Pennsylvania Chapter 1 Vocabulary

Imaginary line that divides one place from another

• boundary
• border
• separation
• division

Shape that makes up the Earth's surface

• geography
• terrain
• topography
• landforms

The study of Earth and all the different things on it

• geography

• biology
• chemistry
• astronomy

Land area of nearly flat land

• hill
• mountain
• valley
• plain

swirling funnel of wind that moves over the ground at high speeds

• cyclone
• whirlwind
• tornado
• hurricane

low patch of land between hills

• valley
• dune
• plateau
• mesa

A narrow chain of mountains

• line

• belt

• range

• ridge

A high, flat area of land that rises steeply above the surrounding land

• hill
• plateau
• mountain
• valley

smaller river or stream that flows into a larger river

• delta
• tributary
• estuary
• confluence

made up of all the streams and rivers that flow into one larger river

• watershed
• river system

• tributary
• drainage basin