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Download 5 Themes & 6 Essential Elements of Geography
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Landforms, Water, and Natural Resources Chapter 4 Landforms Section 1 Forces Below Earth’s Surface • Earth’s Composition –Core –Mantle –Crust • Internal Forces –Plate Tectonics Theory • Continental Drift Earth’s Layers Plate Tectonics Theory of Continental Drift Forces Below Earth’s Surface • Plate Movement – Divergent (spreading) • Oceanic ridges • Rift valleys – Convergent (collide) • Subduction zone – Oceanic trench – Volcanoes • Mountains Plate Movement Seafloor Spreading Seafloor Spreading Plate Movement Subduction Zone Volcanoes Forces Below Earth’s Surface • Lateral – Faults • San Andreas Fault (U.S. West Coast) Plate Movement Faults Faults Folds Folds Ring of Fire Plate Movement Forces on Earth’s Surface • Weathering – Chemical – Physical • Erosion – Water – Wind – Glaciation Mechanical Weathering Mechanical Weathering Mechanical Weathering Chemical Weathering Chemical Weathering Chemical Weathering Water Erosion Water Erosion Beach Erosion from Waves Wind Erosion Glacial Erosion Glacial Striation Moraines Glacial Valley Landforms • Tectonic Processes – Mountains, some valleys, folding, faulting • Erosion – Plateaus, plains • Sediment Deposition – Alluvial fans, river deltas Landforms Landforms Landforms The Hydrosphere Section 2 Water on Earth • Breakdown – Salt water – 97% – Freshwater – <3% • Available to Humans - <1% Hydrologic Cycle Water on Earth Flooding Natural Resources Section 3 Soil Forests Air Air Air Water Water Minerals Minerals Energy Energy
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