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chapter 1 vocab
vocab
Term | Definition |
---|---|
astronomy | the study of objects beyond earths atmosphere |
meteorology | the study of the forces and processes that cause the atmosphere to change and produce weather |
geology | the study of the materials that make up earth the processes that form and change these materials and the history 0f the planet and its life-forms since its origin is the branch of earth science |
oceanography | the study of earths oceans which cover nearly three-fourths of the planet |
environmental science | the study of the interactions of organisms and their surroundings |
geosphere | the area from the surface of earth down to its center |
atmosphere | the blanket of gases that surrounds our planet |
hydrosphere | all the water on earth including the water the atmosphere makes up |
biosphere | includes all organisms on earth as well as the environments in which they live |
scientific methods | are a series of problem-solving procedures that help scientists conduct experiments |
hypothesis | a testable explanation of a situation that can be supported or disproved by careful procedures |
independent variable | is an experiment is the factor that is changed by the experimenter |
dependent variable | is a factor that is affected by changes in the independent variable control |
control | is used in an experiment to show that the results of an experiment are a result of the condition being tested |
le systeme international d'unites | scientific investigations use a standard system of units |
scientific model | is an idea picture a system or a mathematical expression that represents the concept being explained |
scientific theory | is an explanation based on many observations during repeated investigations |
scientific law | is a principle that describes the behavior of a natural phenomenon |