Scientific Method
What is the first step in the scientific method?
Focus Question
How many variables are manipulated during a controlled experiment?
1
What are the two types of variables stated in a hypothesis?
Independent and Dependent
Which step of the scientific method is missing: Focus Question, Background Research, _____________, Experiment, Conclusion
Hypothesis
In which step of the scientific method do you test your hypothesis?
Experiment
What are two ways we can present data from an experiment?
Data table and graphs
Putting the plant in the closet will decrease the plant's chance of living. What is wrong with this hypothesis?
The hypothesis is missing "If" and "then"
What is the responding variable or factor that may or may not change due to manipulation?
Dependent Variable
True of False: The experiment must have went wrong if the hypothesis was not correct.
False
In which step of the scientific method do you present the answer to the focus question?
Conclusion
What does DRY MIX stand for?
Dependent/Responding Variable on the y-axis, Manipulated/Independent Variable on the x-axis
Does drinking more milk make bones stronger? State a good hypothesis for this question.
If the amount of milk consumption is increased, then bone strength will increase.
What is the term we use to describe the manipulated variable or factor that the experimenter intentionally changes?
Independent Variable
The ________________ involves a series of steps that are used to solve a problem investigate a natural occurrence.
Scientific Method
How many steps are there to the scientific method?
5
Title, labeled axes, consistent increments
Does smoking more cigarettes give a person a better chance of getting lung cancer? State a good hypothesis for this question.
If the number of cigarettes smoked is increased, then the chance of getting lung cancer will increase.
In an experiment what are the variables that are not being studied that are held constant so that they do not influence the experimental outcome called?
Controls
List the independent and dependent variables in the following hypothesis. If soil temperatures rise, then plant growth will increase.
Independent: soil temperatures
Dependent: plant growth
List the steps of the scientific method.
Focus Question, Research, Hypothesis, Experiment, Conclusion
When does a key need to be included in a graph?
When more than one data set is present (i.e., two things are getting compared)
Read the following experiment and state a good hypothesis. I am doing a test to see if there is a connection between how long you run and how fast your heart beats. I will be performing an experiment where a person will run for a 1 minute and I will check the person's heartbeat. Then the person will run for 2 minutes and I will check the heart rate. I will do this up to 6 minutes and see if there is a connection.
If the amount of time running increases, then heart rate will increase.
Find the independent and dependent variables in the following experiment: If you increase the number of times you practice shooting free-throws, then you will increase your chances of making a basket every time.
Independent: practice shooting free throws Dependent: number of baskets made
Thinking about the hypothesis: If soil temperatures rise, then plant growth will increase. What might a control in this experiment be?
Using the same potting soil, making sure both plants have an equal amount of light, etc.