Greatest Discoveries/Bill Nye/Earth Science 19:48 min


Faces of Earth: Shaping the Planet 45 min



Weathering and Erosion Crash Course 4:05


Weathering & Erosion

Discovery Learning videos: vickilowery pw:gogreen

Basics of Geology: Erosion and Weathering grades 6-8 20 min
Paul the Penguin:Weathering & Erosion grades K-2;3-5 21 min

Weathering_and_erosion_pres.ppt

Weathering
The process that breaks down rock and other substances on the Earth's surface. Heat, cold, water, ice, oxygen, and carbon dioxide all contribute to weathering.

Mechanical weathering - when rock is physically broken down into smaller rocks. Causes include: freezing & thawing, release of pressure, plant growth, action of animals, and abrasion.

Chemical weathering - the breakdown of rock through chemical changes. Causes include: the action of water, oxygen, carbon dioxide, living organisms & acid rain.

Rate of weathering - Two most important factors include type of rock & climate

Erosion
The removal of rack particles by wind, water, ice, or gravity.


Surface Features using maps


Topography - the shape of the land including the area's elevation, relief, and landforms
Elevation - the height above sea level on the Earth's surface
Relief - the difference in elevation between the highest and lowest parts of an area
Landforms - a feature of topography, such as a hill or valley, formed by the processes that shape the Earth's surface.

Three main types of landforms

Plains - nearly flat (low elevation) of gently rolling land with low relief
Mountains - landforms with high elevation and high relief
Plateaus - landforms with high elevation and a more or less level surface (low relief)

Topographic Maps
15:01



How are landforms represented on flat maps?

How to read Contour Maps

Matching Contour maps

Mapping Topics

How to read Topographic Maps

Topozone - How to Read a Topographic Map

Contour Line Basics

Earth's Foldable Landform Flip Book