Intro

Intro

Objective 12/06/11Explain how landforms are created through erosional processes

How is erosion different from weathering?

EROSIONAL LANDFORMS

Erosional Landforms Erosion A gravity driven

process that moves solids (sediment, soil, rock and other particles) from their source and deposits them elsewhere.

Erosional Landforms What causes

erosion? Mostly water and

wind Rain, snow, sleet Ice, glaciers Rivers, streams Ocean waves

Erosional Landforms Rain, snow, sleet

(weather) Dissolves rock,

freezes and expands rock, or washes rock away

Erosional Landforms Ice, glaciers Sediment picked

up into the glacier and carried

Erosional Landforms Rivers & Streams Cut through the

landscape, move rock from one place to another

Erosional Landforms Ocean Waves Erode the

shorelines of the land with power and force

Erosional Landforms Shoreline

Erosional Landforms

Headlands Sea Cave Sea Arches Sea Stacks Wave Cut

Terrence Beaches

Headlands

Sea Caves

Sea Arches

Sea-Stacks

Wave-cut Terraces

Beaches

Erosional Landforms What happens to

eroded rock? Rock that is

eroded is carried towards the ocean as sediment Becomes sand Becomes deltas Becomes sea-bed

Erosional Landforms Ways to stop sand

movement: Groins Jetties Breakwaters

Erosional Landforms (Groins)

Erosional Landforms (Jetties)

Erosional Landforms (Breakwaters)

Erosional Landforms Summary:

What is erosion? What causes erosion? What are some shoreline erosional

landforms? What are some ways to stop our shorelines

from eroding away?

Objective 12/06/09

Outro

Explain how landforms are created through erosional processes.

Using a Flow-Map, show how headlands can eventually become beaches.