Definitions
Definitions
Definitions
Questions
Questions
100
The degree of conformity of a measure to a standard or a true value.
What is accuracy?
100
An experiment in which one independent variable is tested by keeping all other independent variables the same.
What is a fair test?
100
Name two things Juanita must do to know the distances of the shortest and longest flight.
She should conduct her trials in a gym where the wind remains constant.
100
What is Juanita control group?
Her control group was the first ten flights.
200
A decision based on investigation and evidence.
What is conclusion?
200
An idea that can be tested by a scientific investigation.
What is a hypothesis?
200
An investigation in which all variables are identified and recorded so that the investigation can be repeated.
What is systematic investigation?
200
Juanita considers shortening the wings, adding wait near the nose, and lengthening the tail at the same time. Why do you think Juanita decided that this was not the best way to figure out how to improve her glider.
Many variables are at work when conducting experiments, its hard to name them all.
200
What is Juanita's independent variable?
Juanita's independent variable is the different clips that she used.
300
A controlled variable in an experiment that is kept the same from trial to trial.
What is a constant?
300
A variable that is isolated for study in an experiment and that the experimenter manipulates.
What is an independent variable?
300
A factor that changes in an experiment.
What is variable?
300
If you were Juanita, Which of the three variables would you test first on the glider?
You should always test one variable at time. I would test shortening the wingspan first for more aerodynamics and more surface area to get more lift.
300
What is Juanita's dependent variable?
Her dependent variable is the distance the glider travels.
400
A set of observations made in an experiment, in which the independent variables are not changed, to be sure that the dependent variable remains the same also.
What is a control group?
400
Having the ability to get similar results from multiple trials.
What is reproducible?
400
What is Juanita's hypothesis?
If she puts a 25 gram clip on the glider then it will move farther.
400
Suggest how Juanita can keep factors such as wind speed and direction constant in her trials?
She should conduct her trials in a gym where wind remains constant.
400
Why is it important that Juanita writes down the location of the clip and the result each time?
She must match the location of the clip to the length of the flight and recording it will let her know which location of the clip would work best.
500
The factor in an experiment that changes as a result of a change in an independent variable.
What is a dependent variable?
500
A question used to focus the purpose of a scientific investigation and the procedures used to complete it
What is a research question?
500
Juanita's new hypothesis, "putting a 25 gram mass behind the nose makes the the glider fly the farthest." How can you test this.
She can reapeat the trails again.
500
Why might it be difficult to test just one independent variable at a time? Use the example of Juanita and her glider.
There are a lot of factors at work so you should test one variable at at time, like shortening the wingspan or adding weight to the nose.
500
Suggest one way that Juanita can test the accuracy of the data set for when the clip is 5 cm behind the nose.
She can run the trials again and vary the amount of mass.
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