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es chapter 1
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 of 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 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 in the atmosphere |
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 | is a testable explanation of a situation that can be supported or disproved by careful procedures |
independent variable | in 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 | is used in an experiment to show that the results f an experiment are a result of the condition being tested |
le systeme international d unites | scientific investigations use a standard system of units |
scientific notation | in which a number is expressed as a value between 1 and 10 multiplied by a power of 10 |
scientific model | is an idea picture a system or a mathematical expression that represents the concept being explained |
scientific theory | is an explanation base on many observations during repeated investigations |
scientific law | is a principle that describes the behavior of a natural phenomenon |