About water
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This are the results of the research that the students of B' class did for the water and its use. The research was made during the lesson of technology for our participation on the comenius project "Be globally aware"
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water
This ppt prepared by Student -Teachers from Thiagarajar College of preceptors-Madurai for Demo class.
The importance of water
Water is essential for life and good health. It transports nutrients, aids digestion and metabolism, and removes waste from the body. Most health officials recommend drinking at least 8 glasses of clean water per day. Water can also aid in weight loss by suppressing appetite and helping the body burn stored fat. However, much of the Earth's water is contaminated, so point-of-use water treatment systems are necessary to provide clean drinking water.
Water
This document discusses water pollution and water purification. It begins by introducing the topic and lecturers. It then defines the water cycle and its importance. Methods of water purification like distillation, ion exchange, filtration, and reverse osmosis are described. The importance of dissolved oxygen for aquatic life is discussed. Finally, sources of water pollution from sewage, agriculture, and industry are outlined.
Water
This presentation summarizes information about water. It discusses that two-thirds of the Earth's surface is covered by water, with nearly 98% located in the sea. Water exists in three states - liquid, solid, and vapor. The boiling point of water is 100 degrees Celsius while the freezing point is 0 degrees Celsius. The document also outlines the process of purifying water, which involves screening, storage, aeration, filtration, and sterilization to remove solid impurities, allow germs to be destroyed by UV light, oxygenate the water, filter it through sand and gravel, and use chlorine to kill remaining bacteria.
Ravi raj sharma
This document discusses water on Earth. It states that water exists in solid, liquid, and gas forms in our solar system, and that two-thirds of Earth is covered by water. While the total quantity of water on Earth is around 1386 lakh cubic meters, only 0.33% of that is available for direct human use, found mainly in rivers, lakes, and groundwater. The document also describes the water cycle by which water is constantly recycled through evaporation, precipitation, and runoff, keeping the overall amount of water on Earth relatively constant. Key uses of water mentioned include agriculture, drinking, washing, fire extinction, recreation, and industrial applications.
Sources of water and its neccessity
Surface and ground water sources are pinpointed, highlighting the genuine sources of public water supply. In further slides, factors governing the selection of a particular source of supply are pointed out; and finally, the necessity of water to mankind is herein.
Water and its impurities
The document discusses water impurities and methods for purifying water. It notes that while 71% of Earth is covered in water, only a small portion is potable. Water becomes polluted through waste and spillage. Impurities can be soluble, like salt, or insoluble, like sand. Soluble impurities are removed through evaporation or distillation. Insoluble impurities are removed by sedimentation, decantation, or filtration. Finally, drinking water is purified further through boiling or chlorination after removing other impurities.
causes,impacts,effects,solution of water pollution of Dhanmondi Lake
a questionnaire survey on 81 peoples of different classes.our objective is to know peoples opinion or thoughts on causes,effects,impacts,solution of water pollution of Dhanmondi Lake.
Recommended
water
This ppt prepared by Student -Teachers from Thiagarajar College of preceptors-Madurai for Demo class.
The importance of water
Water is essential for life and good health. It transports nutrients, aids digestion and metabolism, and removes waste from the body. Most health officials recommend drinking at least 8 glasses of clean water per day. Water can also aid in weight loss by suppressing appetite and helping the body burn stored fat. However, much of the Earth's water is contaminated, so point-of-use water treatment systems are necessary to provide clean drinking water.
Water
This document discusses water pollution and water purification. It begins by introducing the topic and lecturers. It then defines the water cycle and its importance. Methods of water purification like distillation, ion exchange, filtration, and reverse osmosis are described. The importance of dissolved oxygen for aquatic life is discussed. Finally, sources of water pollution from sewage, agriculture, and industry are outlined.
Water
This presentation summarizes information about water. It discusses that two-thirds of the Earth's surface is covered by water, with nearly 98% located in the sea. Water exists in three states - liquid, solid, and vapor. The boiling point of water is 100 degrees Celsius while the freezing point is 0 degrees Celsius. The document also outlines the process of purifying water, which involves screening, storage, aeration, filtration, and sterilization to remove solid impurities, allow germs to be destroyed by UV light, oxygenate the water, filter it through sand and gravel, and use chlorine to kill remaining bacteria.
Ravi raj sharma
This document discusses water on Earth. It states that water exists in solid, liquid, and gas forms in our solar system, and that two-thirds of Earth is covered by water. While the total quantity of water on Earth is around 1386 lakh cubic meters, only 0.33% of that is available for direct human use, found mainly in rivers, lakes, and groundwater. The document also describes the water cycle by which water is constantly recycled through evaporation, precipitation, and runoff, keeping the overall amount of water on Earth relatively constant. Key uses of water mentioned include agriculture, drinking, washing, fire extinction, recreation, and industrial applications.
Sources of water and its neccessity
Surface and ground water sources are pinpointed, highlighting the genuine sources of public water supply. In further slides, factors governing the selection of a particular source of supply are pointed out; and finally, the necessity of water to mankind is herein.
Water and its impurities
The document discusses water impurities and methods for purifying water. It notes that while 71% of Earth is covered in water, only a small portion is potable. Water becomes polluted through waste and spillage. Impurities can be soluble, like salt, or insoluble, like sand. Soluble impurities are removed through evaporation or distillation. Insoluble impurities are removed by sedimentation, decantation, or filtration. Finally, drinking water is purified further through boiling or chlorination after removing other impurities.
causes,impacts,effects,solution of water pollution of Dhanmondi Lake
a questionnaire survey on 81 peoples of different classes.our objective is to know peoples opinion or thoughts on causes,effects,impacts,solution of water pollution of Dhanmondi Lake.
Sources of Water in India
There are plenty of sources of water in India. It is critical to know your source of water supply to choose the best water purification technology for safe drinking water.
Water pollutio nswaranjali
This document discusses water pollution, which is defined as contamination of water bodies like lakes, oceans, and rivers by human activities that result in chemical, physical, or biological changes decreasing water quality and usability. Major pollutants include suspended sediments, water-soluble inorganic substances, oxygen-demanding wastes, and disease-causing agents. Water pollution comes from point sources like factories and sewage systems, and nonpoint sources like acid rain and urban runoff. It affects human health through increased risk of diseases and disrupts ecosystems and food chains. Prevention efforts include proper waste disposal and reduced use of chemicals in agriculture and industry.
Dhanmondi lake water Pollution source investigation Report-2013
This document summarizes the sources of pollution in Dhanmondi Lake in Bangladesh. It identifies two main types of pollution: natural pollution and man-made pollution. Natural pollution sources include surface runoff, decaying animal and plant bodies, and seepage from groundwater. Man-made pollution sources are more extensive and include household and industrial waste, drainage from buildings and roads, solid waste disposal, washing activities, and leachate from human excreta. The document maps the lake and provides diagrams to illustrate different pollution sources affecting water quality in Dhanmondi Lake.
An introduction to Desalination
This document provides an introduction to desalination. It discusses water scarcity issues driven by growing freshwater use and depletion of resources. It explains that seawater is saline due to minerals dissolved from soil and rocks being deposited in oceans over millions of years. The document then describes different desalination technologies including membrane processes like reverse osmosis and thermal processes like multi-stage flash. It also discusses future options for desalination technology that could improve efficiency and reduce costs.
hydrosphere and water pollution
Water pollution occurs when bodies of water become contaminated by harmful substances, making the water unfit for its intended use. There are two main types of pollution: point source pollution which comes directly from an identifiable source, and nonpoint source pollution which comes indirectly from diffuse sources like farm runoff. Common causes of water pollution include sewage, excess nutrients from fertilizers which can cause algal blooms, silt from construction sites, and organic waste which reduces oxygen levels in water. A wide variety of chemicals and pathogens can also pollute water supplies and disrupt ecosystems.
Water
Water covers over 70% of the Earth's surface and is essential for all life. Only 2.5% is freshwater, with the majority found as ice or underground. Water is made of hydrogen and oxygen atoms and can exist as a liquid, solid (ice) or gas (water vapor). It plays a vital role in many areas including agriculture, where integrated management is needed for sustainable development. Water resources come from surface water and groundwater, and pollution can occur from point sources like pipes or non-point sources like agricultural runoff. Conservation efforts aim to reduce usage and allow for other needs.
Availablity Of Water and Sources of fresh water
There are several sources of fresh water on Earth including surface water found in rivers and lakes, underground water that flows below rivers and within aquifers, groundwater stored in soil and rocks, frozen water in glaciers and icebergs, and desalinated water from processes that remove salt from sea water. Surface water comes from precipitation and is lost through discharge into oceans or evaporation. Underground river flows can exceed visible flows, exchanging with groundwater. Groundwater is found below the water table within aquifers. Desalination is an artificial process that converts sea water to fresh water but is currently expensive.
Water management and
This document discusses various aspects of water resources including:
1) Water is essential for life but only 3% of Earth's water is freshwater, with the majority being saltwater in oceans.
2) Freshwater sources include lakes, rivers, streams, groundwater and ice/snow, with only 1% of total water accessible for human and agricultural use.
3) The water cycle describes the continuous movement of water above, on, and below the Earth's surface through different states of matter and is driven by the sun's energy.
River Pollution
The document discusses various sources of river pollution using the Ganges River as an example. It notes that over 1 billion liters of untreated sewage and industrial effluents enter the river daily. Other sources of pollution include partially cremated human corpses, agricultural runoff containing chemicals, and waste from the leather industry. The holy city of Varanasi has water in the Ganges River that is 120 times more contaminated than legally permitted levels. Bathing and other activities in the heavily polluted river put over 10 million people at risk of waterborne diseases every day.
INTRODUCTION TO WATER POLLUTION PARAMETERS -CONCEPT, OBJECTIVES AND NEED OF W...
This document provides an introduction to water pollution parameters. It discusses sources of water pollution including point sources like factories and non-point sources like agricultural fields. It also covers water quality issues in India like seasonal variations and pollution from industrial and domestic activities. The document outlines major categories of water pollution such as infectious agents, organic chemicals, inorganic chemicals, and discusses their sources and harmful effects.
Watersdg
Water pollution occurs through two pathways: non-point and point source pollution. Non-point pollution has indirect sources like agricultural and road runoff that spread toxins widely, making the original polluter difficult to identify. Point source pollution originates from identifiable sources like pipes or drains. Both negatively impact water quality.
[SUMMARY
Sources of water
Surface water, frozen water, and groundwater are the main sources of fresh water. Surface water comes from rivers, lakes, and wetlands and is replenished by precipitation and lost through discharge and evaporation. Frozen water is stored in glaciers and ice caps, though some proposals have explored using icebergs as a water source. Groundwater is stored underground. People use water for household needs like washing, drinking, and bathing, as well as agriculture, industry, and recreation. Conserving water helps protect this resource and some tips include only running dishwashers and washing machines with full loads, turning off taps when brushing teeth, checking for leaks, taking shorter showers, and watering lawns in
Water, basis for life
Explaining Water Pollution trough significant images and explicit sentences.
All images found with Google search.
Water pollution
The document discusses the global and Indian water crisis. It notes that over 1 billion people lack access to safe water and 2 out of 3 people will face water shortages by 2025. In India, groundwater is being depleted, surface water is polluted, and rainfall is being wasted. This puts pressure on India's population and economic growth. Some solutions proposed include investing in desalination plants, implementing water footprinting to improve conservation, harvesting rainwater, and increasing awareness through social media. However, addressing the water crisis requires consideration of cultural, educational, technological and scientific factors.
Water treatments
This document discusses various topics related to water pollution and its treatment. It begins by defining water pollution as the contamination of water bodies by human activities. It then discusses how heavy metals impact aquatic life and the natural water purification process of wetlands, which can remove up to 60% of metals and 90% of sediment from runoff. Wetlands filter water by slowing its flow and allowing particles to settle in sediment layers over time. The document also provides an overview of wastewater treatment, including its four main stages of screening, primary treatment, secondary treatment, and final treatment before water is released. Constructed wetlands can replicate natural wetlands to help purify wastewater in a cheaper and more environmentally friendly manner.
Bato
This document discusses water pollution and its causes, forms, and classification. It introduces water pollution as a problem and its impacts on organisms and drinking water. The main causes of pollution discussed are nutrients from sewage and fertilizers, silt and suspended solids, and organic materials. Additional forms of pollution mentioned are petroleum, radioactive substances, and heat. Water pollution sources are then classified as municipal, industrial, or agricultural. The document also provides information on wastewater treatment processes and the hydrosphere.
Bato
This document discusses water pollution and the hydrosphere. It provides details on the causes of water pollution including excess nutrients, silt, organic materials, and petroleum. It also classifies sources of water pollution as municipal, industrial, and agricultural. The document then describes wastewater treatment processes and defines the hydrosphere as the liquid water component of Earth, including oceans, seas, lakes, and rivers.
The water valence
This document summarizes information about water as a product called "Water Valence". It describes water's physical and chemical properties, its abundance on Earth, and its various states. It also outlines water's many uses to humans and living things as well as its advantages such as keeping the body hydrated and oxygenated. Potential disadvantages mentioned include excess water consumption leading to mineral loss or water poisoning. The document promotes water for refreshment.
Earth Science: Water Resources
This presentation is all about the different types of water resources on the planet Earth and this presentation also shows what kind of cycle that water undergoes to create rain, snow or hail. This presentation is also about how we can find different kinds of things that we normally do that destroys our bodies of water specially climate change and water pollution.
Purification of water
Objective:-
What is purification of water
Definition
Why to purify
Process (Standard level for Class 9 below)
Results if not purified
Branzas Aqua Carpatica The Perfect Bottle (1)
This document discusses various types of water including mineral water, purified water, hard water, soft water, groundwater, freshwater, meltwater, and drinking water. It provides details on the global mineral water market, including statistics on bottled water sales and forecasts for future growth. It also discusses efforts by Coca-Cola and PepsiCo to market fortified carbonated drinks as healthy beverages and the history and branding of the Evian mineral water brand.
Engineering plant facilities 06 mechanics water
This document provides information about water engineering fundamentals. It discusses the states of water, the water cycle, water purification methods like distillation and reverse osmosis. It also covers water treatment processes like coagulation, flocculation, sedimentation and filtration. Clarifier designs and their criteria are outlined. Microorganisms involved in anaerobic digestion and composting are described. Water testing parameters like pH, COD, BOD, SS and FOG are defined. Recommendations for treating wastewater to reduce BOD and FOG levels are provided.
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Sources of Water in India
There are plenty of sources of water in India. It is critical to know your source of water supply to choose the best water purification technology for safe drinking water.
Water pollutio nswaranjali
This document discusses water pollution, which is defined as contamination of water bodies like lakes, oceans, and rivers by human activities that result in chemical, physical, or biological changes decreasing water quality and usability. Major pollutants include suspended sediments, water-soluble inorganic substances, oxygen-demanding wastes, and disease-causing agents. Water pollution comes from point sources like factories and sewage systems, and nonpoint sources like acid rain and urban runoff. It affects human health through increased risk of diseases and disrupts ecosystems and food chains. Prevention efforts include proper waste disposal and reduced use of chemicals in agriculture and industry.
Dhanmondi lake water Pollution source investigation Report-2013
This document summarizes the sources of pollution in Dhanmondi Lake in Bangladesh. It identifies two main types of pollution: natural pollution and man-made pollution. Natural pollution sources include surface runoff, decaying animal and plant bodies, and seepage from groundwater. Man-made pollution sources are more extensive and include household and industrial waste, drainage from buildings and roads, solid waste disposal, washing activities, and leachate from human excreta. The document maps the lake and provides diagrams to illustrate different pollution sources affecting water quality in Dhanmondi Lake.
An introduction to Desalination
This document provides an introduction to desalination. It discusses water scarcity issues driven by growing freshwater use and depletion of resources. It explains that seawater is saline due to minerals dissolved from soil and rocks being deposited in oceans over millions of years. The document then describes different desalination technologies including membrane processes like reverse osmosis and thermal processes like multi-stage flash. It also discusses future options for desalination technology that could improve efficiency and reduce costs.
hydrosphere and water pollution
Water pollution occurs when bodies of water become contaminated by harmful substances, making the water unfit for its intended use. There are two main types of pollution: point source pollution which comes directly from an identifiable source, and nonpoint source pollution which comes indirectly from diffuse sources like farm runoff. Common causes of water pollution include sewage, excess nutrients from fertilizers which can cause algal blooms, silt from construction sites, and organic waste which reduces oxygen levels in water. A wide variety of chemicals and pathogens can also pollute water supplies and disrupt ecosystems.
Water
Water covers over 70% of the Earth's surface and is essential for all life. Only 2.5% is freshwater, with the majority found as ice or underground. Water is made of hydrogen and oxygen atoms and can exist as a liquid, solid (ice) or gas (water vapor). It plays a vital role in many areas including agriculture, where integrated management is needed for sustainable development. Water resources come from surface water and groundwater, and pollution can occur from point sources like pipes or non-point sources like agricultural runoff. Conservation efforts aim to reduce usage and allow for other needs.
Availablity Of Water and Sources of fresh water
There are several sources of fresh water on Earth including surface water found in rivers and lakes, underground water that flows below rivers and within aquifers, groundwater stored in soil and rocks, frozen water in glaciers and icebergs, and desalinated water from processes that remove salt from sea water. Surface water comes from precipitation and is lost through discharge into oceans or evaporation. Underground river flows can exceed visible flows, exchanging with groundwater. Groundwater is found below the water table within aquifers. Desalination is an artificial process that converts sea water to fresh water but is currently expensive.
Water management and
This document discusses various aspects of water resources including:
1) Water is essential for life but only 3% of Earth's water is freshwater, with the majority being saltwater in oceans.
2) Freshwater sources include lakes, rivers, streams, groundwater and ice/snow, with only 1% of total water accessible for human and agricultural use.
3) The water cycle describes the continuous movement of water above, on, and below the Earth's surface through different states of matter and is driven by the sun's energy.
River Pollution
The document discusses various sources of river pollution using the Ganges River as an example. It notes that over 1 billion liters of untreated sewage and industrial effluents enter the river daily. Other sources of pollution include partially cremated human corpses, agricultural runoff containing chemicals, and waste from the leather industry. The holy city of Varanasi has water in the Ganges River that is 120 times more contaminated than legally permitted levels. Bathing and other activities in the heavily polluted river put over 10 million people at risk of waterborne diseases every day.
INTRODUCTION TO WATER POLLUTION PARAMETERS -CONCEPT, OBJECTIVES AND NEED OF W...
This document provides an introduction to water pollution parameters. It discusses sources of water pollution including point sources like factories and non-point sources like agricultural fields. It also covers water quality issues in India like seasonal variations and pollution from industrial and domestic activities. The document outlines major categories of water pollution such as infectious agents, organic chemicals, inorganic chemicals, and discusses their sources and harmful effects.
Watersdg
Water pollution occurs through two pathways: non-point and point source pollution. Non-point pollution has indirect sources like agricultural and road runoff that spread toxins widely, making the original polluter difficult to identify. Point source pollution originates from identifiable sources like pipes or drains. Both negatively impact water quality.
[SUMMARY
Sources of water
Surface water, frozen water, and groundwater are the main sources of fresh water. Surface water comes from rivers, lakes, and wetlands and is replenished by precipitation and lost through discharge and evaporation. Frozen water is stored in glaciers and ice caps, though some proposals have explored using icebergs as a water source. Groundwater is stored underground. People use water for household needs like washing, drinking, and bathing, as well as agriculture, industry, and recreation. Conserving water helps protect this resource and some tips include only running dishwashers and washing machines with full loads, turning off taps when brushing teeth, checking for leaks, taking shorter showers, and watering lawns in
Water, basis for life
Explaining Water Pollution trough significant images and explicit sentences.
All images found with Google search.
Water pollution
The document discusses the global and Indian water crisis. It notes that over 1 billion people lack access to safe water and 2 out of 3 people will face water shortages by 2025. In India, groundwater is being depleted, surface water is polluted, and rainfall is being wasted. This puts pressure on India's population and economic growth. Some solutions proposed include investing in desalination plants, implementing water footprinting to improve conservation, harvesting rainwater, and increasing awareness through social media. However, addressing the water crisis requires consideration of cultural, educational, technological and scientific factors.
Water treatments
This document discusses various topics related to water pollution and its treatment. It begins by defining water pollution as the contamination of water bodies by human activities. It then discusses how heavy metals impact aquatic life and the natural water purification process of wetlands, which can remove up to 60% of metals and 90% of sediment from runoff. Wetlands filter water by slowing its flow and allowing particles to settle in sediment layers over time. The document also provides an overview of wastewater treatment, including its four main stages of screening, primary treatment, secondary treatment, and final treatment before water is released. Constructed wetlands can replicate natural wetlands to help purify wastewater in a cheaper and more environmentally friendly manner.
Bato
This document discusses water pollution and its causes, forms, and classification. It introduces water pollution as a problem and its impacts on organisms and drinking water. The main causes of pollution discussed are nutrients from sewage and fertilizers, silt and suspended solids, and organic materials. Additional forms of pollution mentioned are petroleum, radioactive substances, and heat. Water pollution sources are then classified as municipal, industrial, or agricultural. The document also provides information on wastewater treatment processes and the hydrosphere.
Bato
This document discusses water pollution and the hydrosphere. It provides details on the causes of water pollution including excess nutrients, silt, organic materials, and petroleum. It also classifies sources of water pollution as municipal, industrial, and agricultural. The document then describes wastewater treatment processes and defines the hydrosphere as the liquid water component of Earth, including oceans, seas, lakes, and rivers.
The water valence
This document summarizes information about water as a product called "Water Valence". It describes water's physical and chemical properties, its abundance on Earth, and its various states. It also outlines water's many uses to humans and living things as well as its advantages such as keeping the body hydrated and oxygenated. Potential disadvantages mentioned include excess water consumption leading to mineral loss or water poisoning. The document promotes water for refreshment.
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Dhanmondi lake water Pollution source investigation Report-2013
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Earth Science: Water Resources
This presentation is all about the different types of water resources on the planet Earth and this presentation also shows what kind of cycle that water undergoes to create rain, snow or hail. This presentation is also about how we can find different kinds of things that we normally do that destroys our bodies of water specially climate change and water pollution.
Purification of water
Objective:-
What is purification of water
Definition
Why to purify
Process (Standard level for Class 9 below)
Results if not purified
Branzas Aqua Carpatica The Perfect Bottle (1)
This document discusses various types of water including mineral water, purified water, hard water, soft water, groundwater, freshwater, meltwater, and drinking water. It provides details on the global mineral water market, including statistics on bottled water sales and forecasts for future growth. It also discusses efforts by Coca-Cola and PepsiCo to market fortified carbonated drinks as healthy beverages and the history and branding of the Evian mineral water brand.
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This document provides information about water engineering fundamentals. It discusses the states of water, the water cycle, water purification methods like distillation and reverse osmosis. It also covers water treatment processes like coagulation, flocculation, sedimentation and filtration. Clarifier designs and their criteria are outlined. Microorganisms involved in anaerobic digestion and composting are described. Water testing parameters like pH, COD, BOD, SS and FOG are defined. Recommendations for treating wastewater to reduce BOD and FOG levels are provided.
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The document discusses the water cycle and various bodies of water. It describes the water cycle as the continuous movement of water between the earth and atmosphere, involving evaporation, transpiration, precipitation, and collection of water on land or in bodies of water. It also discusses the physical and chemical properties of water, including its chemical makeup of H2O and categories of saline water. Finally, it identifies and describes different types of flowing bodies of water like rivers, creeks, and brooks, as well as non-flowing bodies of water like oceans, lakes, ponds, reservoirs, sloughs, marshes and estuaries.
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Chapter 14 – water resources
The document discusses water resources and water treatment. It explains that most of Earth's water is ocean water, while freshwater comes from surface water, groundwater, and the water cycle. It then describes how surface water forms rivers and lakes, groundwater forms aquifers, and how water is used residentially, industrially, and agriculturally. Issues like overdraft and habitat degradation are discussed, along with water treatment processes like desalination, purification through screening, sedimentation, filtration, aeration, and sterilization.
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The document discusses the hydrologic cycle, which involves the continuous circulation of water on Earth through different states and processes. It explains that evaporation occurs when water molecules gain energy and change from liquid to gas, condensation is when water vapor condenses to form clouds, and precipitation delivers water to the Earth's surface. The hydrologic cycle begins with evaporation from the ocean, water being transported through the atmosphere, precipitation, and water running off or seeping into the ground to eventually return to the oceans.
Hydrologic cycle
The hydrologic cycle describes the continuous movement of water on, above, and below the surface of the Earth. Water is evaporated from bodies of water by the sun's energy, rises into the atmosphere as water vapor, condenses to form clouds, and falls back to the Earth's surface as precipitation onto land and oceans, where some is absorbed by plants and soil, some runs off into streams, rivers, lakes, and oceans, and some infiltrates and replenishes groundwater stores. This constant movement of water driven by energy from the sun is known as the water or hydrologic cycle and is essential to supporting life on Earth.
The Water Cycle
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Water Quality and Contamina on 22 Usable wate.docx
Water Quality and Contamina on
22
Usable water
Ground water
Surface water
Ground water contaminates
Water treatment
Drinking water quality
Figure 1: At any given moment, 97% of the planet’s water is in oceans. Only a small fraction of
the remaining freshwater is usable by humans, underscoring the importance of treating our wa-
ter supply with care.
It is no secret that water is one of the most valuable resources on Earth. Every plant and animal requires wa-
ter to survive, not only for drinking, but also for food production, shelter creation, and many other necessities.
Water has also played a major role in transforming the earth’s surface into the varied topography we see to-
day.
While more than 70% of our planet is covered in water, only a small percentage of this water is usable fresh-
water. The other 99% of water is composed primarily of salt water, with a small percentage being composed
23
of glaciers. Due to the high costs involved in transforming salt water into freshwater, the earth’s population
survives off the less than 1% of freshwater available. Humans obtain freshwater from either surface water or
groundwater.
Surface water is the water that collects on the ground as a result of precipitation. The water that does not
evaporate back into the atmosphere or infiltrate into the ground is typically collected in rivers, lakes, reser-
voirs, and other bodies of water, making it easily accessible.
Groundwater, on the other hand, is located underneath the ground. This water is stored in pores, fractures,
and other spaces within the soil and rock underneath the surface. Precipitation, along with snowmelt, infil-
trates through the ground and accumulates in available underground spaces.
Aquifers are areas in which water collects in sand, gravel, or permeable rock from which it can be extracted
for usable freshwater. The depth of aquifers varies from less than 50 feet to over 1,500 feet below the sur-
face. The water within an aquifer typically does not flow through, as it would through a river or stream, but in-
stead soaks into the underground material, similar to a sponge. As aquifers are depleted by human use, they
are also recharged from precipitation seeping into the ground and restoring the water level. However, many
times the recharge of the aquifers does not equal the amount of water that has been extracted. If that cycle
continues, the aquifer will eventually dry up and will no longer be a viable source of groundwater.
Evapora on
Cloud forma on
Precipita on
Groundwater
Evapora on
Transpira on
Precipita on
Precipita on
Figure 2: Water is a renewable source, purified and
delivered across the planet by the hydrological cycle.
24
While the water that precipitates in the form of rain is relatively pure, it does not take long for it to pick up con-
taminants. There are natural, animal, and human-made sources of water pollutants. They c.
Water Cycle
The document discusses the hydrological cycle, which is the continuous movement of water on, above, and below the Earth's surface, including the processes of evaporation, condensation, precipitation, and runoff. Water is cycled through the atmosphere, land, and oceans via these processes and is driven by energy from the sun. The water cycle involves the storage and transfer of water between different reservoirs including the biosphere, atmosphere, lithosphere, and hydrosphere.
The Flow of Fresh Water
This document provides an overview of key concepts about rivers and water systems from an Earth Science textbook. It begins by describing how moving water causes erosion and shapes the landscape. It explains the water cycle and defines important river features like tributaries, watersheds, and gradients. Later sections discuss how rivers deposit sediment to form features like deltas and floodplains. It also explains groundwater systems, describing aquifers, springs, wells, and how erosion can form caves and sinkholes. The document concludes by discussing water pollution, water treatment, and conservation strategies.
Power point presentation
The document discusses the Earth's hydrosphere and water pollution. It begins by explaining theories about the formation of Earth's hydrosphere and ice ages. It then discusses the water cycle and components that make up the hydrosphere. The document also covers different types of water pollution including groundwater pollution and concludes by emphasizing the seriousness of water pollution issues.
El agua 3
The document summarizes information about the water cycle and water resources in different countries. It discusses reservoirs that supply water to Seville, the water treatment process, water consumption by the author's class, and whether water is a limited resource. It also provides data on the available water per person in several countries, ranging from 20 liters/person/day in Calcutta to 523 liters/person/day in California. Finally, it describes the key processes in the water cycle including evaporation, precipitation, infiltration, subsurface flow, and condensation.
Bodies of water
The water cycle describes the continuous movement of water on, above, and below the surface of the Earth. Water can change between liquid, solid, and gas states in this cycle. In its purest form, water is a chemical compound made up of two hydrogen atoms and one oxygen atom. Bodies of flowing water include rivers, creeks, brooks, and canals, which vary in size and flow. Bodies of non-flowing water include oceans, lakes, ponds, reservoirs, sloughs, marshes, and estuaries, and also vary in size and salinity.
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About water
- 1. THE WATER
- 2. THE DEFINITION Water is the most widespread chemical compound which is necessary for all known forms in our planet. The molecule of water is consists of two atoms of hydrogen and one atom of oxygen , the chemical substance of water's molecule is proved by the french chemist Antoine L a voisier .
- 3. PHYSICAL CONDITIONS OF WATER I n nature the water exists in three states The solid state (below 0 C.) The liquid state (between 0-100 C.) And the last one, the gaseous state (about 100 C.)
- 4. THE NAME The water in Greek “nero” got its name from the byzantine phrase “νεαρό ύδωρ” “nearo ydor”(= young water) which means flowing water. This phrase comes from the ancient greek phrase “ νήρον ύδωρ” “nyron ydor”
- 7. The water of the earth can change states , from solid, such as ice To liquid, such as the water on lakes and rivers And to gas, such as the water steams.
- 9. THE WATER CYCLE NEVER STOPS.. That’s why everybody should take care of the environment and keep it clean
- 19. Domestic wastewater is collected and transported via a network of pipes to a municipal treatment plant, in the island of Psitalia, where a two stage treatment take place.