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Definitions 1
Definitions 2
Definitions 3
Question Review
NJ ASK Review 2
100
What is accuracy
What is the degree of conformity of a measure to a standard or a true value
100
What is dependent variable
What is the factor in an experiment that changes as a result of a change in an independent variable
100
What is research question
What is a question used to focus the purpose of a scientific and the procedures used to complete it
100
Liver mass, test-tube size, and enzyme amount
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 to different temperatures introduction equal amounts of enzyme to each tube and measure the duration of the chemicals reaction. What parameters were held constant in Annessa's experiment?
100
If I put 25 gram clip in a certain spot along the glider then it will glide farther
Juanita chooses her independent variable she will change the weight along the body of the glider she will put a 25 gram clip five times the along the bottom and throw the glider 5 times the she will move the clip to a different spot on the body and throw the glider 5 more times. Juanita's hypothesis (her testable idea) is now more focused. Restate it.
200
What is conclusion
What is a decision based on investigations and evidence
200
What is fair test
What is an experiment in which one independent variable is tested by keeping all other independent variables the same
200
what is sample size
What is the number of observations or data
200
Other scientists carry out the same experiment to see if they get the same result
How does the scientific community confirm that a scientist's work is valid?
200
The independent variable is the 25 gram clip
What is Juanita's independent variable?
300
What is costant
What is a controlled variable in an experiment that is kept the same trial to trial
300
What is hypothesis
What is an idea that can be tested by a scientific investigation
300
What is systematic investigation
What is an investigation in which all variables are identified and recorded so that the investigation can be replaced
300
1. Construct a table in which to record data 2. Find the masses of four different bobs. 3. Tie the four bobs to four strings of equal length. 4. Time the duration of one swing
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. In which order should Dietrich conduct these steps?
300
The dependent variable is the distance the glider travels
What is Juanita's dependent variable?
400
What is control group
What is 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 independent variable
What is a variable that is isolated for study in an experiment and that the experimenter manipulates
400
What is variable
What is a factor that changes in an experiment
400
the size of the birdhouse
Jack hypothesized that robins prefer large birdhouse to small ones. He built four birdhouses of different sizes to test his hypothesis. What was the independent variable in Jack's study?
400
More trials are necessary for Juanita to determine the best place to add weight to the glinder
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 this method produce a sufficient sample size? Explain your answer
500
What is controlled variable
What is a variable that is kept the same from trial to trial
500
What is reproducible
What is having the ability to get similar results from multiple trials
500
There was no control group for the study
Lewis wanted to know whether a new brand of shoe could make a basketball played 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?
500
Experimental results must be reproducible to be accepted as valid.
In 1999, a team of researches 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?