Unit 4: Agents of Erosion

Unit 4: Agents of ErosionUnit Big Idea/Essential QuestionsOceans play a large role in shaping the earths surface.Essential QuestionsHow 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, 4.2Bio Standards: 6.3, 6.4Key VocabularyAbyssal PlainBiogenous, hydrogenous, terrigenous sedimentsContinental margin, rise, slope, shelfRift valley, seamount, trench, guyotTurbidity currentSalinityPycnocline, thermoclineTrophic level, food chain/webBenthos, Nekton, Plankton

Abyssal, Benthic, Oceanic, Pelagic, Neritic ZonesPhotic, Aphotic, Euphotic ZonesBeach nourishmentCoastline, shorelineCoriolis effectEstuaryHard stabilizationLongshore current, rip current, tidal currentUpwellingWave period, wavelengthNeap and Spring tides3Question of the DayWhat are the 3 types of plate boundaries found on the Earth?Geology ReviewOceanic and Continental CrustPlate TectonicsPlate Boundaries

Mapping the Ocean FloorTechnologyHMS Challenger and BathymetrySONARSide Scan and MultibeamSatellitesMapping the Ocean FloorFeaturesContinental MarginsDeep-Ocean BasinsMid-Ocean Ridges

Mapping the Ocean FloorSedimentsBiogenousHydrogenousTerrigenousResources

Ocean WaterSalinityWhat 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 VariationMain cause of temperature variation in the ocean?Density VariationWhat factors would influence density of seawater?

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Ocean WaterOcean AcidificationCO2 + H2O H2CO3 HCO2- + H+ or CO32- + 2H+

Marine LifeClassification of OrganismsPlanktonNektonBenthos

Marine LifeLife ZonesLight, Distance, DepthProductivityFeeding RelationshipsFood Chains/Food WebsTrophic Levels

CirculationCurrentsDeep waterSurface waterUpwelling24

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ShorelineFeaturesCoastline classification

WavesCharacteristicsTransport of material30

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WaveErosional FeaturesStabilization

TidesTypes of tidesNeap & Spring Tides39

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