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Change Over Time

Change Over Time. Lesson on Earth’s Landforms. llhammon. The Forces. Natural Forces from inside the Earth Process: Tectonic Activity. Natural Forces on the surface of the Earth. Process: Weathering. Process: Erosion. Process: Ice (and gravity). Process: Wind (deposition).

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Change Over Time

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  1. Change Over Time Lesson on Earth’s Landforms llhammon

  2. The Forces Natural Forces from inside the Earth Process: Tectonic Activity Natural Forces on the surface of the Earth Process: Weathering Process: Erosion Process: Ice (and gravity) Process: Wind (deposition) Process: Water (deposition)

  3. Weatheringis the chemical and physical processes that change the characteristics of rocks on the Earth’s surface. It is also known (AKA) as the preparation for erosion. In order for weathering to occur, the environment of a rock sample must change and the rock needs to be exposed to some form of water and the air. Human processes such as pollution, which can be a large factor in acid rain, along with the acts of other living organisms, can cause chemical weathering to occur at faster rates.

  4. Weathering - the various mechanical and chemical processes that cause exposed rock to decompose; or the erosion or breakdown of rock into smaller fragments by natural physical agents with no chemicals involved; also called Desintigration.

  5. Soil Horizons It is C horizon (parent material and rock) where the weathering can occur. USGS

  6. In your geographic dictionary write the definition and sketch for each landform. For the sentence section use the example provided. The definition is in BLACK. The cause is in RED. The example is in YELLOW.

  7. Strait – where 2 landmasses almost meet- tectonic activity (not Atlas!) Strait of Gibraltar Between the continents of Europe and Africa Photo - NASA

  8. Peninsula - a landmass surrounded by water on 3 sides– Florida at night - USA Photo - NASA

  9. NGS Volcano-Erosion – wind– Devil’s Tower, Wyoming - USA

  10. Volcanic mountain – tectonic activity –Mt. Fuji – Japan

  11. Folded mountains – tectonic activity – Appalachians – East coast United States NGS

  12. Rift –a section of the Earth that has opened– tectonic activity – Great Rift Valley – Eastern coast of African continent NGS

  13. Canyon – a deep narrow depression in the Earth’s surface, aka, gorge-Erosion – water – Grand Canyon - USA http://www.youtube.com/watch?v=VpEIUSWFdbY Lava fall video 3 minutes

  14. NGS Dome mountain - wind /originally tectonic activity – Uluru (Ayers Rock) Outback of Australia http://www.youtube.com/watch?v=h7wdeJ7m1rM

  15. Dome Mountain (tectonic activity) – Enchanted Rock – near Fredericksburg, Texas

  16. Sand Dunes- Erosion – wind – – Sahara – North Africa NGS

  17. Island a landmass surrounded by water on all sides– Volcanic –Tectonic Activity – Large Island of Hawaii – KONA USA http://www.youtube.com/watch?v=6J6X9PsAR5w Kilauea eruption 3 minutes NASA

  18. Glacier -body of ice that forms where the accumulation of snow exceeds its a(melting capacity) over many years– ice/gravity-Patagonia • NASA

  19. Fault-where 2 tectonic plates (tectonic activity) Andes Mountains South America Andes NASA

  20. Butte –isolated hill with steep sides aka (mesa) Erosion – wind - Monument Valley – Utah, USA NGS

  21. Delta – where a river empties into theocean-Deposition – water – Mississippi River Delta – Louisiana - USA NASA

  22. NASA

  23. Nile River Delta- Deposition – water – Nile River Delta – Egypt - Africa NASA

  24. River- a natural water source that flows towards the ocean - Water – Amazon River, Brazil – South America NASA

  25. Gulf -a deep inlet of the sea almost surrounded by land, with a narrow mouth.– Gulf of Mexico – Western Hemisphere Rand McNally

  26. Atoll –A ring-shaped reef, island, or chain of islands formed of coral-originally tectonic –volcanic island that sinks. • Atafu Atoll-Tokelau Islands S. Pacific NASA http://www.youtube.com/watch?v=FGKUCPyzTYM Aerial shot of the Blue hole in Belize, show only 2 minutes

  27. Isthmus -a narrow strip of land with sea on either side, forming a link between two larger areas of land – Gulf of Tehuantepec - Mexico NASA

  28. Peninsula -piece of land almost surrounded by water or projecting out into a body of water.– Iberian - Europe NASA

  29. Fjord - a long, narrow, deep inlet of the sea between high cliffs- Erosion - Glacial movement (ice)-Norway fjords http://www.youtube.com/watch?v=3Cs-zZ0Qu5Y NGS http://www.youtube.com/watch?v=AImP8CvPjd8 Live fjord flying

  30. Fault-block Mountains – Tectonic Activity Sierra Nevada - California

  31. (V shaped valley ) Erosion –water- Formed by river Cirque, Oregon

  32. Bay –a broad inlet of the sea where the land curves inward Chesapeake Bay – East coast United States NASA

  33. Glacier -Erosion – ice Tierra del Fuego, Chile NGS

  34. NASA Glacial movement – Ice -Great Lakes - USA

  35. Plateau-An area of fairly level high ground-Erosion (wind) - Colorado Plateau - USA

  36. Barrier Island -a long narrow sandy island (wider than a reef) running parallel to the shoreDeposition – water- South Padre Island NASA

  37. U-shaped valley- carved by a glacial erosion, Little Cottonwood Canyon, Wasatch Mountains, Utah.

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