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- Processes called erosion, mass movement and weathering break down and remove material from the coast. The material is moved along the coastline by the sea and deposited when there is energy loss.
www.bbc.co.uk/bitesize/guides/zt6r82p/revision/1Coastal processes - AQA Wave types - constructive and destructive
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There are two different types of wave - constructive and destructive. They can affect the coastline in different ways. When a wave reaches the shore, the water that rushes up the beach is known...
- Erosional Landforms
Learn about and revise coastal landforms, whether caused by...
- Erosional Landforms
What are destructive waves? Destructive waves destroy beaches. The waves are usually very high, have a short wavelength and are very frequent. They have a steep front and are typically over 1 metre tall. As destructive waves approach the coast, they gain height, plunge onto a steep beach, and do not travel far up it.
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Our Earth is ever changing. Some of these changes, like the creation of the Grand Canyon, take millions of years to happen, and some of them are catastrophic changes that occur in seconds. These changes to our Earth can be categorized as either constructive forces or destructive forces.
Some changes to the Earth take place in a matter of seconds instead of millions of years. The main quick constructive force is a volcano. A volcano that erupts violently can send lava and ash shooting out within seconds. When that lava cools, it hardens into new rock.
Destructive forces break down land. The two main forces that break down land slowly are weathering and erosion. Weathering is the breaking down of rocks due to forces such as wind and water. The pieces of rock are then moved elsewhere through the process of erosion. Weathering and erosion take millions of years to have an effect on the Earth, but t...
Quick destructive forces are forces such as earthquakes and tsunamis that can change the surface of our Earth in seconds. Tsunamis can flatten the Earth and erase hills. A tsunami will take thousands of feet of Earth and drag it back to the ocean floor. Earthquakes can cause the Earth to crack, causing sinkholes or other such phenomena. Quick destr...
Students are encouraged to use other specialist geographical vocabulary in their answers as well as the terms listed here. The 3 terms below are relevant to a number of topics, so are defined here to avoid duplication. The acronyms for these terms will be stated on the front cover of examination papers where relevant.
Intense earthquake shaking compacts the loose sediment together, forcing water between the sediment out and upwards. This undermines foundations, and causes buildings to sink, tilt and often collapse. In some earthquakes (e.g. Japan (2011?)) tilts of up to 60 degrees have been recorded.
Erosion is the wearing away of rock along the coastline. Destructive waves. are responsible for erosion on the coastline. There are four types of erosion: Hydraulic action - this is the...
Earth’s surface changes over short and long periods of time. Constructive forces cause new features to form by volcanic activity or uplift of the crust. Existing landforms are modified by destructive forces, perhaps even eroded away by water, wind, ice, and gravity.
