the hydrospher eb
TRANSCRIPT
THE HYDROSPHERE
The Hydrosphere includes all the water on Earth.
Water covers 71% of the Earth's surface. Living things contain water in their bodies
in different proportions:
Humans: 70%. Jellyfish: 99,5% Cat: 60% Orange: 85%
Do you know……..?Where can we find water in our planet?How is sea water different to water in
rivers?What is the water cycle?Why is important not to waste water?Some easy ways to save water?
WHERE IS WATER ON THE EARTH?
WHERE IS THERE WATER ON EARTH?97% of water on Earth is salt water. It is
found in the oceans.3% of water on Earth is fresh water. It is
found in:Ice and snow from glaciars.Below the surface: groundwater.In the atmosphere.On the surface of our planet.In living beings.
LAS PROPIEDADES DEL AGUALa molécula de agua está formada por tres
átomos: dos de hidrógeno y uno de oxígeno.El agua es incolora, inodora e insípida.El agua es un gran solvente (muchas
sustancias se disuelven en ella).El agua existe en tres estados físicos: sólido,
líquido y gaseoso.La densidad del agua es máxima a 4 ºC.
• El agua se congela a 0ºC, y se evapora a 100 ºC.
• El agua modera los cambios de temperatura.
• El agua se adhiere a las superficies (adhesión).
• Las moléculas de agua se unen con fuerza entre ellas (cohesión).
THE ROLE OF WATER IN LIVING THINGS
Water is the main component in living things.
Many living things live in water.Chemical reactions in our body
occur in water.Water maintains our body
temperature constant.
NATURAL DISASTERS
FLOODS
DROUGHTS
WATER CONSUMPTION
WATER POLLUTION
THE WATER CYCLE
http://www.iesmariazambrano.org/Departamentos/flash-educativos/ciclo_agua.swf
Is the movement of water around, over and through the Earth. It consist on these processes:
Evaporation.Evapotranspiration.Condensation.Precipitation.Surface Runoff.Infiltration
Evaporation: liquid water changes to gas. Water passes from the hydrosphere to the atmosphere.
Evapotranspiration: water evaporates from the leaves of plants.
Condensation: Water vapour changes to liquid, forming clouds.
Precipitation: water in the clouds falls to the ground.
Surface Runoff: surface water moves across the land, forming rivers and streams.
Infiltration: surface water filters into the ground, using the pores in the rocks.
El Modelado del Relieve por el Aguahttp://www.edistribucion.es/anayaeducacion/8420534/U09/U09_01_EPI_04/video_modelado_paisaje.html
Las Aguas Contaminadas
http://www.edistribucion.es/anayaeducacion/8420534/U09/U09_01_EPI_05/video_9_5_nb/index.html