The water vapour condensed from the volcanic activity slowly cooled down and created the oceans
Properties of Water
Good solvent
High Thermal Capacity
Maximum density as a liquid
WATER CYCLE
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Describes the continuous movement of water on, above and below the surface of the Earth.
The mass of water on Earth remains fairly constant over time but the partitioning of the water into the major reservoirs of ice, fresh water, saline water and atmospheric water is variable depending on a wide range of climatic variables. The water moves from one reservoir to another, such as from river to ocean, or from the ocean to the atmosphere, by the physical processes of evaporation, condensation, precipitation, infiltration, runoff, and subsurface flow. In doing so, the water goes through different phases: liquid, solid (ice), and gas (vapor).
Evaporation/vaporisation
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Changes from liquid to gas
Transpiration
Condensation
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Water changes from gas to liquid
Precipitation
Water Cycle
and Climate
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Climate is a measure of the average pattern of variation in temperature, humidity, atmospheric pressure, wind, precipitation, atmospheric particle count and other meteorological variables in a given region over long periods of time.
The water cycle involves the exchange of energy, which leads to temperature
changes. For instance, when water evaporates, it takes up energy from
its surroundings and cools the environment. When it condenses, it
releases energy and warms the environment. These heat exchanges
influence climate.
Water Cycle
and
Landscape
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The shape od relief depends on the water cycle.
EARTH'S FRESHWATER
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Freshwater can be found in the form of:
Rivers and Torrents.
Glaciers
Lakes and Pools
Groundwater
WATER USE AND CONSUMPTION
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Porpouses: agricultural, livestock, domestic, commercial and industrial.
Reservoires: wells, desalination..
Quality:
1.- purification process
2.- Wastewater (sewage) treatment.