Transcript The Water Cycle

The
Water
Cycle
By:
Saiesh Kalva
Vivian Tran
Huan Nguyen
What is the Water Cycle?

70% of the Earth is covered by water.

Water even exists as a gas known as water vapor.

Now all this water must move around, and this is where the water cycle
comes in.

The water cycle, also known as the hydrologic cycle, is the constant
movement of water between the land, atmosphere, and bodies of
water.
Overview of the Water Cycle
The water cycle is made up of several steps,
similar to all processes.
4 steps of the Water Cycle:
Evaporation/Transpiration
Condensation
Precipitation
Redistribution
Evaporation
Evaporation- The transfer of water from
Earth’s surface to the troposphere.
The main factors of evaporation include
wind speed, temperature, humidity, and
radiation.
Water Vapor
Water vapor is the gaseous form of water.
This water vapor condenses to form clouds,
which we will get to in a later time.
Transpiration

The evaporation of water through
stomata, in the leaves of plants.
 Evaporation
and transpiration combined
is known as evapotranspiration.
Condensation
Condensation is where water vapor in the air
condenses and saturates the air.
These water droplets clump together and
form what we call clouds.
When does Condensation stop?
Condensation
occurs until air is
saturated
Water condenses around
particles
Particles become too heavy
and fall
Beginning of precipitation
Precipitation
After the water condenses, according to
our cycle, the water must come back to
Earth. It does so through precipitation.
Precipitation is the movement of water from
the atmosphere back to Earth’s surface.
Types of Precipitation
Hail
Rain
Sleet
Snow
Rain
Most
common form of
precipitation
Can occur almost anywhere
Rain drops can fall as fast as 22
mph
Frozen Rain
Sleet
 Precipitation
that has frozen or
refrozen before it has hit the surface
 Smaller than hail
 Known as ice pellets
 Below freezing in atmosphere
Snow
Softest
form of precipitation
Occurs at certain times in
certain places
Atmosphere cooler than when
with sleet
Hail
Irregular
lumps of ice
Generally the most
destructive
Most rare type of
precipitation
Similar to crushed ice
Redistribution of Precipitation
 Evaporation
 Vegetation
 Infiltration-runoff
 Infiltration-
groundwater
Ice and its role
 Glaciers
 Soil
moisture turns into permafrost
 Change from 1/3(33%) of Earth to about
1/8(12%) of Earth
How have people affected the
Water Cycle?
 Building
dams and reservoirs
 Cutting down trees, and creating
buildings
 Emission of carbon dioxide
How does the Water Cycle
affect people?
 Provides
precipitation for humans
 Effects decisions on plans
How does the Water Cycle
affect Geography?
 Changes
climate
 Erosion
 Creates
bodies of water