Identify the type of waves shown below.

Destructive Waves

Click to View the Answer
Click to View the Question

Destructive waves

Find out more about destructive waves.

Identify the type of waves shown below.
What causes waves?
Click to View the Answer
Click to View the Question

Waves are caused by the transfer of energy from the wind to the sea due to the friction of the wind on the water’s surface.

Find out more about waves.

What causes waves?
Describe the swash and backwash of a destructive wave.
Click to View the Answer
Click to View the Question

Weak swash, strong backwash.

Find out more about destructive waves.

Describe the swash and backwash of a destructive wave.
What word describes the movement of a wave up a beach?
Click to View the Answer
Click to View the Question

Swash

Find out more about waves.

What word describes the movement of a wave up a beach?
What is the fetch of a wave?
Click to View the Answer
Click to View the Question

The distance a wave has travelled.

Find out more about waves.

What is the fetch of a wave?

What is attrition?
Click to View the Answer
Click to View the Question

Attrition is when waves cause rocks and pebbles to bump into each other and break up.

Find out more about coastal erosion.

What is attrition?
Give an outline of what corrasion involves.
Click to View the Answer
Click to View the Question

Corrasion is when destructive waves pick up beach material (e.g. pebbles) and hurl them at the base of a cliff. Over time this can loosen cliff material forming a wave-cut notch.

Find out more about coastal erosion.

Give an outline of what corrasion involves.
Identify the main processes of coastal erosion.
Click to View the Answer
Click to View the Question

Corrasion, abrasion, hydraulic action, attrition and corrosion/solution.

Find out more about the processes of coastal erosion.

Identify the main processes of coastal erosion.
Give an outline of what abrasion involves.
Click to View the Answer
Click to View the Question

Abrasion occurs as breaking waves, concentrated between the high and low watermarks, which contain sand and larger fragments wear away the base of a cliff or headland. It is commonly known as the sandpaper effect. This process is particularly common in high-energy storm conditions.

Find out more about coastal erosion.

Give an outline of what abrasion involves.
What is corrosion/solution?
Click to View the Answer
Click to View the Question

Corrosion/solution is when certain types of cliff erode as a result of weak acids in the sea.

Find out more about the processes of coastal erosion.

What is corrosion/solution?
Describe the processes of freeze-thaw weathering.
Click to View the Answer
Click to View the Question

Freeze-thaw weathering occurs when rocks are porous (contain holes) or permeable (allow water to pass through). Water enters the rock and freezes. The ice expands by around 9%. This causes pressure on the rock until it cracks. Repeated freeze-thaw can cause the rock to break up.

Find out more about weathering.

Describe the processes of freeze-thaw weathering.
What is mechanical weathering?
Click to View the Answer
Click to View the Question

Mechanical weathering is the breakdown of rock without changing its chemical structure (composition).

Find out more about weathering.

What is mechanical weathering?
What is weathering?
Click to View the Answer
Click to View the Question

Weathering is the breakdown of rock in situ by the action of rainwater, extremes of temperature, and biological activity.

Find out more about weathering.

What is weathering?
What is chemical weathering?
Click to View the Answer
Click to View the Question

Chemical weathering is the breakdown of rock through changing its chemical composition.

Find out more about weathering.

What is chemical weathering?
What is salt weathering?
Click to View the Answer
Click to View the Question

Salt weathering is when salt spray from the sea gets into a crack in a rock. It may evaporate and crystallise, putting pressure on the surrounding rock and weakening the structure.

Find out more about weathering.

What is salt weathering?
Identify the 4 main processes of coastal transportation.
Click to View the Answer
Click to View the Question

Solution, suspension, saltation and traction.

Find out more about coastal transportation.

Identify the 4 main processes of coastal transportation.
Describe how longshore drift transports material.
Click to View the Answer
Click to View the Question

Longshore drift happens when waves approach the beach at an angle. The swash (waves moving up the beach) carries material up and along the beach. The backwash (waves moving back down the beach) carries material back down the beach at right angles. This is the result of gravity. This process slowly moves material along the beach and provides a link between erosion and deposition. The material is transported through suspension, traction, solution and saltation. Longshore drift provides a link between erosion, transportation and deposition.

Find out more about longshore drift.

Describe how longshore drift transports material.
What is solution?
Click to View the Answer
Click to View the Question

Material is dissolved and carried by the water.

Find out more about coastal transportation.

What is solution?
What is traction?
Click to View the Answer
Click to View the Question

Traction – large pebbles and boulders are rolled along the seafloor.

Find out more about coastal transportation.

What is traction?
What is coastal deposition?
Click to View the Answer
Click to View the Question

Coastal transportation involves material being transported by the sea being deposited or dropped.

Find out more about coastal deposition.

What is coastal deposition?