Post on 24-Dec-2015
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Physical ProcessesPhysical Processes
• Natural events that Natural events that affect the affect the environments of environments of regions.regions.
EarthEarth
• Earth is made up of 4 Earth is made up of 4 spheres:spheres:
• LithosphereLithosphere• AtmosphereAtmosphere• HydrosphereHydrosphere• BiosphereBiosphere
LithosphereLithosphere
• Crust and Upper Crust and Upper MantleMantle
• Solid rock portion of Solid rock portion of EarthEarth
AtmosphereAtmosphere
• The layer of gases The layer of gases surrounding Earthsurrounding Earth
• Oxygen we breatheOxygen we breathe
• protects the Earthprotects the Earth
• medium for weather medium for weather and climateand climate
HydrosphereHydrosphere
• Water elements of Water elements of EarthEarth
• Ocean, seas, rivers, Ocean, seas, rivers, lakes, and water in lakes, and water in the atmospherethe atmosphere
BiosphereBiosphere
• Part of Earth where Part of Earth where plants and animals plants and animals livelive
• Made up of Made up of Lithosphere, Lithosphere, Atmosphere, and Atmosphere, and HydrosphereHydrosphere
Physical ProcessesPhysical Processes
• Impact these spheres, Impact these spheres, but more importantly, but more importantly, they impact they impact usus..
WeatheringWeathering
• Mechanical weathering:Mechanical weathering:
• Processes that break Processes that break rock into smaller pieces rock into smaller pieces without changing the without changing the composition of the rockcomposition of the rock
• Ex. Ice, plant roots, Ex. Ice, plant roots, human activitieshuman activities
• More common in dry More common in dry areasareas
WeatheringWeathering
• Chemical weathering:Chemical weathering:
• Process when the rock is Process when the rock is changed into a new changed into a new substance substance
• Decomposes as a result Decomposes as a result of interaction between air of interaction between air or water and the rockor water and the rock
• More common in warm, More common in warm, moist climatesmoist climates
ErosionErosion
• Water erosionWater erosion
• The movement of The movement of weathered material by weathered material by waterwater
• Reshapes landforms Reshapes landforms by depositing or by depositing or removing sedimentremoving sediment
ErosionErosion
• Wind erosionWind erosion
• The movement of The movement of weathered material by weathered material by windwind
• Reshapes landforms Reshapes landforms by depositing or by depositing or removing sedimentremoving sediment
ErosionErosion• Glaciation Glaciation
• The movement of weathered The movement of weathered material by glaciermaterial by glacier
• Reshapes landforms by Reshapes landforms by depositing or removing depositing or removing sedimentsediment
• Carves the land dramaticallyCarves the land dramatically
Tectonic ForcesTectonic Forces
• Internal forces that Internal forces that shape Earth’s surface shape Earth’s surface and begin beneath and begin beneath the lithospherethe lithosphere
• VolcanoesVolcanoes
Tectonic ForcesTectonic Forces
• Internal forces that Internal forces that shape Earth’s surface shape Earth’s surface and begin beneath and begin beneath the lithospherethe lithosphere
• EarthquakesEarthquakes
• Mostly along Mostly along boundaries (fault boundaries (fault lines)lines)
Tectonic ForcesTectonic Forces
• Internal forces that Internal forces that shape Earth’s surface shape Earth’s surface and begin beneath and begin beneath the lithospherethe lithosphere
• TsunamiTsunami
• Result of earthquakes Result of earthquakes and landslidesand landslides
Soil-buildingSoil-building
• Processes that determine the Processes that determine the soil-composition of a regionsoil-composition of a region
• Determines agricultureDetermines agriculture
Soil-buildingSoil-building
• DesertificationDesertification
• an expansion of dry an expansion of dry conditions to moist conditions to moist areas that are next to areas that are next to desertsdeserts
• Dry soil = poor Dry soil = poor agricultureagriculture
Climate and WeatherClimate and Weather
• Determines Determines agriculture, carrying agriculture, carrying capacity, and life of capacity, and life of regionsregions
• Extreme climatesExtreme climates