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29 Cards in this Set
- Front
- Back
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Humans .....
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can effect the flow of water too.
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Dams ....
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are built to block the flow of water.
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Removing plants from an area can cause a temendous amount of damage when water flows through a ......
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barren area.
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Adding grass or other plants can limint the amount of .....
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erosion created due to the flow of water.
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Removing wetlands and swampy areas can .....
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increase problems.
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Things in mother nature can effect the _________ flow of water.
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flow
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Flow ....
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is defined as the amount of water that passes a given point in the channel in a given amount of time.
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The strength or speed of the moving water can also effect the ......
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shape of the land.
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The greater the flow of a stream .......
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the larger the material it can transport, increasing the size from grains of sand, to pebbles, to gravel, and finally to boulders.
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By transporting earth materials, ....
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the water cuts through and changes land.
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Streams that merge (converge) have a greater flow than either of their source streams because....
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the amount of water in the channel suddenly increases.
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The presence of additional water in the channel creates more interaction between....
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the water and the streambed and increases erosion and load.
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Rivers,usually, carry the ....
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largest load.
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Runoff....
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is the term scientists use for water that flows over the surface of land.
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Ground water .....
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is the water that soaks into the soil and seeps gradually downward.
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When ground water flows into the soil, it moves slowly downward through the spaces between the soil particles or __________ _________, under the force of gravity.
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pore space
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When examining the different earth materials, we realize soil is a combination of ______________ ____________ (weathered rock fragments) and _________________ ___________ (living and decayed plant and animal matter), _________ and ___________.
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inorganic matter, organic matter, air and water
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Eventually, precipitaion and soil erosion create a ........
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stream valley.
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Streams shape the valleys .....
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throught which they flow.
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Downstream other small streams or _____________, join the flow.
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tributaries
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Tributaries flowing together make a ........
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river.
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Under teh pull of gravity (sloped stream bed) some rainwater soaks into the soil while the remainder flows downhill over the land surface as ........
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runoff.
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_____________ originate in the tiny channels, or _____________, carved by rainwater as it flows over land and gradually removes loose particles.
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streams, rivulets
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Over time, these rivulets converge and deepen, forming ...........
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gullies.
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The ____________, or origin of streams includs water that flows over and through the surface of the land.
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source
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This water can come from ______ and from _________ melting high in the mountains.
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rain; snow
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_____________ feed many streams.
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Springs
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Springs occur when ......
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water can come slowly under the ground in rock or soil finds its way onto the earth's surface.
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Springs also occur where water flows out of large cavities, such as .........
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caves.
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