Change Over TimeLesson on Earths Landformsllhammon

The ForcesNatural Forces from inside the EarthProcess: Tectonic ActivityNatural Forces on the surface of the EarthProcess: WeatheringProcess: ErosionProcess: Wind (deposition)Process: Water (deposition)Process: Ice (and gravity)

Weathering is the chemical and physical processes that change the characteristics of rocks on the Earths 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.

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.

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

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.

Strait where 2 landmasses almost meet-tectonic activity (not Atlas!) Strait of GibraltarBetween the continents of Europe and AfricaPhoto - NASA

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

Volcano-Erosion wind Devils Tower, Wyoming - USANGS

Volcanic mountain tectonic activity Mt. Fuji Japan

Folded mountains tectonic activity Appalachians East coast United StatesNGS

Rift a section of the Earth that has opened tectonic activity Great Rift Valley Eastern coast of African continentNGS

Canyon a deep narrow depression in the Earths surface, aka, gorge-Erosion water Grand Canyon - USA

http://www.youtube.com/watch?v=VpEIUSWFdbYLava fall video 3 minutes

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

NGS

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

Sand Dunes- Erosion wind Sahara North AfricaNGS

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 minutesNASA

Glacier -body of ice that forms where the accumulation of snow exceeds its a(melting capacity) over many years ice/gravity-PatagoniaNASA

AndesFault-where 2 tectonic plates (tectonic activity) Andes Mountains South America NASA

Butte isolated hill with steep sides aka (mesa) Erosion wind -Monument Valley Utah, USANGS

Delta where a river empties into the ocean-Deposition water Mississippi River Delta Louisiana - USANASA

NASA

Delta - Deposition water Nile River Delta Egypt - AfricaNile RiverNASA

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

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

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 NASAhttp://www.youtube.com/watch?v=FGKUCPyzTYMAerial shot of the Blue hole in Belize, show only 2 minutes

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

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

Fjord - a long, narrow, deep inlet of the sea between high cliffs- Erosion - Glacial movement (ice)-Norway fjordsNGShttp://www.youtube.com/watch?v=AImP8CvPjd8Live fjord flyinghttp://www.youtube.com/watch?v=3Cs-zZ0Qu5Y

Fault-block Mountains Tectonic ActivitySierra Nevada - California

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

Bay a broad inlet of the sea where the land curves inwardChesapeake Bay East coast United StatesNASA

Glacier -Erosion ice Tierra del Fuego, ChileNGS

Glacial movement Ice - Great Lakes - USA NASA

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

Barrier Island -a long narrow sandy island (wider than a reef) running parallel to the shore Deposition water- South Padre Island NASA

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

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