Physical Science-Chapter 1 Vocabulary Review

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Chapter 1 Vocabulary

observing

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)

inferring

explaining or interpreting the things that you observe

predicting

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

hypothesis

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

data

the facts, figures and other evidence gathered through observations.

communicating

sharing ideas and conclusions with others through speaking and writing

law

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

theory

well-tested explanation for a set of observations

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