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Scientific Method

Study the scientific method

Scientific Method a series of steps used to answer a question or solve a problem
Hypothesis a possible explanation or answer to a question, and it uses the word "affect"
Prediction an IF-THEN statement that states in advanced the results of the experiment
Variable what is being studied
Control group when the variable in not changed; used for comparison
Experimental group has one variable that changed
Independent variable what changed in the experiment
Dependent variable what changes due to the independent variable
Controlled experiment tests one variable at a time; containing a control group, experimental group, and a variable
Theory Current explanation of why or how something happened
Law explains what happens in the experiment that over time is proven to be true
Label the 6 steps of the scientific method State a problem, form a hypothesis and prediction, design the experiment, perform experiment and analyze results, draw conclusion, and communication
What do scientist do in step one- state a problem? Gather information by making observations and asking questions
How do scientists make observations? Use one or more of your 5 senses to identify objects or events
What do you do when designing the experiment? Test the hypothesis
What groups and variables are in the experiment? controlled group, experimental group, independent variable, and dependent variable
What do scientists do during step 4- perform experiment and analyze results? Collect data, look for patterns in data of the experiment, and do the experiment many times with many subjects to make sure analyzing and conclusions are correct.
What do scientists do during step 5- draw conclusion? State results, check to see if the results support the hypothesis, and they explain why or why not
What do scientists do during step 6- communication? Use lab reports, articles, and presentations to explain research and results, and they may repeat their experiment again with other people's ideas and suggestions.
Why is it important to do an experiment more than once? Should a scientist have a large or small number of subjects in an experiment? Why? A large number of subject in an experiment helps make sure analyzing and conclusions are correct. It increases the reliability of the research.
Created by: spuent