Presentation is loading. Please wait.

Presentation is loading. Please wait.

Water - structure many-sided. Water, oxide hydrogen, H20, the elementary steady in usual conditions a chemical compound of hydrogen with oxygen (11,19.

Similar presentations


Presentation on theme: "Water - structure many-sided. Water, oxide hydrogen, H20, the elementary steady in usual conditions a chemical compound of hydrogen with oxygen (11,19."— Presentation transcript:

1 Water - structure many-sided

2 Water, oxide hydrogen, H20, the elementary steady in usual conditions a chemical compound of hydrogen with oxygen (11,19 % of hydrogen and 88,81 % of oxygen on weight), molecular weight 18,0160; a colorless liquid without a smell and taste (in thick layers has bluish color).  Water cycle. Water cycle.  The states of water. The states of water.  Water and people Water and people Water - structure many-sided  The main about water. The main about water.

3  Water cycle. Water cycle.  The states of water. The states of water.  Water and people Water and people Water - structure many-sided  The main about water. The main about water.

4  Water cycle. Water cycle.  The states of water. The states of water.  Water and people Water and people Water - structure many-sided  The main about water. The main about water.

5  Water cycle. Water cycle.  The states of water. The states of water.  Water and people Water and people Water - structure many-sided  The main about water. The main about water.

6 1 The heat soaks up water from the oceans, lakes, rivers in a process called evaporation. evaporation. 2 As the water mixes with the air it forms water vapor. As the air cools, the water vapor forms clouds. This is called condensation. condensation. 3 The water vapor is carried inside clouds by wind over land where it rains or snows. 4 Most of the water is immediately returned to the seas by rain (precipitation). (precipitation). The water cycle is the only way that Earth can be continually supplied with fresh water. The heat from the sun is the most important part of renewing our water supply.

7 Evaporation: One of the main influencing factors in the water cycle. Water is continually transforming from liquid to gas from the sun's energy through a process called evaporation. Condensation: Water, when heated, rises in the form of water vapor into the air. Upon striking cool air, the vapor condenses into tiny droplets of water or moisture. These collect upon tiny particles of dirt in the air to form clouds. When condensed further, thismoisture falls from the clouds in some form of precipitation (ie: rain, snow, etc...) Precipitation: Precipitation is water droplets or ice crystals that fall to earth. Rain, snow, sleet (ice pellets), and hail (large frozen raindrops) are the different forms of precipitation.

8 1970 WARNING SIGNS In 1970, water consumption worldwide was half what is today. With 80% of all sickness in the developing world linked to polluted water, and with populations sharply on the rise, the urgency of water management became apparent DRY AND DIRTY Over 1,3 billion people have no access to clean water. At least 2,2 million people die annually from diseases related to poor sanitation and contaminated drinking water –that is about 10,000 deaths from bad water (or no water) each day PARCHED POPULACE The United Nations estimates that the world is per capita water supply will drop by 1/3 in the next 20 years. The worst strain will be in Africa and the Middle East, where populations are growing fast and rivers are running dry.

9 EVERY MINUTE, 7 PEOPLE DIE FROM BAD WATER OR NO WATER! WATER FOR THE PEOPLE Population and water distribution don’t always correspond, often leaving highly populated regions with little access to water. This is most true in Asia, which has support 60% of the world’s population with only 36% of the world’s water. About 2 million tons of waste are dumped every day into rivers, lakes and streams. One liter of wastewater pollutes about eight liters of freshwater. Asia S. America N.America Africa Europe Oceania 60% 6% 8% 13% 1%


Download ppt "Water - structure many-sided. Water, oxide hydrogen, H20, the elementary steady in usual conditions a chemical compound of hydrogen with oxygen (11,19."

Similar presentations


Ads by Google