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AMS SOL 6.5
| Question | Answer |
|---|---|
| density | ratio of mass per unit of volume |
| why does ice float? | it is less dense than liquid water |
| freezing points of water | 32F and 0C |
| boiling points of water | 212F and 100C |
| polar molecule | uneven sharing of electrons causes one end to be positive and the other to be negative |
| postive end of a water molecule | Hydrogen |
| negative end of a water molecule | Oxygen |
| cohesion | attraction between water molecules; water sticks to water |
| adhesion | water molecules stick to other materials |
| surface tension | the tightness across the top surface of water caused by cohesion |
| capillary action | allows water to move upward against the force of gravity |
| Universal Solvent | nickname for water because it dissolves more substance than any other material |
| weathering | rock is broken into smaller peices, sometimes by water |
| ice wedging | a form of physical weathering that occurs as a result of pressure on rock from frozen water |
| erosion | the movement of rock particles by wind or water |
| breakdown of percentages of water on Earth | 97% ocean, 2% fresh but frozen in glaciers, 1% fresh and available to drink |
| Uses of water for transportation | boats, ships, barges, aircraft carriers |
| uses of water for agriculture | irrigation (watering) crops |
| residential uses of water | bathing, cooking, cleaning |
| uses of water in industry | cooling off machinery, shipping of products |
| Uses of water for recreation | fun things like swimming, surfing, scuba diving |
| water as a habitat | home for fish, crabs, seaweed, etc. |
| hydroelectric power | the force of moving water is used to turn the turbines connected to the generators at an electrical power plant |
| water cycle | water is recyled over and over through evaporation, condensation, precipitation, and transpiration |
| transpiration | plants release water vapor from their leaves |
| aquifer | a layer of underground rock that holds fresh drinking water |
| solution | mixture created when one substance dissolves another |
| solvent | part of a solution that does the dissolving |
| solute | part of a solution that is being dissolved |
| types of chemical weathering | acid rain, dissolving, rusting |
| specific heat | the amount of heat need to increase the temperature of a substance by 1 degree Celcius; water has high specific heat |
Created by:
sford
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