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Download Earth`s Surface Features
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Constructive & Destructive Forces Shaping the Earth's Landscape Constructive & Destructive Forces Constructive Force *Forces that CREATE features on the Earth's surface Destructive Force *Force that CHANGES Earth's surface Constructive Forces Essential Questions • What are surface features? • What are examples of constructive forces? • How can a surface feature be changed by a constructive force? • What are surfaces features caused by constructive forces? Constructive Force • Deposition – • a process of dumping sediment, dirt, rocks, or particles in on place. Constructive Force Essential Questions • What are surface features? • Surface features are landforms and bodies of water that cover the Earth’s surface such as: • Mountains, valleys, canyons, gorges, beaches, sand dunes, barrier Islands, flood-plains, moraines, volcanoes, oceans, lakes, and rivers Constructive Force Essential Questions • What are examples of constructive forces? • • • • • Deposition Volcanic Activity Earthquake Activity Faulting Folding Constructive Force Essential Questions • How can a surface feature be changed by a constructive force? • By natural forces such as wind, water, ice, through the process of deposition. • The movement of the Earth’s crust • Plate Tectonics Constructive Force Essential Questions • What are surface features formed from constructive forces? • • • • Delta Floodplains Barrier island Sand dune • • • • Moraine Islands Mountain Ranges Cliffs Destructive Forces Essential Questions • What are examples of destructive forces? • How are surface features changed by destructive forces? • What are examples of surface features caused by destructive forces? Destructive Force Essential Questions • What are examples of destructive forces? • Weathering • Mechanical / Physical • Chemical • Erosion • Volcanic Activity • Earthquake Acuity Destructive Force Essential Questions • How are surface features changed by destructive forces? • • • • • • • • • • Freezing and thawing of the earth’s crust Freezing water in cracks of rock Oxidation / rusting Carbonic acid / acid rain Impact of organisms Water / rivers and oceans Ice / glaciers Wind Gravity Movement of earth’s plates / plate tectonics Destructive Force Essential Questions • What are examples of surface features caused by destructive forces? • • • • • • • • • Caverns / Carbonic Acid V-shaped valleys / River water Canyon / gorges / River water Sea arches / Ocean Waves Sea stacks / Ocean Waves Buttes / Wind Desert pavements / Wind Reshaped mountains / Volcanoes Trenches / Earthquakes
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