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Definitions
Definitions
Definitions & Notes
Notes
Notes
100
An investigation in which all variables are identified and recorded so that the investigation can be repeated.
What is systematic investigation
100
A variable that is kept the same from trail to trial.
What is controlled variable.
100
The degree of conformity of a measure to a standard or a true value.
What is accuracy
100
If you were Juanita, which of three variables would you test first, why?
What is Always test one variable at a time. I would test the wingspan first because there will be more aerodynamics
100
What is Juanita's independent variable?
What is the 25 gram clip
200
A testable idea.
What is hypothesis
200
A controlled variable in an experiment that is kept the same from trial to trial.
What is constants
200
Having the ability to get similar results from multiple trials.
What is reproducible
200
Suggest how Juanita can keep factors such as wind speed and direction constant in her trials.
What is she should conduct her trials in a gym where the wind remains constant
200
What is Juanita's dependent variable?
What is the distance the glider travels
300
A changeable factor.
What is variable
300
An experiment in which one independent variable is tested by keeping all other independent variables the same.
What is a fair test.
300
A decision based on investigation and evidence.
What is conclusion
300
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.
What is there are many variables that effect the experiment independent variable- it changes dependent variable- may or may not change control variable- factors that should remain the same
300
Juanita's friend Charelle says that Juanita is working too hard. Charelle says that each time Juanita moves the clip, she should throw the glider only once. Will the method produce a sufficient answer?
What is more trials are necessary for Juanita to determine the best place to add the weight to the glider.
400
A variable that is isolated for study in an experiment and that the experimenter manipulates.
What is independent variable.
400
A set of observations in which no variables are changed.
What is a control group.
400
Name two things that Juanita must do to know the distance of the shortest and longest flights.
What is In order for Juanita to know the distances for the shortest and longest flights, she must measure the distance of each flight and record each different measurement.
400
Juanita's hypothesis is now more focused. Restate it.
What is if I put a 25 gram clip in a certain spot along the glider, then it would fly farther
400
Why is it important that Juanita write down the location of the clip and result each time?
What is she must map the location of the clip to length of the flight and record keeping will let her know which location of the clip will best work.
500
The factor in an experiment that changes as a result of a change in an independent variable.
What is dependent variable
500
The number of observations made when gathering the data.
What is sample size
500
Why do you think Juanita decided that this was not the best way to figure out how to improve her glider?
What is She should test one independent variable at a time.
500
Juanita already has a control group. What is it?
What is her control group was the first ten test flights.
500
Examine Juanita's data table. Find the unusual values and explain why they stand out from the others.
What is trials 4 and 5 are drastically different because the clip could have moved or the wing could have broke.