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My last Water projectBy Zoe Robinson

Fresh waterThere is only 3 percent of fresh water on the earth. We only use one percent of fresh water. Fresh water is lakes, rivers, and ponds. A pond is small lake.

Salt waterThere is about 72% of salt water on the earth.

Ground WaterWhen it rains the water doesn’t stop moving. Some of the water goes into the ground and some goes into lakes and ponds. Ground water is found in cracks and spaces of soil, rocks, and sand. Ground water can go into lakes and rivers. If ground water gets polluted it will not be safe to drink and it’s used for drinking water by 50% of the United Sates.

GlaciersA glacier is a huge mass of moving ice. A glacier is formed when snow falls but only some of it melts and turns into ice. This goes on for years until it gets bigger and bigger and turns into a glacier.

The steps of the water cycle

The water cycleThe water cycle is when the sun evaporates water from lakes and oceans.

The water cycle Then water vapor goes into the air and forms a cloud and then more and more water vapor comes together.

Water CycleThen it falls either as rain, snow, or ice. Then it starts over.

Water CycleThe water cycle causes clouds to form and that causes changes in the atmosphere.

Ocean Topography

Ocean TopographyThe continental shelf is next to the land. It slops about one degrees. This is were major rivers empty into.

Ocean TopographyThe continental slope is the transition between the continental shelf and the ocean floor. It’s four degrees slope. At the bottom of the slope is the ocean floor.

Ocean topographyThe deep ocean basin is more than half of the earths surface. The deep ocean bassin has volcanoes, hills, and under water mountains. There is a mid ocean ridge that is several hundred miles wide.

Ocean TopographyThe trench is a really deep depression in the ocean which is basically a ditch in the ocean. They are long and narrow. They can be 34,000 feet deep.

Currents and Tides

TidesTides are formed by the magnetic pull from the oceans moon and sun. When the moon circles the earth its gravitational pull on the ocean causes the tides. The sun has some effect too but it is further away and it is not as good as the moons effect. When the sun and moon and earth are all aligned it causes a high tide. When the sun and moon and earth have a 90 degree angle it causes a low tide.

Ocean CurrentsOcean Currents are caused by rotation of the earth. The rotation of the earth moves the currents clockwise in the northern hemisphere but it moves them counter clock wise in the southern hemisphere. The currents that are deeper in the water flow a different direction then the ones on top.

WavesWaves are formed by wind. Stronger winds like in a storm make bigger waves. Through the friction between the air molecules and the water molecules the wind transfers some of its energy to the water.

Tidal wavesA tidal wave can also be called a tsunami. A tidal wave is formed by under water earthquakes, volcanic eruptions, or landslides. About 90% of tsunamis are caused in the pacific ocean.

How humans effect the water

How humans effect the waterHumans effect the water by pollution. It puts chemicals in the water which is not good for the fish and it makes the water not drinkable.

How humans effect the waterDeforestation means when they cut down trees. When they cut down trees there is less water vapor in the air and with less water vapor there is less rain. That can cause droughts.

Resource listhttp://learning.mgccc.cc.ms.us/science/ocean/sld014.htmhttp://www.enchantedlearning.com/subjects/ocean/Waves.shtmlhttp://www.bigsiteofamazingfacts.com/what-causes-ocean-currentswww.wikispaces.comhttp://www.sciencelearn.org.nz/contexts/h2o_on_the_go/science_ideas_and_concepts/humans_and_the_water_cycle