Podcast
Questions and Answers
What is the primary factor that influences the direction of longshore drift?
What is the primary factor that influences the direction of longshore drift?
Dominant prevailing wind direction
What is the term for the distance over which the wind blows across the surface of the sea?
What is the term for the distance over which the wind blows across the surface of the sea?
Fetch
What is the primary mechanism by which spits are formed?
What is the primary mechanism by which spits are formed?
The deposition of sediment by longshore drift
What type of waves are responsible for building up beaches?
What type of waves are responsible for building up beaches?
Signup and view all the answers
What is the term for the process of sediments or rock particles being deposited onto a surface by natural forces?
What is the term for the process of sediments or rock particles being deposited onto a surface by natural forces?
Signup and view all the answers
What is the process of erosion that involves the scraping and rubbing of rocks by sediment particles in the water?
What is the process of erosion that involves the scraping and rubbing of rocks by sediment particles in the water?
Signup and view all the answers
What is the term for the dissolved rocks like chalk and limestone due to the presence of carbonic acid in seawater?
What is the term for the dissolved rocks like chalk and limestone due to the presence of carbonic acid in seawater?
Signup and view all the answers
What role do beaches play in terms of tourism and coastal economies?
What role do beaches play in terms of tourism and coastal economies?
Signup and view all the answers
How do bars influence coastal dynamics?
How do bars influence coastal dynamics?
Signup and view all the answers
What is the term for the wearing away of soil and rock by natural forces like water and wind?
What is the term for the wearing away of soil and rock by natural forces like water and wind?
Signup and view all the answers
What is the purpose of hard engineering in coastal management?
What is the purpose of hard engineering in coastal management?
Signup and view all the answers
What type of landform is created by the dissolution of soluble rocks like limestone by acidic water?
What type of landform is created by the dissolution of soluble rocks like limestone by acidic water?
Signup and view all the answers
What is the driving force behind the circular motion of magma in the mantle?
What is the driving force behind the circular motion of magma in the mantle?
Signup and view all the answers
What is the term for the remnants of sea cliffs eroded by wave action, with isolated pillars and bases?
What is the term for the remnants of sea cliffs eroded by wave action, with isolated pillars and bases?
Signup and view all the answers
What is the term for the process of new oceanic crust forming at mid-ocean ridges through volcanic activity?
What is the term for the process of new oceanic crust forming at mid-ocean ridges through volcanic activity?
Signup and view all the answers
What is the sudden shaking of the ground caused by the release of energy from tectonic plates?
What is the sudden shaking of the ground caused by the release of energy from tectonic plates?
Signup and view all the answers
Study Notes
Graph Essentials
- A graph typically includes a border, orientation, legend, title, scale, and source.
Longshore Drift
- Dominant prevailing wind direction pushes waves at an angle, creating a swath.
- Sediment is picked up and dragged back into the sea through backwash.
- Fetch is the distance in which the wind blows over the sea.
- Waves are formed by wind blowing across the surface of the sea, creating small ripples that develop into waves.
- Constructive waves have little energy and are responsible for building up beaches.
- Destructive waves have a lot of energy, breakwaters, and a weak swash but a strong backwash.
Coastal Erosion
- Abrasion: relative particles in the water scrape and rub against the rock, removing small pieces.
- Hydraulic action: waves crashing against rocks and compressing the air into the cracks.
- Attrition: eroded particles in the water smash into each other and break into smaller pieces, with edges getting rounded off.
- Corrosion: sea water dissolved rocks like chalk and limestone using carbonic acid.
Erosion Landforms
- Caves: created by the dissolution of soluble rocks like limestone by acidic water.
- Arches: formed by the erosion of softer rock beneath harder layers.
- Stacks and Stumps: remnants of sea cliffs eroded by wave action, with stacks being isolated pillars and stumps being the base of eroded stacks.
- Spits: formed by the deposition of sediment by longshore drift, extending from the shoreline into open water.
Deposition Landforms
- Beaches: serve as recreational areas, wildlife habitats, and buffers against erosion, and are important for tourism and coastal economies.
- Spits: provide protection to coastlines.
- Bars: influence coastal dynamics by affecting wave patterns and sediment transport.
- Tombolos: connect islands or offshore rocks to the mainland, providing accessibility and sometimes acting as protective barriers against wave action.
- Sand dunes: stabilize coastal ecosystems, protect inland areas from storm surges and erosion, and provide habitats for specialized plant and animal species.
Plate Tectonics
- Convection currents: circular motion of magma in the mantle driven by heat from the Earth's core, responsible for the movement of tectonic plates.
- Plate boundaries: include constructive, destructive, and transform boundaries.
- Continental drift: theory proposing that continents were once joined as Pangaea and drifted to their current positions.
- Sea floor spreading: new oceanic crust forms at mid-ocean ridges through volcanic activity, supporting plate tectonics.
- Fold mountains: formed by the folding of rock layers due to tectonic compression.
- Earthquakes: sudden shaking of the ground caused by the release of energy from tectonic plates.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
This quiz covers concepts related to coastal geography, including longshore drift, wave formation, and coastal features such as swash and backwash.
