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20 Cards in this Set
- Front
- Back
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Tightness across the surface of water that is caused by polar molecules pulling on each other is called ____ |
Surface tension |
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Water is often called the universal solvent because |
It dissolves so many substances |
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Water is the only substance on earth that |
Commonly exist in all of its different states |
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The gaseous form of water is called |
Water vapor |
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What happens to liquid water at 0°C |
It freezes |
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Water that fills the cracks and spaces in underground soil and rock layers is called |
Ground water |
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A river system is made up of a river and it's |
Tributaries |
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A lake that stores water for human use is called a |
Reservoir |
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What seasonal change refreshes the supply of nutrients throughout a lake |
Lake turnover |
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Materials that allow water to pass through them easily are |
Permeable |
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An aquifer is a |
Underground layer of rock or sediment that holds water |
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Using less water so that it will not be used up is called |
Conservation |
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The amount of one substance in a certain volume of another substance is its |
Concentration |
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Pure water is neutral meaning it is neither an acid or nor a bass pure water has a pH of |
7 |
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The first step in treating water from a river or lake is usually |
Filtration |
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Why Might chlorine be added to drinking water |
Chlorine kills disease causing microorganisms |
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What enables water to move through a system of pipes |
Water pressure |
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A water pollutant that is caused by smoke and exhaust is |
Acid rain |
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An example of how living things can help clean up polluted water is |
Adding oil eating bacteria to water polluted by an oil spill |
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Which of the following is necessary to build a hydroelectric powerplant |
A fast-moving river |
