Water Basic Source Presentation
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The document discusses the properties and importance of water, describing how water molecules are formed, the water cycle, and how water is used by living things and in daily life. It explains that water is essential for life, making up over half of the human body, and is the most common substance on Earth, existing in solid, liquid, and gas forms through the natural water cycle. The water cycle involves evaporation, condensation, precipitation, and the flow of water from rivers to reservoirs, for human use and back into the environment.
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This document provides a simple guide to water, explaining the chemical formula H2O as two hydrogen atoms bonded to one oxygen atom. It lists some popular water parks around the world and the five best selling bottled waters. It also answers common questions about water, noting there are approximately 1,260,000,000,000,000,000,000 liters of water on Earth and it covers around 75% of the planet's surface.
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Water is the most abundant molecule on Earth, composing 70-75% of the Earth's surface. It has many important uses including drinking, cooking, cleaning, agriculture, and generating electricity. Water is an excellent solvent, with many substances dissolving in it to form solutions. As a solvent, water plays a vital role in biological processes like respiration and photosynthesis, as well as industrial processes like manufacturing food, chemicals, metals, paper, and more. It transports nutrients, waste products, gases, and other substances throughout living things and ecosystems.
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Water is essential for life and has many unique chemical and physical properties that make it suitable for sustaining living organisms. It covers 70% of the Earth's surface and is continuously circulated through the water cycle of evaporation, transpiration, precipitation, and runoff. Fresh water makes up only a small portion of the total water on Earth and is found primarily as ice caps, glaciers, groundwater, and surface water in lakes and rivers. Throughout history, access to fresh water has been crucial for the development of human civilizations. Today, water pollution and contamination pose threats to public health.
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2) Salinity in open oceans ranges from 33-38 parts per thousand but varies more in coastal areas due to freshwater influx or evaporation.
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This document provides a simple guide to water, explaining the chemical formula H2O as two hydrogen atoms bonded to one oxygen atom. It lists some popular water parks around the world and the five best selling bottled waters. It also answers common questions about water, noting there are approximately 1,260,000,000,000,000,000,000 liters of water on Earth and it covers around 75% of the planet's surface.
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Water is essential for life and has many unique chemical and physical properties that make it suitable for sustaining living organisms. It covers 70% of the Earth's surface and is continuously circulated through the water cycle of evaporation, transpiration, precipitation, and runoff. Fresh water makes up only a small portion of the total water on Earth and is found primarily as ice caps, glaciers, groundwater, and surface water in lakes and rivers. Throughout history, access to fresh water has been crucial for the development of human civilizations. Today, water pollution and contamination pose threats to public health.
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- 3. Daily Use Living Things Drink Cook Human Plant The Important The Important Animal Wash of Water Transportation Particular Time Use Fire Sport
- 4. Water is the common name applied to the liquid form (state) of the hydrogen and oxygen compound H2O. When molecular hydrogen (H2) and oxygen (O2) are combined and allowed to react together, energy is released and the molecules of hydrogen and oxygen can combine to form water. O H H = Hydrogen H O = Oxygen H++H++ O2- H2 O (Water) 2H2+ O2 H2 O
- 5. 3. Water vapour condenses to form clouds 3 4. Rain water falls 4 2 to form rivers. 2. Water vapour is carried up into the air. 5 5. Rivers flow into the sea 1. Water evaporates 1
- 6. A. SNOW AND ICE ON MOUNTAIN TOPS MELT AND FLOW INTO RIVERS A B. RESERVOIRS ARE MADE TO STORE WATER FOR OUR USE C. WATER FROM RESERVOIRS IS B CLEANED AT WATER WORKS AND PUMPED TO OUR HOUSES D D. WASTE WATER FROM OUR HOUSES IS CLEANED AT THE C SEWAGE WORKS AND PUMPED BACK INTO THE SEA
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