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isaiah wickham

on 5 April 2014

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Transcript of water

The Hydrosphere part 1
Their is 90% salt water
Comets from the outer reaches of the main asteroid belt colliding with the Earth may have brought water to the earth.
Chemical Properties of Water part 1
Cohesion, Adhesion
A universal solvent is a substance that dissolves most chemicals. Water is called the universal solvent because it dissolves more substances than any other solvent.
Adhesion and cohesion are water properties that affect every water molecule and also the interaction of water molecules with molecules of other substances. Cohesion and adhesion are the "stickiness" that water molecules have for each other and for other substances. The water drop is composed of water molecules that like to stick together, an example of the property of cohesion, the water drop is stuck to the end of the pine needles is an example of adhesion.
Universal Solvent
Chemical Properties of Water part 2
Physical Properties of Water part 1
Chemical Weathering
Chemical Properties of Water part 3
The Hydrosphere part 2
The Hydrosphere part 3
The hydrosphere
where did water come from
Capillary Action
Chemical weathering is the breakdown of rock (weathering) by chemical mechanisms,like carbonation, hydration, hydrolysis, oxidation and ion.
Capillary action is caused by the combination cohesive forces of the liquid and the adhesive forces between the liquid and tube. These forces pull the liquid up the tube.
Physical Properties of Water part 2
Surface Tension
Physical Weathering
Physical Properties of Water part 2
Physical weathering is caused by the effects of changing temperature on rock that breaks it apart.
water’s ability to absorb & store heat
Physical Properties of Water part 3
water’s role in regulating the climate
Physical Properties of Water part 4
On Earth, liquid water exists on the surface in the form of oceans, lakes and rivers. It also exists as groundwater and aquifers. Water moves through the hydrosphere in a cycle water collects in clouds, then falls to Earth in rain, sleet snow. The water collects in rivers, lakes and ocean, when it evaporates into the atmosphere to start the cycle all over again.
And 1% drinkable
Their is 1o% fresh water
The cohesive forces between liquid molecules are known as surface tension. The molecules at the surface of a glass of water do not have other water molecules on all sides of them. It is not really true that a "skin" forms on the water surface; the stronger cohesion between the water molecules the stronger the surface tension.
Water has a unique ability to absorb heat. Water is able to absorb heat - without increasing much in temperature - better than many substances. This is because for water to increase in temperature, water molecules must be made to move faster within the water; this requires breaking hydrogen bonds, and the breaking of hydrogen bonds.
The oceans cover more than 70 percent of the Earth’s surface. The oceans are a major role in regulating the weather and climate of the planet by cooling it down.
Whether the forecast calls for a dry spell, a balmy day, heavy snow, or a hurricane, the ocean has played a major role in it. Although the sun is the engine that drives all weather on Earth, the ocean and atmosphere steer the sun's energy along certain paths to produce both regional climates and individual weather phenomena. For example, the climate of the West Coast of the United States is kept moderate by winds warmed by the Pacific Ocean. And Hurricane Mitch, which resulted in the deaths of more than 10,000 people in Central America in 1998, was spawned—like all hurricanes—by the ocean.
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