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THE THE HYDROSPHERE HYDROSPHERE
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THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

Jan 18, 2016

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Page 1: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

THETHE HYDROSPHEREHYDROSPHERE

Page 2: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

Do you konw……..?Do you konw……..?

• Where can we find water in our Where can we find water in our planet?planet?

• How is sea water different to water in How is sea water different to water in rivers?rivers?

• What is the water cycle?What is the water cycle?

• Why is important not to waste water?Why is important not to waste water?

• Some easy ways to save water?Some easy ways to save water?

Page 3: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

WHERE IS WATER ON THE WHERE IS WATER ON THE EARTH?EARTH?

Page 4: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.
Page 5: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

WHERE IS THERE WATER ON WHERE IS THERE WATER ON EARTH?EARTH?

• 97% of water on Earth is salt water. It is 97% of water on Earth is salt water. It is found in the oceans.found in the oceans.

• 3% of water on Earth is fresh water. It is 3% of water on Earth is fresh water. It is found in:found in:– Ice and snow from glaciars.Ice and snow from glaciars.– Below the surface: groundwater.Below the surface: groundwater.– In the atmosphere.In the atmosphere.– On the surface.On the surface.– In living beings.In living beings.

Page 6: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

PROPERTIES OF WATERPROPERTIES OF WATER

• The water molecule is made up of three atoms: HThe water molecule is made up of three atoms: H22OO

• Water:Water:– Has no colour, no taste and no smell.Has no colour, no taste and no smell.– Is a poweful solvent.Is a poweful solvent.– Absorbs heat: so, water moderates the Earth’s climate by Absorbs heat: so, water moderates the Earth’s climate by

absorbing heat in summer and emitting heat in winter.absorbing heat in summer and emitting heat in winter.

Page 7: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

SEA WATERSEA WATER

• Sea water is salty.Sea water is salty.

• It contains dissolved gasses: these gasses It contains dissolved gasses: these gasses are dissolved in the water by two process:are dissolved in the water by two process:

– The movement of the waves.The movement of the waves.– The aquatic beings.The aquatic beings.

Page 8: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

• The temperature varies with depth:The temperature varies with depth:

It is highest at the surface.

It is lower in the deepest zones.

Page 9: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

• MOVEMENTS PRODUCED IN THE MOVEMENTS PRODUCED IN THE OCEANS:OCEANS:

– WavesWaves: occur on the surface, and they are : occur on the surface, and they are caused by the wind. Waves mix water with the caused by the wind. Waves mix water with the air above the surface, dissolving a lot of air above the surface, dissolving a lot of oxygen.oxygen.

Page 10: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

– CurrentsCurrents: are masses of water which : are masses of water which move like rivers through the sea. They move like rivers through the sea. They are produced by wind, and differences in are produced by wind, and differences in salinity.salinity.

Page 11: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

– TidesTides: are the periodic rise and fall of : are the periodic rise and fall of the sea level. They are caused by the the sea level. They are caused by the gravitational attraction of the Moon and gravitational attraction of the Moon and the Sun.the Sun.

Page 12: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.
Page 13: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.
Page 14: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

FRESH WATERFRESH WATER

• Fresh water is found on the continents.Fresh water is found on the continents.• It contains much less salt than sea water.It contains much less salt than sea water.• It is found in different forms:It is found in different forms:

– Streams: are water courses fed by rain.Streams: are water courses fed by rain.– Glaciers: are formed from the accumulation of snow on Glaciers: are formed from the accumulation of snow on

mountain tops.mountain tops.– Rivers: are permanent water courses. Rivers: are permanent water courses. – Lakes: are masses of water contained on depressed Lakes: are masses of water contained on depressed

areas.areas.– Groundwater: is water beneath the ground surface.Groundwater: is water beneath the ground surface.– Wetlands: are areas where the ground is inundated all Wetlands: are areas where the ground is inundated all

year round.year round.

Page 15: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

THE WATER CYCLETHE WATER CYCLE

Page 16: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

• Is the movement of water around, Is the movement of water around, over and through the Earth. It consist over and through the Earth. It consist on these processes:on these processes:

– Evaporation.Evaporation.– Evapotranspiration.Evapotranspiration.– Condensation.Condensation.– Precipitation.Precipitation.– Surface Runoff.Surface Runoff.

Page 17: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

• EvaporationEvaporation: liquid water changes to gas. : liquid water changes to gas. Water passes from the hydrosphere to the Water passes from the hydrosphere to the atmosphere.atmosphere.

Page 18: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

• EvapotranspirationEvapotranspiration: water evaporates : water evaporates from the leaves of plants.from the leaves of plants.

Page 19: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

• CondensationCondensation: Water vapour changes to : Water vapour changes to liquid, forming clouds.liquid, forming clouds.

Page 20: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

• PrecipitationPrecipitation: water in the clouds falls to : water in the clouds falls to the ground.the ground.

Page 21: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

– Surface RunoffSurface Runoff: surface water moves : surface water moves across the land, forming rivers and across the land, forming rivers and streams.streams.

Page 22: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.

– InfiltrationInfiltration: surface water filters into : surface water filters into the ground, using the pores in the rocks. the ground, using the pores in the rocks.

Page 23: THE HYDROSPHERE. Do you konw……..? Where can we find water in our planet? Where can we find water in our planet? How is sea water different to water in.