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Chapter 1 ES Vocab
vocab
| Earth Science Chapter 1 | by-kynndellO |
|---|---|
| Astronomy | Study of subjects beyond Earth's atmosphere. |
| Geology | Study of materials that make up Earth and the processes that form and change these materials, and the history of the planet and its life-forms since its origin. |
| Oceanography | Study of Earth's oceans including the creatures that inhabit its water, its physical and chemical properties and the effects of human activities. |
| Environmental Science | Study of the interactions of humans with environment. |
| Geosphere | The part of Earth from its surface to its center. |
| Atmosphere | Blanket of gases surrounding Earth that contains about 7% nitrogen, 21% oxygen, and 1% other gases such as argon carbon dioxide, and water vapor. |
| Hydrosphere | All the water in Earth's oceans, lakes, seas, rivers, and glaciers plus all the water in the atmosphere. |
| Biosphere | All of Earth's organisms and the environments in which they live. |
| Scientific Methods | A series of problem- solving procedures that help scientists conduct explained. |
| Hypothesis | A testable explanation of a situation. |
| Independent variable | Factor that is manipulated by the experimenter in an experiment. |
| Dependent Variable | Factor in an experiment that can change if the independent variable is changed. |
| Control | Standard for comparison in an experiment. |
| Le Systeme International d'unites (si) | Replacement for the metric system; based on a decimal system using the number 10 as the base unit; includes the meter:(m), seconds:(s), and kilogram:(kg). |
| Scientific Notation | A method used by scientists that express a number as a value between 1 and 10 multiplied by a power of 10. |
| Scientific Model | An idea, a system, or a mathematical expression that represents the idea being explained. |
| Scientific Theory | An explanation based on many observations during repeated experiments; valid only if consistent with observations, can be used to make testable predictions, and is the simplest explanation; can be changed or modified with the discovery of new data. |
| Scientific law | A principle that describes the behavior of a natural phenomenon. |