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WEATHERING, SOIL, AND MASS WASTING 
DIFFERENCIATING EXTERNAL PROCESSES & INTERNAL PROCESSES External process- processes that occur at or near Earth’s surface and powered by the energy from the Sun Internal Process- processes that occur underneath the Earth’s surface and derives its energy from Earth’s interior
THREE EARTH’SEXTERNAL PROCESSES Weathering Mass Wasting Erosion
WEATHERING ,[object Object]
part of the rock cycle
considered as a preparation for erosion
rocks are damaged physically and/or chemically,[object Object]
AGENTS OF WEATHERING: change of the environment Water air/wind human activities chemical substances
KINDS OF WEATHERING Mechanical Weathering Chemical Weathering
MECHANICAL WEATHERING ,[object Object]
increases the amt. of surface available for chemical weathering
results in smaller pieces from a single large one,[object Object]
d. Biological Activities- caused by an organism’s activity such as plants, burrowing animals & humans
FROST WEDGING ABRASION EXFOLIATION
CHEMICAL WEATHERING - rock is broken down by chemical action resulting in the change of the composition of the rock AGENTS:  Oxygen		3. carbon dioxide Rainwater 		4. acids produced by 				decaying organisms
2 PROCESSES OF CHEMICAL WEATHERING Oxidation- mineral is interacted chemically by oxygen Hydration- mineral is interacted chemically by water Carbonation- mineral is interacted chemically by carbon dioxide or carbonic acid
BAUXITE- COMBINATION OF OXYGEN, HYDROGEN & ALUMINUM HEMATITE  FORMED BY OXIDATION
EROSION ,[object Object]
transporting of the rock from one place to anotherAGENTS: Wind Water Ice
SHEET AND WIND EROSION Sheet erosion- soil is removed by thin sheets of water Wind erosion- caused by wind and only very significant during windy days or during a drought
RILLS AND GULLIES Rills- narrow incision of soil caused by overland flow Gully- landform created by running water which sharply eroded the land, typically on a hillside
G U L L Y R I L L S
MASS WASTING ,[object Object]
The step that follows weathering,[object Object]
MOTION TYPES OF MASS WASTING 1. fall- slopes which are too steep (ex. Rockfall) 2. Slides- materials remain fairly & coherent & moves along a well defined surface (ex. Landslide) 3. Flow- moves downslope as a vicious FLUID (ex. Mudflow) 4. Slump- downward sliding of a mass

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Weathering, Erosion, Mass Wasting.

  • 1. WEATHERING, SOIL, AND MASS WASTING 
  • 2. DIFFERENCIATING EXTERNAL PROCESSES & INTERNAL PROCESSES External process- processes that occur at or near Earth’s surface and powered by the energy from the Sun Internal Process- processes that occur underneath the Earth’s surface and derives its energy from Earth’s interior
  • 3. THREE EARTH’SEXTERNAL PROCESSES Weathering Mass Wasting Erosion
  • 4.
  • 5. part of the rock cycle
  • 6. considered as a preparation for erosion
  • 7.
  • 8. AGENTS OF WEATHERING: change of the environment Water air/wind human activities chemical substances
  • 9. KINDS OF WEATHERING Mechanical Weathering Chemical Weathering
  • 10.
  • 11. increases the amt. of surface available for chemical weathering
  • 12.
  • 13. d. Biological Activities- caused by an organism’s activity such as plants, burrowing animals & humans
  • 14. FROST WEDGING ABRASION EXFOLIATION
  • 15. CHEMICAL WEATHERING - rock is broken down by chemical action resulting in the change of the composition of the rock AGENTS: Oxygen 3. carbon dioxide Rainwater 4. acids produced by decaying organisms
  • 16. 2 PROCESSES OF CHEMICAL WEATHERING Oxidation- mineral is interacted chemically by oxygen Hydration- mineral is interacted chemically by water Carbonation- mineral is interacted chemically by carbon dioxide or carbonic acid
  • 17. BAUXITE- COMBINATION OF OXYGEN, HYDROGEN & ALUMINUM HEMATITE FORMED BY OXIDATION
  • 18.
  • 19. transporting of the rock from one place to anotherAGENTS: Wind Water Ice
  • 20. SHEET AND WIND EROSION Sheet erosion- soil is removed by thin sheets of water Wind erosion- caused by wind and only very significant during windy days or during a drought
  • 21.
  • 22. RILLS AND GULLIES Rills- narrow incision of soil caused by overland flow Gully- landform created by running water which sharply eroded the land, typically on a hillside
  • 23. G U L L Y R I L L S
  • 24.
  • 25.
  • 26. MOTION TYPES OF MASS WASTING 1. fall- slopes which are too steep (ex. Rockfall) 2. Slides- materials remain fairly & coherent & moves along a well defined surface (ex. Landslide) 3. Flow- moves downslope as a vicious FLUID (ex. Mudflow) 4. Slump- downward sliding of a mass
  • 27. A V A L A N C H E R O C K F A L L L A N D S L I D E
  • 29. BIBLOIGRAPHY: Tarbuck, Edward and Lutgens, Frederick. Earth Science: Basic Principles and Concepts, Pearson Education South Asia Pte Ltd. 23-25 First Lok Yang Road, Jurong Singapore http://www.regentsprep.org http://www.google.com http://images.google.com.ph/imghp?hl=en&tab=wi
  • 30. THANKS FOR WATCHING! By: Russel Christine Corcino MSU-IIT IDS