Download - Unit 6 Hidrosphere 1 ESO
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UNIT 6: THE LIQUID PART UNIT 6: THE LIQUID PART OF THE EARTHOF THE EARTH
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A BLUE PLANET
The medium temperatureof the earth is 15ºC, that is whythere is LIQUID WATER on earth
MHB
The HIDROSPHERE is all the waterin the earth.
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WATER CAN BE IN DIFFERENT STATES!!!
SOLID
LIQUID
GASEOUS
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RIVERMOUNTAIN
SPRING GLACIER
SNOW-COVERED MOUNTAIN OCEAN / SEA LAKE
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IMPORTANCIA DEL AGUA SERES VIVOS
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IMPORTANCIA DEL AGUA SERES VIVOS
El agua se enfría y calienta más despacio de la tierra. Por eso hace que el clima de las costas sea más suave que el de interior.
Sudando los seres vivos se refrescan cuando se evapora el sudor. Así muchos seres vivos regulan su temperatura corporal.
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IMPORTANCIA DEL AGUA SERES VIVOS
Alcanza la densidad máxima a 4ºC, por eso existe vida en aguas d elos polos en invierno.Piensa y deduce pg. 103
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DISTRIBUTION OF WATER IN EARTH
MHB
DISTRIBUTION OF WATER
OCEANS, salty water 97%
CONTINENTALSweet water 3%
Ice and polar ice
Underground water
Sweet superficial water (0,03%)
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UNDERGROUND WATER
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RIVERS
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LAKES
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OCEANS AND SEAS
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WATER USESPRIMARIOS Domésticos
Retrete: 32% Baño: 30% Pérdidas: 13% Lavaplatos: 10% Lavadora: 9% Jardines:3% Bebida:3%
Industrial
Agricultura yganadería
SECUNDARIOS Energético
NavegaciónAmbientalRecreativo
Todas las actividades humanas pueden contaminar el agua.
Consumen el agua usada
No consumen el agua usada
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ANDALUSIAN DAMS
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WATER POLLUTION natural pollution: - Volcanoes eruptions
- Floods - Collapse human pollution:
Domestic pollution: black or fecal water.BacteriaViruses
Organic matterDetergents
Agricultural: fertilizers and plaguicides.
Industrial: Germs and plenty of sunbstancies.
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POLLUTION OF UNDERGROUND WATER
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POLLUTION IN RIVERS
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POLLUTION IN OCEANS, BLACK TIDES
El Prestige era un buque petrolero, que el 19 de noviembre de 2002 se hundió frente a las costas de Galicia (España), ocasionando un vertido de crudo que provocó uno de los mayores desastres ecológicos de la historia del país.
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POLLUTION IN OCEANS
Alcanza dos veces y media la superficie de la península ibérica.Compuesta de desechos plásticos.El plástico no desaparece nunca, se desintegra en pequeños trozos con la luz del sol.
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LA CALIDAD DEL AGUA
DEPURACIÓN: Consiste en tratar el agua contaminada que se ha usado (en casa, la industria, etc.) antes de echarla a los ríos o el mar. Para eso en todas las ciudades hay una EDAR (Estación de Depuración Aguas Residuales)
POTABILIZACIÓN: Se trata el aguaantes de utilizarla para consumo humano.
Hay que eliminar: -Sales disueltas -Sólidos en suspensión -Gérmenes patógenos
MHB
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EDAR
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ACTIVIDAD: ORDENAR LAS FASES EN LA DEPURACIÓN DE AGUAS, ALGUNAS SE REPITEN
CLORACIÓN.FILTRADO.FLOCULACIÓN.
SEDIMENTACIÓN.USO DEL AGUA DEPURADA.
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ACTIVIDAD: ORDENAR LAS FASES EN LA POTABILIZACIÓN DE AGUAS, ALGUNAS SE REPITEN
AIREACIÓN.CLORACIÓN.FILTRADO.FILTROS BIOLÓGICOS.
CRIBADO.SEDIMENTACIÓN.AIREACIÓN.SUMINISTRO.
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