3.  Mechanical  Chemical  Biological  Rocks eventually form sediment  Rocks - stationary

4. DefinitionMechanisms  Produces finer particles by fracturing rock  Mineral composition remains the same  Abrasion (grinding)  Crystallization (frost shattering)  Thermal fracturing (rapid heat change)  Hydration (Expansion of water)  Exfoliation (pressure release jointing)

6. DefinitionProcesses  Chemical reactions transform rocks and minerals into new chemical combinations that are stable under prevailing conditions at or near the Earth's surface.  Rock disintegrates  Hydrolysis & Hydration (involve water)  Oxidation & Reduction (combines with O or loss of O)  Solution/Dissolution (carbonates & carbon dioxides combine with form carbonic acid) ◦ CO 2 + H 2 O = H 2 CO 3

7. Chemical weathering  Not all minerals are prone to chemical weathering  Faster in warmer climates  Heat  Water

8. DefinitionPhoto Examples  Biological weathering can be considered special types of mechanical or chemical weathering  Action of living organism  Plants & Animals  Bacteria, algae and lichens  Secrete acids, chemicals

9. DefinitionAgents Removal and movement of earth materials by natural agents. Some of these agents include glaciers, wind, water, earthquakes, volcanoes, tornadoes, hurricanes, mud flows, and avalanches.  Water  Wind  Glaciers

10. http://www.bbc.co.uk/learningzone/clips/3079.bb.rm Chandeleur Islands

11.  Weathering  2 processes  No movement  Mass Wasting  Movement of rock particle – gravity  Erosion  Flowing Agent

12.  Splash erosion  Sheet erosion  Fluvial erosion  Waves  Glacial erosion  Abrasion  Plucking

13. Waves in oceans and other large bodies of water cause coastal erosion. The power of ocean waves is awesome; large storm waves can produce 2000 pounds of pressure per square foot. The pure energy of waves along with the chemical content of the water is what erodes the rock of the coastline. Aeolian Erosion

14. Wave action in Calvert County Maryland

15.  Aeolian Erosion – Wind erosion, sand dunes

16.  Effects of mechanical weathering  http://www.classzone.com/books/earth_science/terc/content/visualizations/es1201/es1201page01.cfm?chapter_no=visualization http://www.classzone.com/books/earth_science/terc/content/visualizations/es1201/es1201page01.cfm?chapter_no=visualization  Effects of chemical weathering  http://www.classzone.com/books/earth_science/terc/content/visualizations/es1202/es1202page01.cfm?chapter_no=visualization http://www.classzone.com/books/earth_science/terc/content/visualizations/es1202/es1202page01.cfm?chapter_no=visualization  Landscape formed by erosion  http://www.classzone.com/books/earth_science/terc/content/visualizations/es1205/es1205page01.cfm?chapter_no=visualization http://www.classzone.com/books/earth_science/terc/content/visualizations/es1205/es1205page01.cfm?chapter_no=visualization  Sediment transfer – flowing water  http://www.classzone.com/books/earth_science/terc/content/visualizations/es1303/es1303page01.cfm?chapter_no=visualization http://www.classzone.com/books/earth_science/terc/content/visualizations/es1303/es1303page01.cfm?chapter_no=visualization  Channels in meandering river  http://www.classzone.com/books/earth_science/terc/content/visualizations/es1306/es1306page01.cfm?chapter_no=visualization http://www.classzone.com/books/earth_science/terc/content/visualizations/es1306/es1306page01.cfm?chapter_no=visualization  Waterfalls and chasms  http://www.classzone.com/books/earth_science/terc/content/visualizations/es1305/es1305page01.cfm?ch apter_no=visualization http://www.classzone.com/books/earth_science/terc/content/visualizations/es1305/es1305page01.cfm?ch apter_no=visualization  Glacial erosion of bedrock  http://www.classzone.com/books/earth_science/terc/content/visualizations/es1502/es1502page01.cfm?chapter_no=visualization http://www.classzone.com/books/earth_science/terc/content/visualizations/es1502/es1502page01.cfm?chapter_no=visualization  Example of wave erosion ◦ http://www.classzone.com/books/earth_science/terc/content/visualizations/es1606/es1606page01.cfm?chapter_no=visualization http://www.classzone.com/books/earth_science/terc/content/visualizations/es1606/es1606page01.cfm?chapter_no=visualization