WorksheetsPLTW - Test 3
Total questions: 15
Worksheet time: 8mins
Scientists follow an experimental design process that includes logical, thoughtful, and clearly defined procedures, to help organize their investigations.
True
False
Which one is an example of a research question?
Does performing jumping jacks for two minutes increase respiratory rate?
Performing jumping jacks for two minutes will increase respiratory rate.
Respiratory rate
Stopwatch
Which one is an example of a hypothesis?
Performing jumping jacks for two minutes will increase respiratory rate.
Does performing jumping jacks for two minutes increase respiratory rate?
The respiratory rate of the test subjects before they performing jumping jacks.
Only people in good health, with no respiratory problems, should complete this experiment.
Choose the independent variable.
Performing jumping jacks for two minutes
Respiratory rate
Choose the dependent variable.
Performing jumping jacks for two minutes.
Respiratory rate
This is changed by the person conducting the experiment.
Independent variable
Dependent variable
Control
This is the measurable effect or response that happens when you change the independent variable.
Independent variable
Dependent variable
Control
When completing experiments, scientists use a remote control for comparison.
True
False
You should use numbers to order the steps of your experiment.
True
False
Charts and tables are good ways to capture your data and present it in a away that is easy to analyze.
True
False
You want to make sure that your results are not due to chance. For that reason, you should perform your procedure many times, collecting data for each trial. What does it mean by "each trial?"
Run of the experiment
Charts and tables
Control
Hypothesis
A statement that predicts a possible outcome of the experiment.
Hypothesis
Dependent variable
Independent variable
Control
Scientists need to design experiments that are clear, easy to follow, and easy to repeat. They also need to design an experiment that tests multiple variables at a time.
True
False
You should list equipment or materials you will need for an experiment.
True
False
Scientists may complete these steps in order or they may find that they have to return to previous steps before they can make a conclusion.
True
False
