costal landscapes and processes pt2 Flashcards
What is Longshore Drift?
The transportation of sediment along a beach, determined by the direction of the prevailing wind.
What are Lowlands?
An area of land that has a small relief, so tends to be flat and at a low elevation.
What is Mass Movement?
A large, downhill movement of material usually from a cliff-face, caused by gravity.
What is Mechanical Weathering?
The breakdown of rocks due to forces (such as freeze-thaw), not chemical reactions.
What is Metamorphic Rock?
Rock formed under intense pressure and heat, often close to tectonic plate boundaries.
What does Permeable mean?
A rock that allows water to pass through it.
What is Relief in geography?
The difference in the height of land for a particular region.
What is Rock Armour?
Large rocks or concrete blocks used as barricades to reduce marine erosion at the base of cliffs.
What is Saltation?
A form of sediment transportation where smaller rocks/pebbles are pushed along the seabed by currents.
What is a Salt Marsh?
An area where salt and minerals build up, allowing vegetation to establish and stabilize the marsh.
What is a Sand Dune?
A depositional landform where sand and sediment build up around driftwood, forming a ‘sand-hill’ over time.
What is a Sea Wall?
A hard-management coastal defense, a concrete wall built parallel to the sea front.
What is Sedimentary Rock?
Rock formed from the broken remains of sediment and other rocks that have compressed and cemented together.
What is Soft Management in coastal defense?
The use of natural materials and environmentally sustainable approaches to reduce coastal recession.
What is Solution in geology?
Slightly acidic water dissolves chemicals from a rock face and transports these dissolved materials.
