Chapt. 1 WG final
Terms
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- equator
- line that circles the globe halfway between North & South poles
- frost wedging
- when water freezes to ice in a crack in a rock; ice widens crack & eventually splits rock
- horse latitudes
- spaniards sailing to the Americas & threw horses overboard
- relative location
- located in relation to another place
- lava
- molten rock, producing plateau-like sheild volcano
- plain
- flat or generally rolling area w/ few changes in elevation
- geography
- study of where people, places, & things are located
- Prime Meridian
- O degrees run through the Royal Observatory in Greenwich, England
- 5 themes of geography
- location, place, human-enviornment interaction, movement, & regions
- loess
- windblown deposits of mineral- rich dust & silt
- moraine
- ridge-like piles of rocks debris from glaciers
- spreading
- when two plates move away from eachother
- culture
- the way of life the distinguishes people
- 3 agents of erosion
- water, wind, & glaciers
- glacier
- huge slow- moving sheets of ice
- plateau
- raised area, generally level
- subduction
- when two plates collide
- latitude
- imaginary lines that run parallel to the equator
- hemisphere
- the equator divides the world into two halves
- acid rain
- chemicals in the polluted air combined with water vapor & fall back to the earth
- converging
- when plates of similar types collide
- geology
- the study of the earth's physical structure & history
- longitude
- meridians that run North & South
- core
- the center of the earth that consists of very hot metal, mainly iron mixed with nickel
- water & carbon dioxide
- 2 forces in chemical weathering
- mantle
- thick layer of rock
- erosion
- the movement of materials such as gravel, soil, & sand
- continent
- large landmasses in the ocean
- mechanical weathering
- occurs when rock is broken or weakened physically
- continental drift
- wegener's theory of one "supercontinent"
- plate techtonics
- the earth's outer shell isn't one solid peice of rock
- volcanism
- formed when magma breaks through the earth's crust
- Pangea
- one supercontinent that broke up & separated all the other continents
- absolute location
- its position on the globe
- faulting
- stresses on rocks or breaks in the earth's crust
- crust
- rocky surface layer