This App will help you to avoid any unwanted slip-ups in the exam. Although most of the reminders are common sense, but from the evidence students still need reminding of them. Read through the tips and take note of the most relevant ones before tackling your exam.
Coastal Transportation and Deposition
Long shore Drift
- Material is moved along the coastline by the waves.
- Waves will often approach the coast at an angle, carrying material with them. This is carried up on to the beach by the swash.
- The material is then dragged out to sea by the backwash, but this time it travels at right angles to the beach, as it will roll down the steepest gradient.
- This movement will slowly transport material laterally along the coast.
Long shore drift is the overall process of transportation, however the material actually moves through the four transportation processes seen in rivers. These depend on the size of sediment:
i) Traction - the rolling of large material along the sea floor by the waves.
ii) Saltation - the bouncing of slightly lighter material along the sea floor.
iii) Suspension - Small particles of material carried by the water.
iv) Solution - Material is dissolved and carried by the water.
- The process associated with constructive waves.
- Material is dropped by waves once they lose energy, either by rolling up a beach or where a river estuary causes a disruption to the normal movement of material along the coast.
- Creates features such as beaches, spits, bars and tombolos.