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Defanitions
Defanitions
Defanitions
Questions
Nj Ask Practice
100
The degree of conformity or a measure to standard or a true value
What is accuracy
100
A decision based on an investigation and evidence
What is conclusion
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 u think Juanita decided that this was not the best way to figure out how to improve her glide
What is she should test one independent variable at the same time
100
Annessa designed an experiment to study how temperature affects the rate at which an enzyme digests a protein. She put equal masses of liver into four equal-sized test tubes, brought the test tubes to different temperatures, introduced equal amounts of enzyme to each tube, and measured the duration of the chemical reaction. What parameters were held in Annessa's experiment?
What is B. liver mass, test-tube size, and enzyme amount
200
A controlled variable in an experiment that is kept the same from trial to trial
What is constant
200
A set of observations made i an experiment, in which the independent variable are not changed, to be sure that they dependent variable remains the same.
What is control group
200
The number of observations or data
What is sample size
200
If you were Juanita, which of the three variables would you test first? why?
What is I would add weight first so that the plane can glide easier and steadier.
200
How does scientific community confirm that a scientists work is valid?
What is A. other scientists carry out the same experiment to see if the get the same result.
300
A variable kept the same from trial to trial
What is controlled varable
300
The factor in they experiment that changes as a result of a change in an independent variable.
What is dependent varable
300
An investigation in which all variables are identified and recovered so that the investigations can be repeated
What is Systematic Investigations
300
Suggest how Juanita can keep factors such as wind speed and direction consistent in her trials.
What is She should do her experiment in the gym, where the wind will remain constant.
300
Dietrich designed a experiment to test the following hypothesis: The mass of a pendulum bob does not effect 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 1. Find the masses of four different bobs. 2. Construct a table in which to record data 3. Time the duration of one swing 4. Tie the four bobs to four strings or equal. In which order should Dietrich conduct these steps?
What is B. 2-4-3-1
400
Having the ability to get the same results
What is reproducible
400
An idea that can be tested by a scientific investigations
What is hypothesis
400
A factor that changes in an experiment
What is a variable
400
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 She only had ten test flights.
400
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
500
An experiment in which one independent variable is tested by keeping all other independent variables the same.
What is fair test
500
A variable that is isolated for study in an experiment and that the experiment manipulates
What is Independent Variable
500
Name two things Juanita must do to know the distance of the shortest and longest flight.
In order for Juanita to know the distances of the longest and shortest flights she must record the distances.
500
Juanita already has a control group. What is it?
What is Her control group was the ten test flights.
500
In 1999, a team of researchers claimed that it made a new element. Two other teams repeated the experiment but could not repeat 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.