
Erosion is a geological process in which natural materials are worn away and transported by environmental features such as wind and water. It is similar to weathering, which is a process that wears down (or ‘weathers’) rock, but does not result in that dissolved material being transported.
What is an example of deposition in geography?
Depositional landforms are the visible evidence of processes that have deposited sediments or rocks after they were transported by flowing ice or water, wind or gravity. Examples include beaches, deltas, glacial moraines, sand dunes and salt domes.
What is erosion ks1?
Over time, waves erode a notch at the base of a cliff in a process called undercutting. When this notch becomes too heavy it will break off and crash into the sea. Different coastal features such as caves, arches and stacks are all formed by erosion.