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WATER CYCLE |
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1-Define "water cycle". 2-When water changes from a liquid to a gas, it is called________________________. 3- Water can exist as each of the three states of matter: ___________________, ___________________, and ____________________. 4-The earth has a limited amount of water. True / False 5-People perspire (sweat) and plants ______________________. 6-Water vapor in the air gets cold and changes back into liquid, forming clouds.This is called __________________________. 7-Rain, hail, sleet or snow is considered ______________________________. 8-What fraction of the earth’s water is fresh? 9-What percentage of all the Earth’s water is in a form that is useable to humans and land animals? 10-Why is evaporated water so clean? 11-Condensation is the opposite of ____________. 12-Condensation occurs when a ____________ is changed into a __________. 13-When the ________________ and ___________________ are right, the small droplets of water in clouds form larger droplets and precipitation occurs. 14-What factor is most important in determining whether water is a solid, liquid, or gas? |
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