Wind and Wave Erosion. How is wind abrasive? It carries sand grains that grind and scour anything that they hit.

Slides:

Advertisements

Similar presentations

Chapter 9, Section 3 Ocean Shoreline.

Advertisements

CH 16 The Dynamic Ocean Ocean water is in constant motion and powered by many forces Forces include wind, Coriolis, gravity, density differences Ocean.

Chapter 12 Wind, Waves & Shoreline Currents BFRB Pages &

Waves, Beaches, and Coasts Prepared by Betsy Conklin for Dr. Isiorho.

COASTAL LANDFORMS.

Chapter 7: Erosion and Deposition

Wave Action Chap 11, Sec 2. Essential Questions (Chap 11, Sec 2) 1. How does a wave form? 2. How do waves change near the shore? 3. How do waves affect.

FEATURES OF SEA EROSION AND DEPOSITION

Ocean Waves Text Book Page #

The Sea Creator and Destroyer.

Section 2: Wave Erosion Preview Key Ideas Shoreline Erosion Beaches

1.5Understand how ocean waves and currents change the face of coastal areas.

Definitions of Coastal Regions: The shore is the area on the coast which covers the furthest low tide mark to the highest elevation where waves affect.

16.3 Shoreline Processes and Features

Waves and Wind Chapter 3 Section 3.

Erosion by Wind and Waves Ch. 16. Wind Deposition when the wind stops, it drops its load.

Coastal Processes ~ erosion, transport & deposition

By Wind and Waves. Review Any natural process that removes sediments and carries them away from one place to another is called erosion. Gravity is the.

OCEAN MOTION Coulter. Most waves form when winds blowing across the water’s surface transmit their energy to the water. Wave-movement of energy through.

Unit 1: Land and Water Forms Wearing Down Landforms Wind and Waves

Wind Erosion Glencoe Earth Science.

The Work of Waves and Wind Objectives: Explain the characteristics of ocean waves and tides Present coastline features of erosion, transport and deposition.

Unit 1 Lesson 3 Erosion and Deposition by Water

Aim: How do waves cause erosion? I. Wave – caused by wind A. The size of a wave is determined by wind speed, the length of time the wind blows in one.

Wave Erosion and Deposition

World Geography Unit 1: Land and Water Forms Wearing Down Landforms Wind and Waves.

Erosion and Deposition. Breaking Down Processes Weathering breaking down The breaking down of the earth’s material by natural processes. Erosion moved.

Erosion and Deposition. Breaking Down Processes Weathering The breaking down of the earth’s material by natural processes. Erosion The process by which.

Waves and Coasts waves Agents of erosion as get closer to shore: –wavelength decreases –velocity decreases –amplitude increases –in shallow water,

The Story Of Waves Waves Caused by: Wind Wind Earthquakes Earthquakes Gravitational force of the Moon and Sun. Gravitational force of the Moon and Sun.

Coastal Features Headlands and Bays A headland is an area of land which juts out to sea and is surrounded by sea on three sides. Headlands form in coastlines.

Shaping Earth’s Surface

Unit 1 Lesson 3 Erosion and Deposition by Water

Erosion by Wind and Waves

Changes to the Earth’s Surface: Erosion

What are sub-aerial processes and why are they important? What processes of erosion operate at the coast? What landforms are created by erosion? What.

Wave Action Section 1. What is a Wave? Wave is the movement of energy through a body of water Most waves form when winds blowing across the water’s surface.

Starter Complete the # 5-8 on page 4 of the sheet entitled, “Standardized Test Prep”. Answer all questions to the best of your ability. You may write on.

Erosion and Deposition

OCEAN MOTION Coulter. Most waves form when winds blowing across the water’s surface transmit their energy to the water. Wave-movement of energy through.

What forces shape a shoreline?

COASTAL EROSIONAL AND DEPOSIONAL FEATURES

Coasts. Wave erosion coasts formed by the force of waves as they strike the land the waves strike the land and pieces of rock are broken off the wave.

Coastal landforms LS: Explain the formation of erosional coastal landforms using vast key words. Describe the process of longshore drift and describe the.

5-3 Notes Waves and wind Erosion.

Changes to the Earth’s Surface: Erosion

Erosion and Deposition

Wave action and coastal landforms

CH 16 The Dynamic Ocean Ocean water is in constant motion and powered by many forces Forces include wind, Coriolis, gravity, density differences Ocean.

Chapter 16 – Wind, Waves, and Currents

Warm-up Week 4 The vertical distance between trough and crest is called the ____. a. wave height c. fetch b. wavelength d. wave period A fetch is _________.

Waves and the Shore.

Shoreline Processes and Features

16.3 – Shoreline Processes and Features

Erosion and Deposition from Water

Shoreline Features.

Warm-up Week 4 The vertical distance between trough and crest is called the ____. a. wave height c. fetch b. wavelength d. wave period A fetch is _________.

The Restless Ocean.

River Erosion Erosion shapes the land in different ways as the river moves from its source to its mouth: Near the source of a river, in the upper course,

“Shoreline Processes”

Erosion by Wind and Waves

Waves Section 9.5.

10.1 Shoreline Erosion and Deposition.

Chapter 12 Section 1 Shoreline Erosion and Deposition Bellringer

Place answers into appropriate areas.

Shoreline Processes and Features Outline

AGENT C- Coastal Processes (wave action or ocean motion)

Coastal Processes.

Presentation transcript:

Wind and Wave Erosion

How is wind abrasive? It carries sand grains that grind and scour anything that they hit.

What is Loess and how does it form? It can be 1m to 100m deep. Made of mineral & rock particles. It is wind-carried sediment & when dropped, it will hold together so well that when it erodes, it splits off vertically to form cliff-like slopes. Main deposits of loess in the U.S. include Mississippi & Missouri river valleys.

What is a sand dune? Sand dunes - hills of sand deposited by wind. They form when the sand piles up against shrubs, boulders, or other substances.

How does a Sand Dune Migrate? When wind blows against the windward side (side facing into the wind) of a dune, some of the surface sand is carried over top & falls on the leeward side (side facing against the wind)

Types of Sand dunes 1. Barchans – crescent-shaped & the ends of a barchan point downwind.

Types of Sand dunes 2. Transverse – Where sand is more abundant, long continuous sand ridges form at right angles to the wind. Found on beaches.

Types of Sand dunes 3. Parabolic – (u-shaped) dunes often form around blowouts. Unlike barchans, the open ends of parabolic dunes face upwind. Found on beaches.

Types of Sand dunes 4. Longitudinal – Form in desert regions with lots of sand. These dunes are long, straight ridges that are parallel to the general wind direction.

Draw a wave and label its parts (Crest, Trough, Height)

How do swash and backwash work together? Swash - the motion of water up the beach. Backwash – the motion of water running back down the beach

What is a longshore current? How does it affect someone swimming at the beach? It runs parallel to shore. It moves people down the beach.

What is a rip current? Why is it dangerous? Strong surface currents that flow away from the beach. They can reach up to 5 km/hr. & carry you away from shore.

Describe the process of a sea cliff turning into a sea stack. (4 parts) 1. Sea cliff - waves cut out rock & make a notch

2. Sea cave - notch will deepen & make a hole

3. Sea arch – waves cut through walls of sea caves to make an arch

4. Sea stacks – roof of sea arch falls into water

What is a sandbar? A sandbar is a bar of sand formed by ocean currents depositing sand near the shore underwater

What is a spit? A sandbar attached at one end to the shoreline.

What is a hook? A spit with a curved end

What is a barrier island? Barrier islands are sandbars not attached to land or the shoreline and are above water

What is a tombolo? A tombolo is a bar of sand that joins an island to the mainland.

What is a bay mouth bar? A bay mouth bar is a spit that completely closes access to a bay, thus sealing it off from the main body of water.