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All About Water Review
Water exists (comes) in 3 states or phases. They are solid, liquid and gas. Solids, liquids and gases all take up space. Water is made of Hydrogen and Oxygen. It is made of 2 Hydrogen atoms and 1 Oxygen atom. When you change the phase (state) of water, the chemical make up of water stays the same. It may look different, but it still has 2 Hydrogen atoms and 1 Oxygen atom. The chemical name for water is H20 . To change water from a liquid to a gas, heat it to 100° Celsius (boiling). To change water from a solid to a liquid, heat it. To change water from a liquid to a solid, cool it to 0° Celsius (freezing). 3/4 of the Earth's surface is covered with water. Out of all the water on Earth, most of the water (97% of the water) is salt water. Only about 3 % of the water on Earth is fresh usable water. If you dig deep enough, you will find water. Plants and animals are composed (made) mostly of water.
The Water Cycle is made up of evaporation, transpiration, condensation, precipitation and collection.
Evaporation occurs  when the sun heats up the water and turns it into vapor or steam.
Transpiration is when water vapor is released into the air through plants (mostly leaves).
Condensation is when the water vapor in the air gets cold (the temperature falls) and changes back into a liquid, forming clouds. Precipitation is when so much water has condensed that the air cannot hold it anymore and the water falls to the ground. High humidity means there is a lot of moisture in the air and rain is more likely to happen. The clouds get heavy and water falls. Clouds are collections of condensed water vapor. When it's very humid, the clouds are getting full of water and rain may happen. The temperature of the air and height of the clouds affect whether we get rain, sleet, hail or snow. Conserving water is important. It means we are careful and not wasteful when we use water.
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