Earth Science Topic 1

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Classification

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The grouping together of similar observations and inferences to make the study of objects and events in the environment more meaningful or easier to understand.

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Mass

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The amount of matter in an object: unlike weight, not affected by location.

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Cyclic Change

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An orderly change in the environment in which an event repeats itself with reference to time and space: the opposite of random change.

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Measurement

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A means of expressing an observation with greater accuracy or precision

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Density

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The concentration of matter in an object: the ratio of the mass of an object to its volume

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Observation

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Any information that is collected with any of the senses

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Dynamic Equilibrium

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A condition of the balancing out of opposing forces or actions

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Pollution

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The occurrence in the environment of a substance or form of energy in concentrations large enough to have an adverse effect on people, their property, or plant or animal life.

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Inference

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An interpretation of an observation: conclusion, or deduction based on observations

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Rate of Change

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How much a measurable aspect of the environment, called a field, is altered over a given time