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Foster-6th Chapter 10
Ch. 10 Earth Science
31
Science
6th Grade
12/01/2008

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Term
water cycle
Definition
the continuous process by which water moves from Earth's surface to the atmosphere and back.
Term
precipitation
Definition
any form of water that falls from clouds and reaches Earth's surface (rain, snow, sleet, hail)
Term
groundwater
Definition
water that fills the cracks and spaces in underground soil and rock layers
Term
tributary
Definition
a stream or smaller river that feeds into a main river
Term
watershed
Definition
the land area that supplies water to a river system
Term
divide
Definition
a ridge of land that seperates one watershed from another
Term
habitat
Definition
the place where an organism lives and where it obtains all the things it needs to survive
Term
reservoir
Definition
a lake that stores water for human use
Term
wetland
Definition
a land area that is covered with a shallow layer of water during some or all of the year
Term
permeable
Definition
characteristic of a material that is full of tiny, connected air spaces that water can seep through
Term
impermeable
Definition
a characteristic of materials, such as clay and granite, through which water does not easily pass
Term
saturated zone
Definition
a layer of permeable rock or soil in which the cracks and pores are totally filled with water
Term
water table
Definition
the top of the saturated zone, or depth to the groundwater under Earth's surface
Term
unsaturated zone
Definition
a layer of rocks and soil above the water table in which the pores contain air as well as water
Term
spring
Definition
a place where groundwater flows to the surface
Term
aquifer
Definition
an underground layer of rock or sediment that holds water
Term
artesian well
Definition
a well in which water rises because of pressure within the aquifer
Term
geyser
Definition
a fountain of water and steam that builds up pressure underground and erupts at regular intervals
Term
irrigation
Definition
the process of supplying water to areas of land to make them more suitable for growing crops
Term
conservation
Definition
the practice of using less of a resource so that it will not be used up
Term
water pollution
Definition
the addition of any substance that has a negative effect on water or the living things that depend on the water
Term
pollutant
Definition
a harmful substance in the air, water, or soil
Term
point source
Definition
a specific source of pollution that can be identified
Term
nonpoint source
Definition
a widely spread source of pollution that is difficult to link to a specific point of origin
Term
"im" as in immature
Definition
means "not" as in not mature
Term
"im" as in impermeable
Definition
means "not" as in not permeable
Term
"un" as in unbelieveable
Definition
means "not" as in not believable
Term
"un" as in unsaturated
Definition
means "not" as in not saturated
Term
"non" as in nonrecognizable
Definition
means "not" as in not recognizable
Term
"non" as in nonpoint source
Definition
means "not" a specific source to point to as the cause, or origin
Term
"non" as in nonpoint source
Definition
means "not" a specific source to point to as the cause, or origin
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