Evaporation occurs when the sun heats up
water in rivers, lakes or the ocean and
turns it into vapour or steam. The steam or
vapour then departs the water source and
moves into the air.
occurs when water
vapour in the air
gets cold and
changes back into
forming rain clouds.
Precipitation happens when the water has
condensed so much that the air can no
longer hold it. The clouds subsequently
become very heavy and the water falls back
to earth in the form
of rain, hail, sleet
Collection occurs when the water falls back to
earth and onto the oceans, lakes, rivers and
even the land. When it falls on the land it will
either soak in and form part of the ‘ground
water’ that plants and animals
use to drink. It may also run
over the top soil and collect in
the oceans, lakes and rivers.
Transpiration is the evaporation of water
from plants. It mainly occurs in the leaves
while their stomata is open for the passing
of carbon dioxide and
Percolation refers to the slow movement of
water through the pores in the soil or through
rocky surfaces. This area is currently experience
quite a bit of percolation following of recent
floods. The water is
sitting in the surface
of the soil and not
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