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

THANK YOU!