7Where is Water Found on Earth? Where It’s FoundOceansLakesRiversPondsStreamsAtmosphereTissues and organs of living thingsGroundwaterSurface WaterStates of MatterLiquidFrozenGaseousWater Vapor
8Water regulates the earth’s temperature/climate Water Facts70% of the Earth is covered with water.The same amount of water that was here when Earth formed is still here. You might drink molecules that Neanderthals drank…Water is the only substance that is found naturally on earth in three forms: solid, liquid and gasMost of the Earth’s water is permanently frozen or salty.IMPORTANT!Water regulates the earth’s temperature/climate
997% covers the oceans % is frozen Of all the water on the Earth only 1% is available for us to drink
10Distribution of Water on Earth Ice - 76%Water Vapor – 0.037%Lakes/Rivers – 0.34%Deep groundwater – 11%Shallow groundwater – 12%Ice - 23mL = 22.8% W V - 01mL L R - .1mL D gw – 3.3mL S gw – 3.6mL
11Most (2%) of the freshwater on the Earth is locked up in ice Most (2%) of the freshwater on the Earth is locked up in ice. It’s found in Polar Ice Caps
12Of the 3% offreshwateron the Earth,only 1% isavailable forhuman’s todrink
14Where is Earth’s FRESHWATER? Freshwater at Earth’s surface is a small fraction of all the water on the planet.If 1 L of water represents all of Earth’s water, a drop represents all the water in lakes and rivers.
20Surface Water - Reservoirs Lake-like bodies ofwater created by dammingstreams or rivers, usually tosupply water and/orhydroelectric power to anearby area. Examples:Falls of the Neuse - RaleighLittle River Reservoir - Durham
21Aquifer (located underground) A rock layer that stores water and allows water to flow through it.
22Water that seeps into the soil is groundwater Water that seeps into the soil is groundwaterIt travels through spaces between the rocksThe type of rock determines how much water is stored and how fast it moves through the rocksAquifers –store this freshwater undergroundCounties obtain drinking water and water for irrigation by tapping into aquifers.
27Wetlands Act Like Sponges Wetlands act as sponges in the landscape, collecting and holding rainwater to prevent flooding.Since they soak up pollutants and sediments they can improve the quality of the water that will eventually become drinking water for communities.
28Wetland Facts 50% of the Earth’s “wetlands” have been lost since 1900 Wetlands clean the rivers and lakes by removing pollution before the water enters the oceanThey help stop floods by holding water from rain and melting snow. They act as a sponge.They are breeding and nesting places for numerous fish, birds; ducks, shellfish and other small animalsProvide home for many endangered speciesEvery time a wetland is drained at least 500 hundred animals die because of lost of habitat and food.Many laws have been passed to save our wetlands
31Watershed - Drainage Basin River Basin - a drainage area of a river Watershed – an area of land where rain collects and drains into a single place; lake, ocean, etc…River Basins – large ones are made up of many watershedsMain function: to move water from a higher to lower elevations – mountains to oceansNorth Carolina has 17 river basins
37What Do You Think? Why do we need to protect the “Hydrosphere”? Why do we need to practice conservation of our waters?What is the
38Environmental Protection Agency Responsible for protecting and monitoring theEarth’s natural resources:Water Soil Air Plants AnimalsMinerals Rocks
39WATER, WATER Everywhere But Not a Drop to Drink!
40Notice how of the world's total water supply of about 332 Notice how of the world's total water supply of about million cubic miles of water, over 96 percent is saline. And, of the total freshwater, over 68 percent is locked up in ice and glaciers. Another 30 percent of freshwater is in the ground. Fresh surface-water sources, such as rivers and lakes, only constitute about 22,300 cubic miles (93,100 cubic kilometers), which is about percent of total water. Yet, rivers and lakes are the sources of most of the water people use everyday.
41SalinityA measure of the amount of dissolved salts in a given amount of liquid (ocean water)
42Water ConservationAmericans use five times as much water as Europeans use.Humans use about 50 gallons of water dailyToday, more than 400 million people live in regions with severe water shortages
443. Which process is used in sewage treatment to kill infectious bacteria? a) sedimentation c) filtrationb) chlorination d) flotation
45Water Facts and HealthA person can live about a month without food, but only a week without water.A quarter of the world’s population is without safe drinking water.Water removes waste from the human body.More than 2 billion people on earth do not have a safe supply of water.Humans cannot drink salt water.A person must consume 2 liters of water daily to live healthily.You use an average of 168 gallons of water a day.. Water regulates the temperature of the human body
46Water is a Raw MaterialIt takes 450 L (120 g) of water to produce one egg.To process one chicken we need 44 L (11.6 g) of water.To process one can of fruit or vegetables we need 35 L (9.3 g) of water.About 25,700 L (6,800 g) of water is required to grow a day’s food for a family of four.It takes 7,000 L (1,850 g) of water to refine one barrel of crude oil.To manufacture new cars 148,000 L (39,000 g) of water are used per car.It takes 120 gallons of water to produce one egg.
47Questions 1 1. Where is most freshwater located on Earth? polar ice capsgroundwaterlakesRivers and streams
48Answer 1. Where is most freshwater located on Earth? polar ice caps groundwaterlakesRivers and streams
49Question 2What are two sources of freshwater used by cities for drinking water?a. Glaciers and lakesb. Aquifers and reservoirsc. Wetlands and polar iced. Rivers and oceans
50AnswerWhat are two sources of freshwater used by cities for drinking water?a. Glaciers and lakesb. Aquifers and reservoirsc. Wetlands and polar iced. Rivers and oceans
51Question 3An area of land where precipitation moves from higher to lower elevations and then collects and drains into a stream or river is atributaryaquiferc. watershedd. wetland
52AnswerAn area of land where precipitation moves from higher to lower elevations and then collects and drains into a stream or river is atributaryaquiferc. watershedd. wetland
53Questions 4Where does North Carolina obtain most of its freshwater for drinking?a. Groundwaterb. Reservoirsc. Aquifersd. Rivers and streams
54AnswerWhere does North Carolina obtain most of its freshwater for drinking?a. Groundwaterb. Reservoirsc. Aquifersd. Rivers and streams
55Question 5 Why is a wetland like a sponge? It soaks up nutrients and stores them for animals to eat during the winterIt soaks up small animals and provides food for larger animalsc. It soaks up water and stores it for use during a drought.It soaks up water and cleans it so freshwater might not become polluted
56Answer Why is a wetland like a sponge? It soaks up nutrients and stores them for animals to eat during the winterIt soaks up small animals and provides food for larger animalsc. It soaks up water and stores it for use during a drought.It soaks up water and cleans it so freshwater might not become polluted
57Question 6 Which describes the hydrosphere Most of it contains salt It is made of only freshwaterAll of it is located above groundIt is formed by a climate change
58Answer Which describes the hydrosphere Most of it contains salt It is made of only freshwaterAll of it is located above groundIt is formed by a climate change