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Definitions
Definitions
Definitions
Questions
Questions
100
The degree of conformity of a measure to a standard or a true value.
What is accuracy?
100
A variable that is kept the same from trial to trial.
What is a controlled variable?
100
Having the ability to get similar results from multiple trials.
What is reproducible?
100
Systematic investigation- an investigation in which you have to go through different trials and identify all variables.
Name two things Juanita must do to know the distances of the shortest and longest flights.
100
Independent variable- the variable that changes. Dependent variable- the variable that may or may not change. Controlled variable- factor that should be kept the same (constants).
Why might it be difficult to test just one independent variable at a time? Use the example of Juanita and her glider in your answer.
200
A decision based on investigations and evidence.
What is Conclusion?
200
The factor in an experiment that changes as a result of a change in a dependent variable.
What is a dependent variable?
200
A question used to focus the purpose of a scientific investigation and the procedures used to complete it.
What is a research question?
200
In order for Juanita to know the distance of the longest and shortest flights she must measure the distance of each flight and record each distance she measures.
Why do you think Juanita decided that this was not the best way to figure out how to improve her glider?
200
She should conduct her trials in a gym where wind remains constant.
Juanita already has a control group. (You read about it earlier.) What is it?
300
A controlled variable in an experiment that is kept the same from trial to trial.
What is a Constant?
300
An experiment in which one independent variable is tested by keeping all other independent variables the same.
What is a fair test?
300
The number of observations or data.
What is sample size?
300
She should test one independent variable at a time.
If you were Juanita, which of the three variables would you test first? Why?
400
A set of observations made in an experiment, in which the independent variables are not changed, to be sure that the dependent variables stay the same.
What is a control group?
400
An idea that can be tested by a scientific investigation.
What is a hypothesis?
400
An investigation in which all variables are identified and recorded so that the investigation can be repeated.
What is systematic investigation?
400
You should always test one variable at a time. I would test shortening the wingspan first for more surface area to get more lift.
Suggest how Juanita can keep factors such as wind speed and direction constant in her trials.
500
A variable that is isolated for study in an experiment and that the experimenter manipulates.
What is an independent variable?