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Waterforms of Pennsylvania. Lesson 2. 5 Themes of Geography. 1. L ocation – location of city or your community 2. P lace – where something is in relation to its surroundings ex. City in contrast to smaller communities - PowerPoint PPT Presentation
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Waterforms of Pennsylvania
Lesson 2
5 Themes of Geography• 1. Location – location of city or your community
• 2. Place – where something is in relation to its surroundings ex. City in contrast to smaller communities
• 3. Human-Environment Interaction – how people depend on the environment or change land
• 4. Movement – connection between places and patterns of movement
• 5. Region – ex. Tourist, political, business, rural, urban, suburban, or even school district
5 Landform Regions of Pennsylvania
Vocabulary – 3 minutes to copy into your notes, leave spaces between words
• Tributary• Reservoirs• Freight• Commerce• Headwaters• Source• Waterbed
• Mouth• Wetlands• Hydroelectric
Power• Glacial forces
Rivers and Tributary Systems
• 45,000 miles of rivers, tributaries, and 256 lakes.• Tributary – smaller stream flowing into a larger
stream of lake• Reservoirs – an artificial lake where water is
stored and collected for water supply• 3 major river systems– Western Pa – 3 rivers– Susquehanna River– Delaware River
Western PA River Systems
• Allegheny River Headwaters– Begins in Pennsylvania, flows into New York, and
back into PA. Flows southward towards Pittsburgh• Monongahela River– SW Pennsylvania, begins in West Virginia and flows
northward to Pittsburgh.– Youghiogheny River – starts in Maryland, flows into
the Monongahela. Wild river – white water rapids.
• Ohio River– Allegheny and Monongahela Rivers meet in
Pittsburgh to form a third river – Ohio River.
– Important in the development of PA and other states they were used as transportation routes for commerce (freight).
– Commerce – the exchange or buying and selling of commodities
– Freight – Cargo
Susquehanna River System
• Headwaters starts in New York, flowing southward through the entire state.– Headwaters – source of a stream– Source – the beginning of a stream of water
• Major tributaries:– West Branch of the Susquehanna– Juniata Rivers
• Serves as a watershed for central PA• Watershed – geographic area or region into which all the
creeks and tributaries flow into a large river.
• Too shallow to allow travel.• Mouth of the Susquehanna River is
Chesapeake Bay– Mouth – part of a river where its water empties
into another body of water.
Delaware River System
• Begins in New York• Forms a natural border between Pennsylvania
and New Jersey• Two major tributaries:– Lehigh River– Schuylkill River
• Philadelphia is a major deep-water port located on the Delaware River– Large ocean ships use this port
Lakes and Wetlands
• More than 2,000 small lakes in PA• Only 76 of them exceed 20 acres in size• Natural lakes created by glacial forces –
created by force when glaciers once covered northern Pennsylvania, digging holes which later became lakes.
• Wetlands – lowland area, such as a marshy or swampy place, that holds moisture.
• Excellent habitat for wildlife.• 200,000 acres of wetlands in PA, mainly
located in the northeast and northwest.
• Reservoirs – An artificial lake where water is stored and collected for a water supply.– Helps keep water flowing at a steady pace during
drier times and prevents flooding after large storms or winter melt.
– Hydroelectric Power – producing electric by harnessing the power of flowing water
– Other uses include recreation – fishing, boating, swimming, and water-skiing, for Pennsylvanians and tourists.
Reservoirs and Dams
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