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Glossary of Water on Earth

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The _______ covers a little less than 3/4 of the Earth's surface
hydrosphere
A liter of cold water with high salinity is ________ than a liter of water that is either warmer or low salinity.
heavier
Water is not always colder just because it is ________.
farther north
Some currents carry ________
water to the poles.
warmer
Almost all of the earth's ____ water starts as rain or snow.
fresh
Some of the fresh water ____ into the ground
sinks
Rain or melted snow that soaks into the ground is called ___________
groundwater
The layer of rock and soil that groundwater occupies is an ___________
aquafer
The top level of groundwater in an aquifer is the _______
water table
Floating pieces of ice are
icebergs
Water vapor turns to liquid, such as when water droplets form clouds. This is called
condensation
Condensation forms clounds and
dew
_____ forms when water vapor turns into ice crystals
frost
___________ affects the forming of clouds
air pressure
clouds form when air moves _____ to areas of less air pressure
upward
Clouds form when water vapor changes into water droplets or ___________
ice crystals
How are evaporation and sublimation similar
They both change into water vapor.
How are evaporationa nd sublimatin different
sublimation happens more slowly than evaportation
Rain sometimes _______ before it hits the ground
freezes
Frozen raindrops are called _____
sleet
Sleet and hail are _________
not the same
What are 2 ways to treat water for pollutants
filter it and add chemicals
thin wispy clouds at a high altitude are called ______
cirrus
small puffy ball clouds at mid altitude are called ______
cumulus
dark clouds that cover the whole sky are called _______
stratus

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