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Water Prop. Test

water properties

what is the difference between surface water and ground water? surface water is on the surface, ground water is underground.
what river do you live in? Cape Fear
how many river basins are there in NC? 17
what is transpiration? water vapor given off by plants.
what is infiltration? water seeping through the soil.
what are tributaries? a stream or smaller river that flows into a larger river.
how do bodies of fresh water die? too much algae growth.
two types of wetlands? swamps, buoy.
why are wetlands important to people? they act as pollution filters and flood protection.
one material that could create an impermeable layer? clay
in order for a well to produce water, the bottom of the well needs to be in what water zone? saturated zone.
what is the best classification for NC reservoirs, such as Little River Reservoir? surface water.
what would most likely occur in the hydrosphere if the ice caps melted? a change in the salanity of the oceans in the hydrosphere.
what is something true about the distribution of water in the hydrosphere? the amount of water in the hydrosphere remains constant.
how many people lack access to clean water? 1.2 billion
what are two groundwater concerns? Dries out areas above it and are expensive.
where would you find water in the accumulation stage of the water cycle? where the oceans or glaciers are.
what are the three types of water properties? molecular formula, empirical formula, structural formula.
what is molecular formula? (exact recipe) H2O; two hydrogen atoms and one oxygen atom
what is empirical formula? (reduced, like a fraction) h2O also since it's already reduced
what is structural formula? ( shape ) H H O
what is polarity? the root of all specialness
what do water molecules have? have a positive charge on one end and negative on the other.
cohesion water molecules are electrically attracted to each other and stick together. positive hydrogen end links to a negative oxygen end, that oxygen links to a hydrogen, etc.
surface tension cohesion on the surface. a net of water molecules holding each other. responsible for the dome of water on an overfull glass and waters strider's ability to walk on water.
adhesion because pf their polarity water molecules are electrically attracted to other the polar molecules of other substances. like your arm. when washing dishes. annoying.
capillary action cohesion and adhesion working together to pull water up a tube or fiber. by adhesion a water molecules want to crawl up the inside of a tube. by cohesion he pulls his buddy water molecules along.
specific heat the amount of heat required to raise 1 gram of liquid one degree celcius. it's different for different liquids it takes a lot of heat to make waters temp. go up.
dissolving ability a substance is dropped in water negative ends of the water molecules are attracted to the positively charged parts of solutes (stuff being dissolved) water molecules tug these solute ions from each other and surround these parts, which dissolves sub.
density mass divided by volume. how much mas is in a space
buoyancy ability of less dense objects to float in more dense objects, provides and upward force on an object in water or other liquid
positive buoyancy = floating
negative buoyancy = sinking
neutral buoyancy = neither sinking nor floating ; fish
Created by: Evidenceofstudy