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Ch. 1 Science Skills
Vocabulary
| Term | Definition |
|---|---|
| science | a system of knowledge about the natural world and the methods used to find that knowledge. |
| technology | the use of scientific knowledge to solve practical problems. |
| chemistry | the study of the composition, structure, properties, and reactions of matter. |
| physics | the study of matter and energy and the interactions between the two through forces and motion. |
| geology | the study of the origin, history, and structure of Earth. |
| astronomy | the study of the universe beyond Earth. |
| biology | the study of life and life processes |
| scientific method | an organized plan used for gathering, organizing, and communicating information. |
| observation | information obtained through the senses. |
| hypothesis | a proposed answer to a question. |
| manipulated variable (independent variable) | the variable that causes a change in another variable |
| responding variable (dependent variable) | a variable that changes in response to a change in the manipulated variable. |
| controlled experiment | an experiment in which only one variable, the manipulated variable, is deliberately changed at a time. |
| scientific theory | a well-tested explanation for a set of observations or experimental results. |
| scientific law | a statement that summarizes a pattern found in nature. |
| model | a representation of an object or event. |
| scientific notation | a way of expressing a value as the product of a number between 1 and 10 and a power of 10. |
| length | the straight line distance between two points. |
| mass | the amount of matter in an object. |
| volume | the amount of space taken up by an object. |
| density | the ratio of a material's mass to its volume |
| conversion factor | a ratio of equivalent measurements that is used to convert a quantity from one unit to another. |
| precision | a gauge of how exact a measurement is. |
| significant figures | all the digits in a measurement that are directly measured, plus the last digit, which is estimated. |
| accuracy | the closeness of a measurement to the true value of what is measured. |
| thermometer | an instrument that measures temperature. |
| slope | the steepness of a line, equal to the ratio of a vertical change to the corresponding horizontal change. |
| direct proportion | a relationship between two variables in which their ratio is constant. |
| inverse proportion | a relationship in which the product of two variables is a constant when all other variables are held constant. |
Created by:
frankivagnozzi16
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