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Definitions
Definitions
Defintions
Questions
NJ Ask Practice
100
The degree of conformity if a measure to a standard or a true value.
What is accuracy
100
The factor in an experiment that changes as a result of a change in an independent variable.
What is dependent variable
100
A question used to focus the purpose of a scientific investigation and the procedures used to complete it
What is Research Question
100
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
100
1.Find the masses of four different bobs 2.Construct a table in which to record data 3.Time the duration's of one swing 4.Tie the four bobs to four strings of equal length In which order should Dietrich conduct the steps?
What is D. 2-1-4-3
200
A decision based on investigation and evidence.
What is conclusion
200
An experiment in which one independent variable is tested by keeping all other independent variables the same.
What is fair test
200
The number of observations or data
What is Sample Size
200
If you Juanita which of the three variables would you test first
What is You would test shortening the wind span first for more aerodynamics and more surface area to get more lift
200
Jack hypothesized that robins prefer large birdhouses to small ones. He built four birdhouses of different sizes to test his hypothesis. What was the independent variable in Jack's study?
What is A. the size of the birdhouse
300
A controlled variable in an experiment that is kept the same from trial to trial.
What is constant
300
An idea that can be tested by a scientific investigation.
What is hypothesis
300
An investigation in which all variable identified and reported so that the investigation can be repeated
What is Systomatic Investigation
300
Why might it be difficult to test just one independent variable at a time
What is Many variables are at work when conducting experiments it hard to name them all
300
In 1999, a team of researchers claimed that it had made a new element. Two other teams repeated the experiment but could not reproduce the results. The original team took back its claim. What do these events say about the process of scientific inquiry?
What is C. experimental results must be reproducible to be accepted as valid
400
A set of observations made in an experiment, in which the independent variable are not changed, to be sure that the dependent variable remains the same also.
What is control group
400
A variable that is isolated for study in an experiment and that the experimenter manipulates
What is an independent variable
400
A factor that changes in an experiment
What is Variable
400
What parameters were held constant in an annessas experiment
What is Liver mass, test tube size, and enzyme amount
400
Lewis wanted to know whether a new brand of shoe could make a basketball player jump higher. He found 18 basketball players who started using the shoes this season and measured how high each player could jump in the new shoes. What error did Lewis make in his investigation.
What is B- There was no control group for the study.
500
A variable that is kept the same from trial to trial
What is controlled variable
500
Having the ability to get similar results from multiple trials
What is Reproducable
500
Name two things Juanita must do to know the distances of the shortest and longest flights
What is She must measure the distance of each foot and record each distance she measures
500
How does a scientific community confirm that a scientist work is valid
What is Other scientists carry out the same experiment to see if they get the same result
500
States Paco`s hypothesis. Then identify the independent variable, the dependent variable, and one variable that must be held constant.
What is if a new baseball has more bounce, then the ball will go farther. The independent variable is the new baseball and the dependent variable is the distance the ball travels and the home runs. Constant is the bat size.