GEOG1710 1st Edition Exam 1 Study Guide Lectures 1 4 Lecture 1 January 16 Characteristics of Geography Location and Place Matter Longitude is East and West of the Prime meridian Sensors Satellites are one way of remote sensing Sensor types Geographic Information System NOT GPS Projections Character of Earth Systems I Systems can be open or close II Can see if gaining or loosing a balanced concept III All systems use energy to perform work IV Systems can change themselves a A feedback V Composed of smaller systems hierarchical Lithosphere Hydrosphere Biosphere and Atmosphere Lecture 2 January 21 Planetesimal Hypothesis also called dust cloud or hebula hypothesis The sun is the engine that powers the Earth systems The atmosphere protects us from harmful high radiation Incoming energy from sun the sun is mostly shortwave radiation Earth absorbs radiation and sends it back as long wave radiation Atmosphere traps a lot of radiation on its way out to space Greenhouse Effect atmospheric gases allow shortwave radiation to pass through atmospheric gases allow shortwave radiation to pass through atmospheric but then absorb long wave radiation as it travels back from Earth to space The Greenhouse Effect keeps the Earth at temperature at which people can survive Earth s relation to the sun changes Eccentricity Obliquity Atmosphere Thin layer of gases that surround the Earth Air atmospheric pressure weigh on us the further from Earth the less molecules that are pulled down by gravity weight of the air above you As you increase in altitude the air pressure goes down Atmospheric Profile Three ways to divide up the atmosphere 1 Temperature 2 Function 3 Composition Lecture 3 January 23 Why does the Earth wobble Natural Sources and Anthropogenic Sources Humans Air concentrations are effected by geographic distribution of power plant sulfur dioxide emissions What goes up must come down Rain dust etc Acid rain industrial pollution becomes rain Acidity and pH Clean Air Act Albedo and Reflection Albedo property reflectivity brightness of a surface 100 total reflection high albedo 0 no reflection total absorption low albedo Influenced by color texture and sun Reflection process radiation goes back to space unchanged o Wavelength is not changed just direction 2 types Direct and Diffuse Aerosols and Albedo Particles suspended in Air Many aerosols reflect light Scattering process redirection of radiation without altering wavelength Lecture 4 January 28 Earth s Energy Balance Absorption process Thermal Energy Balance Conduction when heat diffuses through an object passing from molecule to molecule Convection when heat is moved from place to place due to warm and cold air masses moving around Radiation heat moving through space Latent Heat heat stored released when water changes phase Sensible Heat heat you can feel What s on the surface matters
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