2How our planet quenches its thirst. The Water CycleHow our planet quenches its thirst.
3PrecipitationWater Molecules travel between the atmosphere and earths surface.A.K.A. RAIN,SNOW,SLEET,HAIL…
4EvaporationWater evaporates and leaves behind salts and other impurities on the surface.Transpiration is the evaporation of water from parts of plants, especially leaves, also stems, flowers and roots.
5CondensationWater vapor, which is a gas, rises into the air. As it cools and condenses into drops of liquid water it forms clouds.
6The Four Oceans Rachel Brown Atlantic 81,630,000 square km Pacific165,640,000 square kmThe deepest point is the Challenger deep, which is 11,033 m below sea levelThe currents move clockwise in the north of the equator and counterclockwise in the south of the equator.Atlantic81,630,000 square kmIt covers 22% of the Earth’s surfaceLocated between the continents of North and South America, Europe, Africa and AntarcticaOften referred to as “The Pond”Rachel Brown
7Indian and Arctic Indian- 73,420,000 square km Average depth-3,890m Carries a heavy traffic of petroleumArctic- 14,350,000 square kmSmallest of all the oceansMuch of the surface is covered by floating iceRachel Brown
8Salinity Salinity is the concentration of all the dissolved salts. The average salinity of ocean water is approximately 3.5 percent.Rachel Brown
9There are 3 main layers of the ocean! 1. Surface2. Thermocline3. Deep zone
10Surface Zone;* The surface layer… is the warm, top layer. Sunlight heats the top 100 m of the surface zone.* Surface currents mix warm water with the cooler water from below.
11Theremocline; Deep Zone; * Temperature in zone drops faster with increased depth than it does anywhere else.Deep Zone;* extends from base of middle layer (thermocline) to the bottom of the ocean* Temperature averages to about 2 degrees celcius.
12Donovan WaryoldHydrosphereThe ocean makes the temperature of the atmosphere change much slower that it normally would.If the ocean didn’t regulate atmospheric and surface temperatures it would be to extreme for life to exist on earth.
13local temperatures all around the world are regulated by the Donovan Waryoldlocal temperatures allaround the worldare regulated by theworld ocean.
14Surface CurrentsSurface currents occur when water at the ocean’s surface is moved by winds that blow in certain patterns because of the Earth’s spin and Coriolis effect.The Coriolis effect makes moving objects appear to curve toward the right in the N. hemisphere and toward the left in S. hemisphere.Modifie from MapQuest.comBlacie Hunt
15Surface CurrentsSurface currents are primarily driven by the wind. Currents flowing toward the equator are generally cool, and currents flowing away are warm.Temperature helps us determine the speed and direction of surface currents and about heat stored in ocean.Blacie Hunt
16Surface CurrentsOceanographers often divide the pacific and south pacific based on direction of surface current flow in each half of the pacific. Surface currents in the Pacific move in a clockwise direction north of the equator. Whereas surface currents flow in a counter clockwise direction south of the equator.The Atlantic ocean is also divided in to halves, north half and south half based on directions of surface current flow.Blacie Hunt
17Formation of Deep Ocean Currents Deep ocean currents form when the cold water from the north and south poles sinks below warmer, less dense ocean water and flows toward the equator.This picture represents the oceans different temperatures.This picture was found at:Underwater currents are sixteen times stronger than all of the earths rivers combinedSierra Lewis
18Antarctica’s coast is where the worlds densest and coldest water can be found. Sierra Lewis
19How much of the world’s water is fresh? About 70% of the Earth’s surface is made of waterOnly 3% is fresh waterJordan Brown
20Ice caps and glaciers- Only one percent of the earth’s fresh water is drinkable- The biggest amount of drinkable water is stored in ice caps or glaciersJordan Brown
21River Systems By: Matt Murphy Rivers systems consist of rivers and streams that drain a river basin. They also contain all the landscape drained by a river.By: Matt Murphy
22TributariesTributaries are small creeks or rivers that flow into larger bodies of water. Tributaries do not empty into the sea but rather rivers.By: Matt Murphy
24Hydrosphere: Groundwater Andrew Peters-GreerHydrosphere: GroundwaterGroundwater – The water beneath the earth’s surface.Groundwater accounts for a little under one 1% of all the water on earth.
25How is ground water important? Groundwater supplies water for many agricultural and industrial uses40% of people living in the United States use Ground water for drinking, cooking, cleaning, etc.
26HydrosphereAquifer – A rock layer that stores and allows the flow of ground waterMuch Of the United States is underlain by aquifersRobbie Alexander
27Recharge ZoneA recharge zone is the land where the water enters an aquiferRecharge is the process of water refreshing an aquiferThis happens when rain filters through the rock or soilRobbie Alexander