the degree of conformity of a measure to a standard or a true value
100
what is the dependent variable
the factor in an experiment that changes as a result of a change in an independent variable
100
what is research question
a question used to focus the purpose of a scientific investigation and the procedures used to complete it
100
why do you think Juanita decided that this was not the best way to figure out how to improve her glider?
she should have only tested one variable at once.
100
Dietrich designed an experiment to test the following hypothesis: The mass of a pendulum bob does not affect how long it takes the pendulum to make one complete swing. Four steps of the activity are listed below, but not in the correct order.
Find the masses of four different bobs.
200
what is conclusion
a decision based on investigation and evidence
200
what is fair test
an experiment in which one independent variable is tested by keeping all other independent variables the same
200
what is a sample size
the number of observations or data
200
If you were Juanita, which of the three variables would you test first? Why?
Controlled variable
200
In which order should Dietrich conduct these steps?
1-2-3-4
300
What is a constant
a controlled variable in an experiment that is kept the same from trail to trail
300
what is a hypothesis
an idea that can be tested by a scientific investigation
300
what is systematic investigation
an investigation in which all variables are identified and recorded so that the investigation can be repeated
300
Why might it be difficult to test just one independent variable at a time? Use the example of Juanita and her glider on your answer
You should always test one variable at a time. I would test shorting the wing span first for more aerodynamics.
300
What do these events say about the process of scientific inquiry?
If one team makes a finding, other teams will try to prove it wrong.
400
what is a controlled group
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
400
what is an independent variable
a variable that is isolated for study in an experiment and that the experimenter manipulates
400
what is a variable
a factor that changes in an experiment
400
What parameters were held constant in Annessa's experiment?
Test tube temperature and reaction duration.
400
What error did Lewis make in his investigation?
The sample size was much too small.
500
what is a controlled variable
variable that is kept the same from trail to trail
500
what is reproducible
having the ability to get similar results from multiple trials
500
Name two things Juanita must do to know the distance of the shortest and longest flights
measure the distance of each flight and record each distance she measures
500
How does the scientist's community confirm that a scientist's work is valid?
Scientists know that anything written in a textbook is valid.
500
State Paco's hypothesis. Then, identify the independent variable, and one variable that must be held constant in Paco's experiment.