Presentation Transcript
THE EARTH’S WATER: THE EARTH’S WATER 06 GENERAL and HONORS SCIENCE
MRS. N. NEAGLE
THOMPSON MIDDLE SCHOOL
HOW EARTH’S WATER MOVES: HOW EARTH’S WATER MOVES POWERED BY THE SUN
EVAPORATION
RISING WATER VAPOR
CLOUDS CREATED
PRECIPITATION OCCURS
WHAT HAPPENS AFTER THE PRECIPITATION FALLS? : WHAT HAPPENS AFTER THE PRECIPITATION FALLS? THE PRECIPITATION BECOMES ONE OF TWO TYPES OF WATER:
GROUNDWATER
SURFACE WATER
SURFACE WATER WILL EITHER:
EVAPORATE
BECOME RUNOFF
WATERSHEDS: WATERSHEDS RUNOFF FROM A LAND AREA FLOWS TOWARDS A RIVER
EXAMPLE: BATHTUB
CAN BE LARGE OR SMALL THE MIDDLE JAMES-WILLIS WATERSHED
WHY DOESN’T ALL PRECIPITATION SINK? : WHY DOESN’T ALL PRECIPITATION SINK? THERE ARE THREE MAIN REASONS THAT ALL PRECIPITATION DOESN’T SINK INTO THE GROUND
TOO SATURATED
SLOPING LAND
TOO LITTLE VEGITATION
SALT WATER VS FRESHWATER : SALT WATER VS FRESHWATER WHAT DO YOU THINK THE PERCENTAGE OF THE EARTH’S WATER IS FRESH WATER AND NOT FROZEN?
TRY 3% !!!
THE SURFACE WATER WILL EITHER EVAPORATE OR EVENTUALLY REACH THE OCEAN
SALT WATER VS FRESHWATER : SALT WATER VS FRESHWATER OCEAN WATER EVAPORATES JUST LIKE WATER ON LAND DOES
SALT IS LEFT ON LAND
SALT WATER CANNOT BE USED FOR FARMS & INDUSTRY DUE TO IT’S SALINITY
CAUSES DAMAGE
FRESH WATER ON EARTH: FRESH WATER ON EARTH
GROUNDWATER
AQUIFERS
SPRINGS
RIVERS
GEYSERS
CAVES
LAKES
OCEANS
Types of Water on Earth: Types of Water on Earth
GROUNDWATER: GROUNDWATER STARTS AS PRECIPITATION AND RUNOFF
SINKS INTO THE SOIL BECAUSE IT’S POROUS
SANDY SOIL OR SOIL WITH A LOT OF DECAYED PLANT MATERIAL IS VERY POROUS
THE WATER TABLE: THE WATER TABLE AS GROUND WATER CONTINUES DOWN IT WILL COME TO A SOLID ROCK LAYER
GROUNDWATER COLLECTS ON THE TOP OF THE ROCK FILLING THE SPACES ABOVE IT
WATER TABLE: WATER TABLE U.S. GETS DRINKING WATER FROM THE WATER TABLE
WHAT DO WE USE TO GET THIS GROUNDWATER PUMPED TO OUR FAUCET? WHAT WOULD HAPPEN TO THE WATER TABLE IF A HURRICANE WERE TO HIT RICHMOND?
WHAT WOULD HAPPEN IF TO THE WATER TABLE IF RICHMOND DID NOT HAVE ANY RAIN FOR A YEAR?
BRINGING GROUNDWATER ABOVE GROUND : BRINGING GROUNDWATER ABOVE GROUND
IN SOME PLACES GROUNDWATER CAN SINK INTO THE PORES IN THE ROCK LAYER
CREATES AN AQUIFER
WATER FROM AN AQUIFER CAN COME TO THE SURFACE
SPRING
GEYSER
SPRINGS: SPRINGS GROUNDWATER CAN FLOW OUT OF THE GROUND AS A NATURAL FRESH WATER SOURCE
WHERE AN AQUIFER COMES TO THE SUFACE
GEYSERS: GEYSERS SPECIAL TYPE OF SPRING
OCCUR WHERE GROUNDWATER LIES CLOSE TO HOT ROCK OR MAGMA
STEAM AND WATER ERUPT
FOUND IN WYOMING, NEW ZEALAND, AND ICELAND
WHAT IS THE NAME OF THE FAMOUS GEYSER IN THE UNITED STATES?
CAVES: CAVES GROUNDWATER SEEPING THROUGH CRACKS IN LIMESTONE UNDERGROUND CAN DISSOLVE
THE GROUNDWATER MIXES WITH THE ATMOSPHERE TURNING THE WATER INTO A WEAK ACID
LARGE AMOUNTS ARE DISSOLVED OVER THE YEARS AND CARRIED AWAY
CAVES CAN COLLAPSE
CAN BECOME PONDS
RIVERS: RIVERS MAJORITY OF THE FRESH WATER ABOVE GROUND
ALWAYS FLOW DOWNHILL
RIVERS CAN JOIN TOGETHER TO MAKE BIGGER RIVERS
LAND CAN BE DRAINED BY A RIVER
RIDGES CAN SEPARATE THE LAND THAT IS DRAINED BY A RIVER
HOW RIVERS FORM: HOW RIVERS FORM BEGIN AS RUNOFF
PATHS WIDEN UNTIL THEY BECOME STREAMS
FLOW DOWNHILL UNTIL STREAMS CONNECT TO BECOME LARGER RIVERS
LAKES: LAKES NOT ALL SURFACE WATER FLOWS ALONG PATHS
SOME COLLECTS ALONG DEPRESSIONS AND LOW AREAS OF LAND
AS IT FILLS THE DEPRESSIONS LAKES ARE FORMED
LAKES AND RESERVOIRS: LAKES AND RESERVOIRS LAKE SUPERIOR IS THE LARGEST FRESHWATER LAKE IN THE WORLD!!!
LAKES CAN BE USED FOR STORAGE OF FRESH WATER
RESERVOIRS ARE MADE BY CONSTRUCTING DAMNS ALONG RIVERS
PURPOSES OF A RESERVOIR: PURPOSES OF A RESERVOIR STORE WATER
CONTROL FLOODING
HYDROELECTRIC POWER
OCEANS: OCEANS WHAT PERCENTAGE OF THE EARTH’S WATER IS OCEAN WATER?
OCEAN WATER IS SALT WATER
SALINITY CAN VARY
OCEAN WATER IS WARMEST AT THE SURFACE WHERE THE SUN HEATS IT
TEMPERATURE DROPS THE DEEPER YOU GO
THERMOCLINE IS WHERE THERE IS A HUGE DROP IN TEMPERATURE
OCEAN CURRENTS: OCEAN CURRENTS THERE ARE WAVES IN THE OCEAN, ALTHOUGH THEY DO NOT MOVE THE WATER
THAT IS THE JOB OF AN OCEAN CURRENT
CLIMATE CONTROL: CLIMATE CONTROL HOW IS IT OCEANS AND OTHER LARGE BODIES OF WATER SEEM TO MODERATE THE CLIMATE ?
WHY IS IT AIR TEMPERATURE IS WARMER IN VA BEACH THAN RICHMOND?