Physical systems field trip

Physical Systems

Human Effects on Physical Systems

Urban		Rural
	The Tennessee River has changed course over time, causing natural steps up from the river. Sinking Creek has been dredged, causing increased erosion, and an inability to change course.
	In the town of Florence, Alabama, vegetation has been recently planted in an attempt to make the city more environmentally and aesthetically friendly. Vegetation grows naturally in a rural environment. Its growth depends on both natural and human stimuli.
	Residents of Florence sometimes live in basement apartments, and grow gardens in small courtyards. Rural farmers grow crops in Lauderdale county, shown here as a cotton field.

Natural Effects on Physical Systems

	WETLANDS formed by sinkholes, caused by carst limestone underground in the rural environment, form visible patterns on the landscape.
	Animals form distinct patterns on the ground, as shown here by DEER TRACKS.
	TURTLES, such as this slider, lay their eggs in plowed ground like a corn field.
	BEAVERS build dams to back up water and flood woodland environments, changing an upland habitat into a prospective wetland.

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