Marine Science Chapter 15
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30 terms
Terms | Definitions |
|---|---|
 acid | a solution that contains larger numbers of hydrogen ions than hydroxyl ions |
| acid precipitation | formed when moisture in the air absorbs chemicals |
| base | a solution that contains a larger number of hydroxyl atoms than hydrogen atoms. Also called an alkali |
| buffers | chemicals in the ocean that help maintain a stable (neutral) pH |
| compound | substance that contains two or more kinds of atoms that are chemicall bonded |
| condensation | process of cloud formation |
| dissolved oxygen | the oxygen that is dissolved in bodies of water |
| evaporation | process by which liquid water changes to a gas |
| halocline | layer of water that shows rapid increase in salinity |
| latitude | lines that run east and west; they show position north and south of the equator |
| longitude | lines that run north and south; they show position east and west of the prime meridian |
| mixture | contains two or more substances that can be seperated by ordinary physical means |
| neutral | a solution that contains equal numbers of hydrogen ions and hydroxyl atoms, having a pH of 7.0 |
| O2 minimum zone | area of lowest dissolved oxygen, at 1000 meters |
| pH | the degree of acidity or alkalinity of a solution |
| precipitate | a solid substance that may be produced when two liquids are mixed |
| precipitation | water that falls to the ground in the form of fog, rain, or snow |
| sea | a smaller part of an ocean, where two continents lie close together |
| sea level | the point at which the ocean surface touches the shoreline |
| solute | any substance that a solvent, such as water, holds in a dissolved state |
| solution | a solvent with substances (solutes) dissolved in it |
| solvent | substance, such as water, that can dissolve other substances |
| water budget | total amount of water contained in and on the earth |
| water cycle | continuous movement of water between ocean, atmosphere, and land |
| watershed | the land area through whcih water passes on its way to the ocean |
| Knot | one nautical mile per hour |
| degree | unit used to measure latitude and longitude |
| minute | division of a degree; there are 60 minutes in one degree |
| second | division of a minute; there are 60 seconds in one minute |
| nautical mile | one minute of latitude; 6080 feet or 1.2 statute (land) miles |
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