Landscapes Day 2 Agents of Erosion

 How does the bedrock beneath a mountain and plateau differ?  To the right, draw the drainage pattern for water going down a mountain  Name the five agents of erosion: Do Now

Aim, Learning Target & Agenda  AIM:  What causes the landscape to change over time?  Learning Target:  I can list the agents of erosion and explain how each type changes the landscape.  Agenda:  Do Now  Mini Lesson  Practice Problems

Mini Review  What’s makes a region a landscape? What has to be similar?

Mini Review  What’s makes a region a landscape? What has to be similar?  shape  climate  The way the underlying rocks are positioned

Mini Review  When we talk about shape we’re often talking about ELEVATION  How high something above sea level  What is the name of a landscape that has high elevation and high relief?  MOUNTAINS

How are Landscapes Changed?  Many landscapes are changed due to WEATHERING and EROSION  Weathering:  The change in rocks that occurs when they are exposed to conditions at Earth’s surface  Erosion:  Any process that moves sediments

Conditions of Weathering (Or Agents of Erosion)  Water (precipitation)  Rain  Snow  Ice freezing  Glaciers  Running water (streams, rivers, etc)  Wind  Ice  Waves

The topography of a region depends on...  the balance at any given time between forces that uplift the land and agents of erosion that wear down the land.

 Depending on the COMPOSITION of rocks, certain rocks RESIST erosion.

Water erodes the mountain V-shaped valley

Wind and Waves deposit sand on beach

Waves and high/low tide moves sand, etc onto the landmass

Water from highland source Rocks erode, water rushes downhill

Water erodes the rock starting to create a V – shaped valley