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Chapter 1 Vocabulary


using one or more of your five senses to gather information

qualitative observation

descriptions that do not involve numbers

quantitative observation

descriptions that involve numbers (or measurements)


explaining or interpreting the things that you observe


forecasting what will happen in the future based on past experience.


possible answer to a science question or explanation for a set of observations.

manipulated variable

variable that is changed

responding variable

variable that changes as a result of changes in the manipulated variable

controlled variable

a variable that is kept the same during an experiment

controlled experiment

an investigation in which all the variables remain the same except one


the facts, figures and other evidence gathered through observations.


sharing ideas and conclusions with others through speaking and writing


statement that describes what scientists expect to happen every time under a particular set of circumstances


well-tested explanation for a set of observations

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