Intro

Objective 12/06/11

Explain 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.