The hydrologic cycle describes the continuous movement of water on, above and below the Earth's surface, changing states between liquid, vapor, and ice. Water moves from rivers to oceans through evaporation, condensation, precipitation, infiltration, runoff, and subsurface flow. These processes include rain, snow, infiltration into the ground, surface runoff, evaporation into the air, storage, and extraction for human use as the water flows across land and through the atmosphere.

1. The Hydrologic Cycle – Grade 11

2.  The water cycle, is
the continuous
movement of water
on, above and
below the surface
of the Earth.
 Water can change
states among
liquid, vapor, and
ice at various
places in the water
cycle.

4.  The water moves from
river to ocean, or from
the ocean to the
atmosphere, by the
processes of
evaporation, condensa
tion, precipitation, inf
iltration, runoff, and
subsurface flow.

5.  Precipitation occurs as rain, snow, hail, fog
drip, graupel, and sleet.
 Infiltration is the flow of water from the ground
surface into the ground. Once infiltrated, the water
becomes soil moisture or groundwater.

12. The variety of ways by
which water moves across
the land, includes both
surface runoff and channel
runoff. As it flows, the
water seep into the ground,
evaporate into the air,
become stored or be
extracted for agricultural or
other human uses.

13.  Water turns from a
liquid to a gas as the
water moves through
the air. The source of
energy for evaporation
is solar radiation.
Evaporation is also
transpiration from
plants.

14.  The change from solid water (snow or ice) to water
vapor.
 Advection is the movement of water — in
solid, liquid, or vapor states — through the
atmosphere.

15.  Water vapor turns to liquid water droplets in the
air, creating clouds and fog.
 Transpiration is the release of water vapor from
plants and soil into the air. Water vapor is a gas
that cannot be seen.