weathering in which a chemical change takes place in the rock or rock particles
100
what is deposition
the placement of sediment to produce landform
100
what is esker
a long ridge of stratified drift left behind when a glacier retreats
100
what is GPS
global positioning system; a network of orbiting satellites that constantly broadcast radio signals allowing anyone on Earth with a GPS receiver to determine his or her altitude, longitude, and latitude
100
what is mechanical weathering
the physical disintegration of rock into smaller fragments
200
what is constructive force
a natural geological process that makes minerals, rocks, and landforms
200
what is destructive force
a natural geological process that wears down landforms, rocks, and minerals, and carries the bits and pieces to different places on land and sea
200
what is estuary
an area where the wide mouth of a river meets the tidal waters of an ocean
200
what is a ground moraine
broad plains of till left by a retreating edge of a glacier
200
what is moraine
a structure made of sediment dropped by a glacier
300
what is contour interval
the difference in elevation between contour lines; shows how much you would ascend or descend every time you went from one contour line to another
300
what is drumlin
long mounds of glacial drift that run parallel to the path of the glaciers retreat
300
what is frost wedging
the mechanical breakup of rock caused by the expansion of freezing water in cracks and crevices
300
what is a horizon
a layer in a soil profile
300
what is an outwash plain
a region where glacial melt has created streams that dry up and deposit sediment
400
what is a contour line
a line on a map that connects places that have the same elevation above sea
400
what is erosion
the physical movement of weathered material, as by water, wind,ice and so on
400
what is GIS
a geographic information system; a computer system that lets scientists store, share, analyze, and display vast amounts of geographic information
400
what is kame
a large mound of stratified drift left by a retreating glacier
400
what is pore spaces
in soil, a network of holes that lets air and water circulate
500
what is a contour map
a map that shows the different elevations of an area of land; a topographical map
500
what is erratic
individual boulders dropped by a glacier that are often made of igneous and metamorphic rock
500
what is a glacier
a huge mass of ice that does not completely melt over the course of a year
500
what is mass wasting
the downslope movement of sediment because of gravity