# What happens to waves when there is refraction in bays quizlet?

## What happens to waves when there is refraction in bays quizlet?

Therefore as a wave approaches, it’s modified (refracted) due to the frictional drag from the seabed (shallower water), halting the motion the waves. The waves are refracted so their energy is concentrated around headlands and reduced around bays.

## What is wave refraction impact of bays and headlands?

Wave refraction involves waves breaking onto an irregularly shaped coastline, e.g. a headland separated by two bays. Waves drag in the shallow water approaching a headland so the wave becomes high, steep and short. The part of the wave in the deeper water moves forward faster causing the wave to bend.

What does wave refraction do to a coastline?

The net effect of refraction on irregular coastlines is to straighten them out. As the waves crash against the headlands, they erode sediment, then deposit it as sand in the bays. So the waves perform a double action, simultaneously wearing away the headlands and filling up the bays.

### Does wave refraction form bays?

This slows down the inshore part of the wave and makes the wave “bend.” This bending is called refraction. Wave refraction either concentrates wave energy or disperses it. In quiet water areas, such as bays, wave energy is dispersed, so sand is deposited.

### What causes wave refraction?

Refraction – as waves approach shore, they bend so wave crests are nearly parallel to shore. Waves refract due to the friction of the continental shelf and the water which slows them down and causes the waves to face more directly to the shore and the wave crests bend.

What happens during refraction?

When light travels from air into water, it slows down, causing it to change direction slightly. This change of direction is called refraction. When light enters a more dense substance (higher refractive index), it ‘bends’ more towards the normal line.

#### What are refraction waves?

NARRATOR: Refraction is the change in direction of a wave as it passes from one medium to another. Refraction is caused by the wave’s change of speed. For example, water waves moving across deep water travel faster than those moving across shallow water.

#### What is wave refraction why does it occur in ocean waves quizlet?

Q: What causes wave refraction? Refraction – as waves approach shore, they bend so wave crests are nearly parallel to shore. Waves refract due to the friction of the continental shelf and the water which slows them down and causes the waves to face more directly to the shore and the wave crests bend.

How does wave refraction affect longshore drift and beach erosion?

Wave energy is concentrated on headlands due to wave refraction; erosion is maximum. Longshore currents and beach drift diverge from the headlands due to wave refraction. Headland cliffs are cut back by wave erosion and the bays are filled with sand deposits until the coastline becomes straight.

## How does refraction affect wave action along the shore?

Waves are responsible for the movement of sediment along the shoreline. What effects does wave impact have on shorelines? Because of refraction, wave energy is concentrated against the side sand ends of headlands that project into the water, whereas wave action is weakened in bays.

## What occurs in a bay?

A bay is a body of water partially surrounded by land. A bay is usually smaller and less enclosed than a gulf. Plate tectonics, the process of continents drifting together and rifting apart, causes the formation of many large bays.