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PCS Earth Science
Chapter 1 Vocabulary - The Nature of Science
| Term | Definition |
|---|---|
| hypothesis | an educated guess |
| astronomy | the study of the moon, stars, and other objects in space |
| meteorology | science dealing with the atmosphere and weather |
| geology | science dealing with the earth's history as recorded in rocks; study of Earth |
| oceanography | study of Earth's oceans |
| asthenosphere | the soft layer of the mantle on which the lithosphere floats |
| hydrosphere | all the water at and near the surface of the earth; 97% of which is in oceans |
| atmosphere | a mixture of gases that surrounds a planet or moon |
| biosphere | consists of all life on Earth and all parts of the Earth in which life exists, including land, water, and the atmosphere |
| lithosphere | a rigid layer made up of the uppermost part of the mantle and the crust |
| scientific methods | problem solving procedures scientists use to solve scientific mysteries |
| independent variable | the variable that you can change |
| dependent variable | are variables being measured |
| scientific theory | explanation or model backed up by results of many tests and experiments |
| scientific law | is a rule that describes the behavior of something in nature |
| control | is a standard to which your results can be compared |
| SI units | international system of units, the metric system of measurements which is used by all scientists |