There are two main types of surface changes: slow changes like weathering and erosion, and fast changes such as volcanic eruptions, earthquakes, landslides, and tsunamis. Weathering occurs through physical, chemical, and biological processes that break down rock and soil. Erosion then transports this weathered material from its origin location. Fast surface changes like volcanic eruptions and earthquakes can also trigger other events such as landslides or tsunamis.

1. Surface Changes Howard Ignatius, “Delicate Arch, Arches National Park” May 1, 2009 via Flickr, Creative Commons attribution

4. Earthquakes

5. Landslides

7. Chemical Weathering Solution Minerals dissolved into water Karst Topography Groundwater dissolving sedimentary rock (sinkholes, caves, springs) Steve Barringer, “ Child Angel III-niño angel” March 24, 2009 via Flickr, Creative Commons NoDervs License Andrew Stawerz, “Cheddar Caves-Mirror Pool” June 11, 2006 via Flickr, Creative Commons Attribution

8. Oxidation oxygen combined with iron-bearing minerals “rusting” Andrea Schaffer, “Rust” March 10, 2007 via Flickr, creative commons Attribution

10. Lichens, fungi, and other micro-organisms

11. Animals (including humans)Waka Jawaka, ”Roots" August 23,2007 via Flickr, Creative Commons Attribution Mike McCaffrey, “DSC N9622 Photographic Fungus” August 15, 2007 via Flickr, Creative Commons Attribution

17. Causes the Earth to shakeClipart from PowerPoint

18. Landslides Downward movement of materials (rock and soil) Topple: Large parts of rock break off Slide: large connected mass “slides” down a slope Barry Maynard,”Topple” December 2, 2008 via Flickr, Creative Commons Attribution Barry Maynard, “Slide” November 26, 2008 via Flickr, Creative Commons Attribution

21. Can be caused by:

22. Earthquakes

23. VolcanoesClipart from PowerPoint

24. Write Most interesting fact. Something you’re curious about. Favorite form of surface change.

26. Many forms of natural changes.

27. Humans contribute too! -How do you think we’re involved? Clipart from PowerPoint

28. Citation Gore, Pamela J.W. "Weathering." Georgia Perimeter College. Georgia Perimeter College, 5 Feb. 2002. Web. 5 Oct. 2009. <http://facstaff.gpc.edu/~pgore/ geology/geo101/weather.htm>. Impacts and Effects of Volcanoes. N.p., n.d. Web. 5 Oct. 2009. <http://library.thinkquest.org/17457/volcanoes/effects.php>. "Landslide Hazard Information-Causes, Pictures, Definition." Geology.com. N.p., n.d. Web. 5 Oct. 2009. <http://geology.com/usgs/landslides/#>. "Tsunamis and Earthquakes Life of a Tsunami." USGS Science for a changing world. USGS, 22 Oct. 2008. Web. 5 Oct. 2009. <http://walrus.wr.usgs.gov/tsunami/ basics.html>. Wald, Lisa. "The Science of Earthquakes." USGS. N.p., 25 June 2009. Web. 5 Oct. 2009. <http://earthquake.usgs.gov/learning/kids/eqscience.php>.