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Water Word Cards Glossary clouds - Clouds form when water vapor condenses. Water vapor condenses onto tiny particles of dust. These drops stick together to form clouds. condenses/condensation - Water condenses when it changes from a gas to a liquid. Water vapor (a gas) turns into drops as water cools. We can see condensation as dew drops on leaves. Clouds are formed when water condenses in the sky and sticks to tiny particles of dust. Drops sliding down a glass of ice water have condensed. conserve – to avoid wasteful or destructive use. Easy ways to conserve water: Don’t let the faucet run when you brush your teeth; Turn water faucets off tightly so they don’t drip. Take shorter showers. cycle - something that happens over and over again. evaporate/evaporation - Water evaporates when it changes from a liquid to a gas. The sun’s heat makes water evaporate. When water changes to a gas, this process is called evaporation. groundwater – Groundwater is an important part of the water cycle. Groundwater is part of the precipitation that seeps down through the soil until it reaches rock material. Water in the ground is stored in the spaces between rock particles. H2O – the scientific formula for water--two molecules of hydrogen attached to one molecule of oxygen. Water is made of hydrogen and oxygen. freezes – When water turns to a solid (ice) at 32 degrees Fahrenheit or 0 degrees Celsius. oil spill – when water is polluted by a tanker or other large oil-carrying vessel that has been damaged and leaks into a lake or marine environment. Oil spills are very difficult, time-consuming, and costly to clean up. precipitation – water that falls from the clouds in the form of rain, snow, sleet, or hail. www.planetbonehead.com H-2-Oh-No! episode Water Word Cards Glossary runoff – Liquid water that runs downhill across the earth’s surface-sometimes slowly as in a swamp--sometimes quickly as in a waterfall. Three states of water: solid, liquid, and gas – Water is a solid when it freezes. Water is a liquid at room temperature. Water is a gas called water vapor when it evaporates into the air. transpiration – when water gets drawn up into the roots of plants and then moves out of the leaves and into the air as water vapor. Think of the plants as drinking with their roots and sweating with their leaves! Water vapor – the gas form of water. Water vapor is formed when liquid water evaporates into the air. The sun’s heat makes water evaporate and form vapor. When water boils, it turns to steam. This steam is also called water vapor! Water cycle – The movement of water around the Earth. The Earth has all the water it will ever have and this water is recycled over and over and over. Water evaporates from the ocean and becomes part of the air as water vapor. Some of the water vapor condenses into water droplets and becomes clouds. Some clouds create rain, snow, sleet, or hail and this water falls back down to the Earth. The water that falls to the Earth and is absorbed by the ground is called ground water. Some of this water runs over the Earth and gathers or accumulates in ponds, lakes, streams, and rivers, or oceans. This water is called runoff. Water is very sticky! – This is one of the properties of water. Water droplets run together and “stick” to each other because each water molecule is attracted to other water molecules. www.planetbonehead.com H-2-Oh-No! episode