| Term | Definition |
|---|
| polar molecule | a molecule that has electricly charged areas |
| capilary action | A property of water thar allow water to move through materials with pores inside |
| surface tension | the tightness across the surface of water \ |
| solution | a mixture that forms when one substance dissolves another |
| solvent | the substance that dissolves another object |
| specific heat | the amount of heat used to raise an object's temp. by 1 degree C |
| evaporation | the process when a liquid becomes a gas |
| condensation | where a gas becomes a liquid |
| Photosynthesis | the process where a plant uses water and the sun to make its own food |
| habitat | the place where something obtains all of its needs |
| groundwater | water that fills the cracks underground |
| water cycle | the continous process of water moving to the atmosphere and back |
| transpiration | the evaporation given off by plants |
| precipitation | any form of water that falls to earth's surface |
| tributary | streams that flow into larger rivers |
| watershed | the land that supplies water to a river system |
| divide | where one watershed is sepperated from another |
| nutrients | substances that enable plants to grow` |
| eutrophication | where nutrients build up in the lake making more plants to grow |
| reservoir | a lake that stores water for human use |
| wetland | an area covered with shallow water during most or all of the year |
| permeable | where rocks have small holes in them allowing water to go threw |
| saturated zone | where the ground is totally filled with water |
| water table | the top of the saturated zone |
| unsaturated zone | the layer of rock above the saturated zone |
| aquifer | any underground area that holds water |
| artesian well | where water rises because of pressure |
| irrigation | the process of supplying water to an area to make it suitible for growing crops |
| conservation | the practice of using less of a reasource so it will not be used up |
| desalination | the process of taking salt out of saltwater |
| water quality | a measurement of the substances in water besides water molecules |
| concentration | the amount of one substance in a certain volume of another substance |
| pH | a measuremeant of how acidic water is |
| hardness | the amount of calcium and magnesium in water |
| filtration | the process of passing water through screens to remove larger particles in it |
| coagulation | where particles stick together in flocs to make them heavy |
| sewage | the wastewater and the different wastes in it |
| fossil | the preserved remains or traces of living things |
| mold | a hollow area in sediment in the shape of an article |
| cast | a solid copy of the shape of an organism |
| petrified fossil | fossils where minerals replace all or part of an organism |
| carbon film | an extremely thin coating of carbon on rock |
| trace fossil | provide evidence of the activities of ancient organisms |
| paleontologists | scientists who study fossils |
| scientific theory | well-tested concept that explains a wide range of observations |
| evolution | gradual change in living things over long periods of time |
| extinct | no longer existing and will never live on Earth again |
| relative age | the age of a rock compared to other things |
| absolute age | the number of years since the rock formed |
| law of superposition | an way to determine the age of rocks |
| extrusion | lava that flows onto a surface |
| intrusion | where magma cools and hardens inside a rock |
| fault | a break in the earths crust |
| unconformity | where new layers meet older layers of rock |
| index fossil | a fossil that must be widely distributed and represent a type of organisms that existed only belief |
| geologic time scale | a record of the life forms and geologic events in earth's history |
| periods | sections inside of eras |
| era | a part of earths history in the time scale |
Combine with other sets
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