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39 terms

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

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elevation
the height of the land in relation to sea level
relief
differences in elevation
groundwater
water beneath Earth's surface
source
the place where a river begins
channel
the deepest part of a river or other body of water
mouth
the place where a river empties into a larger body of water
tributary
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
erosion
the gradual wearing away of Earth's surface
flood plain
the low, flat land along a river
delta
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
precipitation
any form of water such as rain, sleet or snow that falls to Earth's surface
climate
the kind of weather a place has over a long time
humidity
the amount of moisture in the air
tornado
a funnel-shaped, spinning wind storm; sometimes called a cyclone or twister
hurricane
a huge tropical storm with heavy rains and winds of at least 74 miles per hour
drought
a long period of little or no rain
weather
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
product
something that people make or grow
scarce
not abundant
mineral
a natural substance found in rocks
fuel
a natural resource, such as coal, oil or natural gas, burned to make heat or energy
conservation
the protecting of natural resources and using them wisely
renewable
able to be made or grown again by nature or people
recycle
to use again; by recycling paper products, we help to conserve trees
non-renewable
not able to be made again quickly by nature or people
pollution
the act of making a natural resource dirty or unsafe to use, such as air, soil or water
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.
coal
rivers in the Great Basin
they drain into low-lying land rather than into an ocean