River and Coastal Processes

___________________ takes place when the eroded material itself is worn down.

• Abrasion

• Attrition

• Hydraulic action

• Solution

______________ is a form of chemical erosion which affects calcareous (lime-rich) rocks.

• Abrasion

• Attrition

• Hydraulic action

• Solution

_________________ weathering is carried out by mollusks, sponges and urchins, and very important on low-energy coasts

• Freeze thaw

• Salt crystallization

• Slaking

• Biological

_________________ breakers are steep waves (large height relative to wavelength) associated with gentle beach gradients.

• Spilling

• Plunge

• Surging

• Destructive

It is also called forewash

• wave

• swash

• backwash

• longshore drift

It is the distance of open water a wave travels over

• Wavelength

• Amplitude

• Trough

• Fetch

____________________ refers to the change in speed and distortion of the wave fronts.

• Breakers

• Storm waves

• Wave refraction

• Fetch

Which of the following is not a source of sediment?

• River

• Glaciers

• Sleet

• Artificial beach replenishment

Which of the following is wind-blown deposit?

• Sand

• Pebbles

• Clay

• boulder

Which process is an action of swash and backwash?

• Longshore drift

• Wave refraction

• Erosion

• Weathering