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Unit 4: Agents of Erosion

Unit 4: Agents of Erosion. Unit Big Idea/Essential Questions. Oceans play a large role in shaping the earth’s surface. Essential Questions How does wave erosion alter the shape of the coastlines? What adaptations are seen in marine life found in various marine environments?

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Unit 4: Agents of Erosion

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  1. Unit 4: Agents of Erosion

  2. Unit Big Idea/Essential Questions • Oceans play a large role in shaping the earth’s surface. • Essential Questions • How does wave erosion alter the shape of the coastlines? • What adaptations are seen in marine life found in various marine environments? • How has humans altered the shape of the coastlines? • What challenges are encountered when harvesting resources from the seafloor? ES Standards: 1.3, 1.5, 1.7, 1.8, 3.2, 3.3, 3.4, 3.5,3.8, 3.9, 4.2 Bio Standards: 6.3, 6.4

  3. Key Vocabulary • Abyssal Plain • Biogenous, hydrogenous, terrigenous sediments • Continental margin, rise, slope, shelf • Rift valley, seamount, trench, guyot • Turbidity current • Salinity • Pycnocline, thermocline • Trophic level, food chain/web • Benthos, Nekton, Plankton • Abyssal, Benthic, Oceanic, Pelagic, Neritic Zones • Photic, Aphotic, Euphotic Zones • Beach nourishment • Coastline, shoreline • Coriolis effect • Estuary • Hard stabilization • Longshore current, rip current, tidal current • Upwelling • Wave period, wavelength • Neap and Spring tides

  4. Question of the Day • What are the 3 types of plate boundaries found on the Earth?

  5. Geology Review • Oceanic and Continental Crust • Plate Tectonics • Plate Boundaries

  6. Mapping the Ocean Floor • Technology • HMS Challenger and Bathymetry • SONAR • Side Scan and Multibeam • Satellites

  7. Mapping the Ocean Floor • Features • Continental Margins • Deep-Ocean Basins • Mid-Ocean Ridges

  8. Mapping the Ocean Floor • Sediments • Biogenous • Hydrogenous • Terrigenous • Resources

  9. Ocean Water • Salinity • What do you think is the primary source of dissolved substances seen in the ocean? • Is there a higher salinity at the poles or equator? • Temperature Variation • Main cause of temperature variation in the ocean? • Density Variation • What factors would influence density of seawater?

  10. Ocean Water • Ocean Acidification • CO2 + H2O  H2CO3HCO2- + H+ or CO32- + 2H+

  11. Marine Life • Classification of Organisms • Plankton • Nekton • Benthos

  12. Marine Life • Life Zones • Light, Distance, Depth • Productivity • Feeding Relationships • Food Chains/Food Webs • Trophic Levels

  13. Circulation • Currents • Deep water • Surface water • Upwelling

  14. Shoreline • Features • Coastline classification

  15. Waves • Characteristics • Transport of material

  16. Wave • Erosional Features • Stabilization

  17. Tides • Types of tides • Neap & Spring Tides

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