Weathering and Erosion

 Science

 2 views
of 32
All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
Description
1. Science 5 Facilitator: Mr. Roland C. Dalloran Jr. December 8-11, 2014 2. Weathering and Erosion 3. Weathering ã The breakdown do the materials of Earth’s crust…
Share
Transcript
  • 1. Science 5 Facilitator: Mr. Roland C. Dalloran Jr. December 8-11, 2014
  • 2. Weathering and Erosion
  • 3. Weathering • The breakdown do the materials of Earth’s crust into smaller pieces.
  • 4. Physical Weathering • Process by which rocks are broken down into smaller pieces by external conditions. • Types of Physical weathering – Frost heaving and Frost wedging – Plant roots – Friction and impact – Burrowing of animals – Temperature changes
  • 5. Frost Wedging
  • 6. Frost Heaving
  • 7. Plant Roots
  • 8. Friction and Repeated Impact
  • 9. Burrowing of Animals
  • 10. Temperature Changes
  • 11. Chemical Weathering • The process that breaks down rock through chemical changes. • The agents of chemical weathering – Water – Oxygen – Carbon dioxide – Living organisms – Acid rain
  • 12. Water • Water weathers rock by dissolving it
  • 13. Oxygen • Iron combines with oxygen in the presence of water in a process called • The product of oxidation is oxidation
  • 14. Carbon Dioxide • CO2 dissolves in rain water and creates carbonic acid • Carbonic acid easily weathers limestone and marble
  • 15. Living Organisms • Lichens that grow on rocks produce weak acids that chemically weather rock
  • 16. Acid Rain • Compounds from burning coal, oil and gas react chemically with water forming acids. • Acid rain causes very rapid chemical weathering
  • 17. Karst Topography • A type of landscape in rainy regions where there is limestone near the surface, characterized by caves, sinkholes, and disappearing streams. • Created by chemical weathering of limestone
  • 18. Features of Karst: Sinkholes
  • 19. Features of Karst: Caves
  • 20. Features of Karst: Disappearing Streams
  • 21. •
  • 22. End of lesson for today
  • 23. Learning Targets I can: -define erosion. -enumerate the different agents of erosion. -discuss how erosion happens. -differentiate erosion from weathering
  • 24. Erosion • The process by which water, ice, wind or gravity moves fragments of rock and soil.
  • 25. Water Erosion • Rivers, streams, and runoff
  • 26. Ice Erosion • Glaciers
  • 27. Wind Erosion Desert
  • 28. Ilocos Sandunes
  • 29. Mass Movements • Landslides, mudslides, slump and creep landslide clip.mpeg
  • 30. Other agents of erosion Animals:
  • 31. Others agents of erosion Humans:
  • Related Search
    We Need Your Support
    Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

    Thanks to everyone for your continued support.

    No, Thanks