Our Country's Geography

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drought

Back 1

a time of little or no rain

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natural resource

Back 2

something found in nature that people can use

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product

Back 3

something people make or grow, usually to sell

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scarce

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limited

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mineral

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a natural substance found in rocks

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fuel

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a natural resource such coal, oil, or natural gas, that is used to make heat or energy

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conservation

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protecting natural resources and using them wisely

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renewable resources

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resources that can be replaced as they are used up

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recycle

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use resources again

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nonrenewable

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resources that can not be replaced

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pollution

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anything that makes a natural resource dirty or unsafe to use

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classify

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group

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elevation

Back 13

the height of the land

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relief

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differences in elevation

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absolute location

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an exact position on Earth's surface

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lines of latitude

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lines on a globe or map that run east and west

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parallels

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lines of latitude lines that are the same distance apart

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longitude

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lines on a map or globe that run north and south

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meridians

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lines of longitude

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hemisphere

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half of the Earth's sphere

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equator

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halfway line between the North and South Poles

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prime meridian

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divides the Earth into the Western and Eastern Hemispheres.

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Continents

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largest land areas on Earth

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relative location

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When you describe where a place is in realation to other places

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gulf

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a part of an ocean or sea extending into land.

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strait

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a narrow channel of water that connects two larger bodies of water.

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isthmus

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a narrow piece of land that connects two larger land areas

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ancestors

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early family members

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landform

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one of the shapes, such as mountains, hills, valleys or plains, that make up the Earth's surface

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mountain range

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a group of connected mountains

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sea level

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the level at the surface of the oceans.

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piedmont

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an area at or near the foot of a mountain

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plateau

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mostly flat land that rises above the surrounding land

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coastal plain

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low land that lies along an ocean or other large body of water

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peninsula

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land that is almost entirely surrounded by water

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basin

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low, bowl-shaped land with higher ground around it

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canyon

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a deep, narrow valley with steep sides

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ground water

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the water beneath Earth's surface

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source

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the place where a river begins

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channel

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the deepest part of a river or another body of water

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mouth

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the place where a river empties into a larger body of water

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tributary

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a stream or river that flows into a larger stream or river

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river system

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a river and its tributaries

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drainage basin

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the land drained by a river system

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erosion

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the wearing awy of Earth's surface

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floodplain

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the low, flat land along a river

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delta

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the triangle-shaped land at a river's mouth

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precipitation

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water in the form of rain, sleet, or snow that falls to the Earth's surface

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climate

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the kind of weather a place has over a long time

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humidity

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the amount of moisture in the air

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tornado

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a funnel-shaped, spinning windstorm

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hurricane

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a huge tropical storm with heavy rains and winds that reach up 175 miles per hour