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UNIT 3. How much of the Earth is watter?
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Meanders (upper, middle or lower course)
Middle course
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Mouth of river (upper, middle or lower course)
Lower course
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Evaporation: Water changes from a __________ to a ___________, called water vapour.
liquid / gas
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Label the letter "d)"
precipitation
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Label the letter "b)"
porous rock
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River becomes wider (upper, middle or lower course)
Middle course
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It is a flowing stream of fresh water.
River
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They contain about 95% of all water on Earth
Oceans and seas
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________ are large bodies of water that are completely surrounded by land and are not connected to ________
lakes / oceans
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A __________ is the land over which a river flows.
River bed
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River meets flatter land (upper, middle or lower course)
Middle course
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Label the letter "c)"
spring
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The point where two rivers meet is called a ___________
Confluence
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A ______________ is a river that empties into a bigger river.
Tributary
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A ____________ is a group of river basins that empty into the same sea.
Drainage basin
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Label the letter "a)"
impermeable rock
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River is small (upper, middle or lower course)
Upper course
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Source (upper, middle or lower course)
Upper course
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Empties into the sea (upper, middle or lower course)
Lower course
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Water flows quickly (upper, middle or lower course)
Upper course
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A _____________ is an area of land that is drained by a river and its tributaries.
River basin
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Precipitation: Water can fall as a liquid (rain) or as a ____________ (snow or hail).
solid
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Label the letter "e)"
well
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Condensation: Water changes from a ____________ to a __________.
gas / liquid
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They are very thick masses of ice that cover large areas of land.
Glaciers
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River becomes even wider (upper, middle or lower course)
Lower course
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Okay!
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