What is the process of attrition?

Definition: Attrition is an erosional process. Rocks and pebbles are carried in the flow of a river. They repeatedly knock into each other, which causes the rocks to erode or to break. As the rocks continue to collide, they erode more and more, getting smaller and smaller until they are only sediment.

What is the process of hydraulic action?

Hydraulic action – this is the sheer power of the waves as they smash against the cliff. Air becomes trapped in the cracks in the rock and causes the rock to break apart. Abrasion – this is when pebbles grind along a rock platform, much like sandpaper. Over time the rock becomes smooth.

What are the processes of erosion?

There are four main processes of erosion along the coast. These are hydraulic action, abrasion and corrasion, attrition and solution.

What is attrition wind erosion?

Attrition is a type of erosion that occurs when bed load erodes. It is characterized by wearing of land as well as the removal of dune sediments, rocks and other particles by the action of tidal currents, wave currents, high winds and other factors.

What is the process of river erosion?

Erosion There are four ways that a river erodes; hydraulic action, corrosion, corrosion and attrition. Hydraulic action – the force of the water wearing away the bed and bank of the river • Corrosion – the chemical reaction between the water and the bed and bank of the river, wearing it away.

What is abrasion and attrition?

Abrasion occurs as a result of two surfaces rubbing against each other resulting in the wearing down of one or both of the surfaces. However, attrition refers to the breaking off of particles (erosion) which occurs as a result of objects hitting against each other.

What is marine and coastal process?

The atmospheric processes include temperature, precipitation, and winds, while the major marine processes are waves and tides, together with water temperature and salinity. The coast also supports rich ecosystems, including salt marshes, mangroves, seagrass, and coral reefs.

What are the 3 coastal processes?

The three principle marine processes that influence coasts are erosion, transportation and deposition.

What are the 4 processes of coastal erosion?

Destructive waves erode through four main processes; Hydraulic Action, Compression, Abrasion and Attrition. Image credit: Jeff Hansen, U.S. Geological Survey. Hydraulic Action is the sheer force of water crashing against the coastline causing material to be dislodged and carried away by the sea.

How are waves formed geography?

What causes waves? Waves are created by the action of the wind blowing over the sea or ocean. The friction from the wind causes the surface water to move in ripples which eventually form full waves. The stretch of ocean water over which the wind blows is called the FETCH.

What is wave frequency?

The frequency of a wave refers to how often the particles of the medium vibrate when a wave passes through the medium. Frequency is a part of our common, everyday language.

What are the 3 types of mass movement?

There are four different types of mass movement:

• Rockfall. Bits of rock fall off the cliff face, usually due to freeze-thaw weathering.
• Mudflow. Saturated soil (soil filled with water) flows down a slope.
• Landslide. Large blocks of rock slide downhill.
• Rotational slip. Saturated soil slumps down a curved surface.

What is wavelength in geography?

The wavelength of a wave is the horizontal distance between two crests or troughs. For wind generated ocean waves, it can vary from a few tens of centimetres to hundreds of metres. The wavelength is sometimes referred to using the lowercase Greek letter lambda (λ).

What control the waves?

The gravitational pull of the sun and moon on the earth causes the tides which are actually tidal waves.

How are waves formed a level?

Waves are generated by wind blowing over the sea. The characteristics of waves are determined by the strength of the wind, its duration and fetch (distance a wave travels). The stronger the wind the greater the friction on the surface of the sea and therefore the bigger the wave.

Does water move in a wave?

Quote from video:The crashing waves. But what even our ocean waves and how do they work waves are caused by a number of things and contain massive amounts of energy in. Fact just two percent of the total energy of

Can the ocean be still?

The ocean is never still. Whether observing from the beach or a boat, we expect to see waves on the horizon. Waves are created by energy passing through water, causing it to move in a circular motion.

What is the difference between tide and wave?

Tides are created by rising and falling sea levels through the influence of gravity, waves are created when many winds and water influences interact with each other.

What is the top of a wave called?

the crest

The highest surface part of a wave is called the crest, and the lowest part is the trough. The vertical distance between the crest and the trough is the wave height.

What is the lip of the wave?

Lip: The lip is when the wave starts to curl over. The larger the wave the more intense and “heavy” the lip can be. Tube: You would have seen many great surfers riding the tube. This is the barrel that has formed one the lip has curled over and is hitting the water creating the impact zone.

What are the 4 types of waves?

Types of Waves – Mechanical, Electromagnetic, Matter Waves & Their Types.

What is the white of a wave called?

White water (or Foam): After the wave breaks, it transforms itself into “whitewater”, also called “foam”.

What are the 7 types of waves?

The electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays. To tour the electromagnetic spectrum, follow the links below!

What is the foam of a wave called?

If it’s part of the water, it’s generally called sea spray. The turbulent water generates tiny bubbles of water. When the bubbles pop, the aerosolized droplets of water make it look white and frothy. On the other hand, if it’s a solid that can be washed up on the beach, it’s called Sea foam, beach foam, or spume.

What are wave curls called?

Amped – feeling excited, pumped up. Ankle slappers – waves that are too small to ride. Backdoor – going inside a tube/barrel, also known as the curl of the wave, from behind its peak. Bailing – Jumping off your board into the water in order to avoid a bad encounter.

What is a female surfer called?

There is no specific term for a female surfer. You can call a girl who surfs just “surfer”, although, there are terms like gurfer, wahine that are used to refer to a female surfer.

What do surfers call a big wave?

Set waves are large waves that come in groups of two or more. They are generally the most highly sought after waves in any swell. This is because they offer more power and longer rides. Speaking like a surfer will involve talking about set waves.