Download - Water as a resourse
WATERAS A RESOURCE
WATERChemists say water is a
compound, a combination of different materials. Water is a
combination of oxygen and hydrogen atoms.
WATER SUSTAINS …
AGRICULTURE
Life
ENERGY
INDUSTRY
WATER CYCLE
Is a continuous movement of water from the air to the
earth’s surface and back to the air again.
Transpiration - a process in which plants give off water vapor into the atmosphere.
EVAPORATION - is when the sun heats up water in rivers or lakes or the ocean and turns it into vapor or steam. The water vapor or steam leaves the river, lake or ocean and goes into the air.
WATER CYCLE
Condensation - water vapor in the air gets cold and changes back into liquid, forming clouds.
Precipitation - is the process by which water falls from clouds to the earth as rain, snow, sleet and hail.
WATER CYCLE
WATER BUDGET
The continuous cycle of evaporation, condensation and
precipitation gives the earth its water budget.
Local Water Budget - water budget of a particular area.
RUNNINGWATER
Running water is the most powerful agent of erosion.
Continents are eroded primarily by running water at
an average rate of 1 inch every 750 years.
Water that falls on the ground but does not soak into the soil is known as runoff. Runoff flows into
streams. Streams join together to make rivers, and eventually rivers flow into the ocean.
STREAM
Stream Erosion - a stream gradually become wider and deeper as it erodes
its banks and bed.
STREAM
WORK OF STREAM
They PROTECT against floods, FILTER pollutants, RECYCLE potentially-harmful
nutrients, and PROVIDE food and habitat for many types of fish. These streams also play a critical role in maintaining the quality and
supply of our drinking water, ensure a continual flow of water to surface waters, and help recharge underground aquifers.
A river is a natural watercourse
usually freshwater, flowing towards
an ocean, a lake, a sea, or another
river.
RIVER
STAGES OF RIVER
BASE
LEVEL
Is defined as the lowest level
to which a stream can erode its channel.
FLOOD CONTROL
Flooding is a natural stage in the development of a
stream and will continue to occur as the river system
matures.
Methods of Flood Control
– Forest and soil conservation that prevent excess runoff during periods of heavy rainfall.
INDIRECT
METHOD
– Building of dams, artificial levees and floodways
DIRECT
METHOD
IMPORTANCEOF
WATER
Effects of UNCLEAN WATER
The pollution of rivers, streams, and oceans has become a serious
problem around the world. Pollution can come from many sources,
including factories, farms, sewage, and illegal dumping.
Prepared By: Cayas, Marie Faith A. IV-23 BSE Values Education
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