SFX-4th-SS-Less 3, 4 & 5

39 terms by annat146

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the height of the land in relation to sea level


differences in elevation


water beneath Earth's surface


the place where a river begins


the deepest part of a river or other body of water


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


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

river system

a river and its tributaries

drainage basin

the land drained by a river system


the gradual wearing away of Earth's surface

flood plain

the low, flat land along a river


the triangle shaped land at a river's mouth

three main parts of a river

(1) source, (2) path or channel, (3) mouth

levees and dams

these are built to control flooding on rivers


any form of water such as rain, sleet or snow that falls to Earth's surface


the kind of weather a place has over a long time


the amount of moisture in the air


a funnel-shaped, spinning wind storm; sometimes called a cyclone or twister


a huge tropical storm with heavy rains and winds of at least 74 miles per hour


a long period of little or no rain


day-to-day conditions of a place

places near the equator

these places have warmer climates

places far from the equator

these places have cooler climates

large bodies of water

they help keep nearby places cooler in summer and warmer in winter

climate is affected by __________

elevation; higher elevations are usually cooler

natural resource

something found in nature that people can use; soil, water and trees


something that people make or grow


not abundant


a natural substance found in rocks


a natural resource, such as coal, oil or natural gas, burned to make heat or energy


the protecting of natural resources and using them wisely


able to be made or grown again by nature or people


to use again; by recycling paper products, we help to conserve trees


not able to be made again quickly by nature or people


the act of making a natural resource dirty or unsafe to use, such as air, soil or water


our most important natural resource; we cannot survive without it

fertile soil

an important natural resource for American farmers

most abundant fuel source in the U.S.


rivers in the Great Basin

they drain into low-lying land rather than into an ocean

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