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scientific method

basic steps used by scientists in solving problems


most logical explanation for events that occur; although unproven


rules that describe a pattern in nature, like gravity


use: senses, tools, qualititves, quantitives


describes qualities or characteristics - color, ordors, sounds, textures


numerical data - mass, density, length, volume, temperature, amount

scientic methods

ways, or steps to follow, to try to solve problems and answer questions

2 types of scientific research

desriptive or qualitive research and experimental research

descriptive research

research based on observations (think of describing)

experimental research

testing a hypothesis, scientific method

parts of experimental research

stating a question, research background information, forming a hypothesis, testing you hypothesis, data collection, analysis/graphs and conclusion

stating a research question

describe the question you want to answer

research background information

find out as much as you can about your problem

forming a hypothesis

states for effect of the independent variable on the dependent variable; if, then statements; use knowledge to form your hypothesis


statement that can be tested

testing your hypothesis/procedure

identify variable; write you materials list; write the procedure

independent variables

sometimes called manipulated variables; variable that is changed; what is being tested

dependent variables

sometimes called responding variables; variable that is being observed and measures

controlled variables

sometimes called constants; not allowed to change;


sample that is treated like the other experimental group except that the independent variable is not applied to it

data collection

create a chart or table to store and organize data; do experiment and record results


displays trends, patterns & relationships can be seen; allows us to see if data supports hypothesis or not


changes, increases, decreases in data


repeated data that is similar


how one variable affects another

bar graph

used to show comparisons

line graph

used to show changes & trends


the final summary of an investigation; includes a restatment of the question and hypothesis, discusses the data, what the data means, problems with the research, ways to carry the research further, why the research is important


temperature scale used in the metric system

data chart

a place for recording data; may be numbers or pictures

data collection

writing down the observations and results of an investigation numerical data is recorded in data tables, other types of data are recorded in data charts

data table

a place recording quantititive data in rows and columns


the observations and results of an experiment; information gathered during an experiment


display of a scientific model that simply shows how something works

descriptive research

research based on observations

experimental design

the plan for deciding how to answer a scientific question; the material and procedures used to conduct an experiment

experimental research

investigation that involves variables; scientific test in which data is gathered/compared with the used of variable and often a control


amount of matter in an object


the step-by-step insturction for conducting an investigation


what the scientist is trying to find out; called the Research Question


scientific information gathered through observations, surveys


a way of learning about the world around us


factor being tested in an experiment


amount of space an object occupies

scientific method acrostic

sarah coughs while peter eats awesome walnuts


variables that could change, but are not allowed to; also called variables


display of scientific model that simply shows how something works


indepent goes on


dependent goes on

circle graphs

a circle divided into sections to display data; each section represents part of the whole; all sections together equal 100%

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