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Rivers and seas

enero 8, 2014

The hydrosphere is made up of al the water on the Earth. This includes the water in the seas, oceans, rivers, lakes, polar ice caps, groundwater and the water vapour in the atmosphere. Water is the most abundant resource on the Earth. It can be found in a solid (ice), liquid (water) o gaseous (vapour) state. Water is the main component in the water cycle, but is not an unlimited resource.

If you want to understand what is the water cycle, watch the following video and answer the questions placed before the end.

Fresh water can be found in the ground, in lakes and rivers, in icebergs and glaciers, and in the atmosphere. The water in rivers is constantly moving. The next presentation is really complete about hydrosphere.

The water in oceans and seas is always moving because of waves, tides and oceans currents. In the following video, is explained why happen oceans currents.

I would like to share with you an excellent digital book about water on Earth. Click on the image to link the resource!

Water on Earth

Water is an important resource for human survival. The deal of the water in the Earth is very irregular and contrasts between different countries are frequently commons. The next worksheet (1esoWater) is dedicated to expose how we use water and what should we do to use it more fairly.

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2 comentarios
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