The document summarizes the water cycle, which is a continuous process where water evaporates from surfaces, rises into the air as vapor, condenses to form clouds, and falls back to earth as precipitation. It then may evaporate or transpire from plants again. The water cycle consists of evaporation, condensation, sublimation, precipitation, transpiration, runoff, and infiltration. Precipitation occurs when clouds become too full and water falls as rain, snow, sleet, freezing rain or hail depending on temperature. The water then either runs over the ground as runoff or soaks into the soil in infiltration.

1. Water Cycle
NSC26 – 101TM
Quilang, Micah R.
Palomar, Clara
Ocampo, John Will

2. What is Water Cycle?
Also known as HYDROLOGIC
A continuous cycle where water
evaporates, travels into the air and
becomes part of a cloud, falls down to
earth as precipitation, and then
evaporates again.

3. It consist of the following
Evaporation
Condensation
Sublimation
Precipitation
Transpiration
Runoff
Infiltration

4. Step 1: Evaporation
It is a process where water at the
surface turns into water vapors.
It absorbs heat energy from the sun
and turns into vapors.

5. Step 2: Condensation
As water vaporizes into water vapor, it
rises up in the atmosphere.
At high altitudes the water vapors
changes into very tiny particles of
ice/water droplets because the
temperature at high altitude is low.

6. Step 3: Sublimation
 Sublimation also contributes towater vapors in
the air.
 A process where ice directly converts into
water vapors without converting into liquid
water.
 This phenomenon accelerates when the
temperature is low or pressure is high

7. Step 4: Precipitation
 The clouds (condensed water vapors)
then pour down as precipitation due to
wind or temperature change
 This occurs because the water droplets
combine to make bigger droplets.
 When the air cannot hold any more water,
it is precipitates

8. Types of Precipitation

9. Rain
 Technically, rain isn’t just any liquid that falls out of
the sky. Rain is defined as being water droplets of
0.5mm or greater. Droplets smaller than half a
millimeter are classified as drizzle. Raindrops
often form when small cloud particles collide and
stick together, forming bigger drops. Once the
drops get large enough, they are too small for
rising air to support, gravity draws them down to
the ground. In air below 0 °F, raindrops may start
as snow or ice crystals but melt when they fall into
warmer air.

10. Snow
Snow actually occurs almost every time
it rains, but the snow often melts before
it reaches the ground. There is a
version of virga produced by snow
called fall streaks.

11. Sleet and Freezing Rain
Sleet and freezing rain occur under
very similar conditions. Sleet is pellets
of ice that form when snow falls into a
warm layer and melts into rain. The
rain then falls into a freezing layer of air
that is deep enough to refreeze the
raindrops into pellets.

12. Hailstones
 Hailstones are large chunks of ice that fall
from large thunderstorms.

13. Step 5: Transpiration
Similar to evaporation, only water is
evaporated off the leaves of plants after
it is absorbed through the roots.

14. Step 6: Runoff
As the water pours down, it leads to
runoff
A process where water runs over the
surface of the earth.
When the snow melts into water it also
leads to runoff

15. Step 7 (last) - Infiltration
 Infiltration is the process by which
precipitation or water soaks into
subsurface soils and moves into rocks
through cracks and pore spaces. As we
mentioned before, the bulk of rainwater
and melted snow end up infiltrated.
 It moves deep into the soil

16. THANK YOU 