Essay about Geography: Tropical Cyclone and Air Warm Air

Submitted By harrygn
Words: 1930
Pages: 8

Topic 2
What is Geography? * -To classify, to compare, to generalize, to ascend from causes and in doing so to trace out the great laws of nature and to mark their influence upon mankind *
Geodesy - Study of earths shapes *
Cartography- Art and science of map making. *
Place – Has spatial boundaries, theses differences may be physical or cultural. *
Environment – How humans view a landscape, how does environment effect us. * * Development Of Geography – know the order
Phase 1-Exploration of the world
Phase 2-Establishment of the Discipline
Phase 3-Dominance of regional geography
Phase 4-Emergence of physical and human geography
Phase 5-Physical Geo, Integrated Geo, Human Geo *
Topic 3 & 4– How we Map the Earth/ Remote Sensing

Knowledge – we make best inferences based on the past (always a degree of uncertainty) *
Social Ethical Issues? – much of cartography basis comes from psychology
Many communication decisions are culturally based
Cognitive Issues
Cognition – perception, thought process, prior experience *
GIS – Geographic Info System to a location on earth
Is a computer system used for storage, retrieval
Data Base may include- Postal code, addresses ect..
Display component is Cartography
Raster data –is made up of pixels
Vector data- made up of nodes or vertex *
GPS- Gives us coordinates ( Lat/Long) *
S/A – selective availability ( USA scrambles signals to make less accurate but can turn them on at anytime to be more effective)
WAAS – Wide Area Augmentation system ( ~ 3 m) *
Latitude- angular measure from equator
Longitude- Requires a given point ( has multiple points)
Prime Meridian is the international Dateline
Usually cause by tech glitches in the system
Multi path when a signal bounces off several objects before reaching receiver
Atmosphere to travel through
12:00-1:00 is the worst time to use because most people in the world are using it. *
Cartographic Scale
1/100 -more detail
1/10000 -more area *
Remote Sensing
Passive- camera
Active – Camera w/ flash
Canada is a leader in remote sensing *
Electromagnetic (EMR)
Radiation Travel at ~3x 10^8 m/s
Emitted by all objects above -273 C that would be absolute 0
Visible Light is from 400nm-700nm *
Orbit Types of Sattelites
Sun Synchronous – Rotates around N and S pole crosses same point on earth during each rotation
Landsat 7, Terra, Aqua, Navster
Typical of meterological and communication satellites
GEOS, Anik
Radarsat and Envisat
Not visible light Radar Image *
Topic 5 – Earth Structure and Dynamics

Relief- Vertical elevation changes of a landscape
Impacts- Weather, climate, ocean currents
Orders of Relief 1- Continents and Ocean Basins 2- Mountain, plains, lowlands 3- Individual features at local level

What is responsible for earths relief? *
Endogenic – Processes within the earth *
Causes movement that builds up the surface
Controls where molten rock hardens to create the solid rock of the continents
Ex. Radioactive decay *
Exogenic- Surface processes
Wears down the bumps on the surface to create what we see today.
Ex. Running, H20, wind

Earths Internal Structure *
Inner Core- Iron w/ high density
Density – how many particles are within a specific volume
Inner Core ~ 13.5 g/cm^3
Density increases as layers become closer to earth
Lisosphere 70 km *
Convection in the Mantle
Radioactive decay inner/outer core, layers about become heated (becomes less dense due to increase in heat)
Friction forms between lithosphere plates and mantle material which may cause plates to push pull *
Plate Boundaries *
Divergent -(thinning) * Sea floor spreading centers * Plates spread apart * New crust formed
Convergent- (thickening) * Plates come together * On plate pushed underneath
Transform – (minor thickness