Waves
Tides
Coastal Features & Processes
100

This is the highest point of a wave

What is a crest?

100

The regular rise and fall of sea level caused by the Moon and Sun.

What are tides?

100

This process wears away rocks and cliffs by waves and currents.

What is erosion?

200

This type of wave is caused by an underwater earthquake.

What is a tsunami?

200

During a full or new moon, when tides are highest and lowest, these tides occur.

What are spring tides?

200

This flat, rocky surface forms at the base of a cliff as it erodes.

What is a wave-cut platform?

300

The distance between two wave crests is called this.

What is the wavelength?

300

The difference in height between high tide and low tide is called this.

What is the tidal range?

300

Sand carried along the coast in a zigzag pattern by angled waves.

What is longshore drift?

400

The formula C=λ/Tis used to calculate this property of a wave.

What is wave speed?

400

This type of tide occurs once a day with one high and one low tide.

What is a diurnal tide?

400

A narrow ridge of sand that extends from the coast into the water due to deposition.

What is a spit?

500

These three factors—wind speed, duration, and fetch— affect.

What is wave height?

500

These tides occur when the Moon and Sun are at right angles, producing the smallest tidal range.

What are neap tides?

500

This structure connects the mainland to an island, formed by sand deposition.

What is a tombolo?

M
e
n
u