IntroIntro 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 OutroOutro Explain how landforms are created through erosional processes. Using a Flow-Map, show how headlands can eventually become beaches.