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Water cycle

Water and water cycle definitions

TermDefinition
AQUIFER An underground layer of permeable rock or soil that stores water and can be small or thousands of kilometres long.
GROUND WATER The water beneath the surface of the ground containing mostly water that has seeped down. Source of water for wells and springs.
HAIL Precipitation that has frozen into small pellets of hard snow/ice and falls during thunderstorms. (Ie frozen raindrops).
LEACH The leaking of soluble substances such as nutrients through percolating water and they often enter waterways such as rivers.
PERCOLATION The movement of liquid through a porous substance eg filtering of rain through the soil.
PRECIPITATION Falling water in the form of rain, snow, hail or sleet from airborne clouds.
RUN OFF Also known as surface run off when rainwater does not percolate the soil but runs off the soil surface and often takes valuable nutrients with it.
SNOW Precipitation from clouds in the form of flakes of ice crystals.
SOLID State of matter where particles are in a fixed position so the substance keeps its shape.
SLEET Partially frozen raindrops (ice in the raindrop is melting as it rains).
THUNDER A loud cracking or deep rumbling sound caused by rapid expansion of atmospheric gases which are suddenly heated by lightning (shockwave).
WATER CYCLE The circulation of earth's water in which water: evaporates from the sea to the sky; condenses to form clouds; falls to earth in the form of rain or snow to cover mountains or enter waterways; and the cycle repeats.
EVAPORTATION Water changes from liquid to gas and travels from waterways to the atmosphere.
TRANSPIRATION Water movement from leaves of plants to the air. Helps to cool the plant down and suck water up the plant from the roots. This water evaporates up into the atmosphere as it leaves the leaf.
CONDENSATION When water changes from gas (vapour/steam) to liquid water (rain).
ACCUMULATION Build up of water in the clouds or in waterways
RAIN Condensed water vapour falling from clouds in liquid droplets.
WATERWAYS Bodies of water such as rivers, stream, creek, sea, pond, lagoon etc.
Created by: kjsime