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Definitions 1
Definitions 2
Definitions 3
Open-Ended
Multiple Choice
100
an investigation in which you have to go through different trials and identify all varible
What is systematic investigation
100
the degree of conformity of a measure to a standard or a true value
What is accuracy
100
the number of observations or data
What is sample size
100
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?
What is Juanita must match the location of the clip to the length of the flight and record keeping will let her know which location of the clip would work.
100
Dietrich designed an expriment to test whether the weight of a pendulum bob effects how long it takes to make one full swing. His four steps are listed below, but not in the right order. 1. Find the masses of the bobs 2. construct a table to record the data 3. time the duration of the swing 4. tie the four bobs to four strings of equal length How should it be ordered?
What is 2-1-4-3 should be the order of the steps
200
that variable that always changes
What is independent variable
200
a decision based on investigation and evidence
What is conclusion
200
a controlled variable in an experiment that is kept the same from trial to trial
What is constant
200
When Juanita is testing her flights with the clip, why is it important that she writes down the location of the clip and the results each time? Suggest one way that she can test the accuracy of the data set for when the clip is 5 centimeters behind the plane's nose.
What is according to Juanita's data graph it is important to write down the location of the clip and the results because the clip could have moved or the wing could have broke. She can run the trials again and vary the amount of mass to test the accuracy of the data set when the clip is 5 centimeters behind the plane's nose.
200
Jack hypothesized that robins prefer larger bird houses. He built four different sized bird houses to test his hypothesis. What was his independent variable for this experiment?
What is the size of the bird house was the independent variable in the experiment.
300
the variable that may or may not change
What is dependent variable
300
an idea that can be tested by a scientific investigation
What is hypothesis
300
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 control group
300
Why is it important never to return chemicals used in an experiment to their original containers?
What is chemicals that have been used outside their container may become contaminated with other chemicals.
300
In 1999 a team of researchers claimed that they had found a new element. Two other teams repeated the experiment but could not reproduce the results. What does this say about the experiment?
What is this shows that experimental results must be reproducible to be considered as valid.
400
factors that should be kept the same (scientists also call them constants)
What is control variable
400
having the ability to get similar results from multiple trials
What is reproducible
400
a factor that changes in an experiment
What is variable
400
Annessa designed an experiment to study how temperature affects the rate at which enzyme digests 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 constant in Annessa's experiment?
What is liver mass, test-tube size, and enzyme amount
400
Lewis wants to know whether a new brand of shoe could make a basketball player jump higher. He found 18 players who started using the shoes and measured how high they could jump in the new shoes. What should Lewis make sure he doesn't forget to do in his experiment?
What is Lewis should make sure he doesn't forget to make a control group.
500
makes a change in just one independent variable at a time to see how the change affects the dependent variable
What is fair test
500
a question used to focus the purpose of a scientific investigation and the procedures used to complete it
What is research question
500
After Juanita threw two gliders she needs to know the distance of the shortest and longest flight. How can she calculate this? If you were Juanita which of the three variables (wingspan, weight and tail length) would you test first, why? It might it be difficult to test only one independent variable at a time, so what should Juanita do?
What is to calculate the shortest and longest flight Juanita needs to measure the distance of each flight and record each distance she measures. Always test one variable at a time. If I were Juanita, I would make the wing span shorter first for more aerodynamic. She should conduct her trials in a gym where wind remains constant to be sure that she only tests one independent variable at a time.
500
How does a scientific community confirm that a scientists work is valid?
What is other scientist carry out the same experiment to see if they get the same results.
500
Paco wants to find out whether the baseballs used in his league fly higher than the baseballs used the year before. He has noticed that many more home runs have been hit this year than last year, so he thinks the new balls have more bounce. Paco wants to design an experiment to test this idea. State Paco's hypothesis, identify the independent variable, identify the dependent variable, and identify one variable that must be held constant in Paco's experiment.
What is Hypothesis- If a new baseball has more bounce then it will fly further and lead to more home runs. Independent Variable- the new baseball Dependent Variable- the distance the ball goes or the number of home runs Constant- type of bat, same pitcher, wind, and person batting