Transcript Heart Rate Lab

In: Why is there a “scientific method”?
Learning goals : Students understand and use
the scientific method to do an experiment.
Success Criteria: Students know the steps of the
scientific method, and can write a proper
scientific conclusion.
Area of Interaction: Human Ingenuity
MYP Unit Question: How can the scientific
method be applied to problems that are not
scientific?
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Ask a Question
Do Background Research
Construct a Hypothesis
Test Your Hypothesis by Doing an Experiment
Analyze Your Data and Draw a Conclusion
Communicate Your Results
Heart Rate Lab
Heart Rate Lab
Problem: How does exercise affect
heart rate?
Heart Rate Lab
Problem: How does exercise affect
heart rate?
Background:
Heart Rate Lab
Problem: How does exercise affect
heart rate?
Background:
Hypothesis:
Heart Rate Lab
Problem: How does exercise affect
heart rate?
Background:
Hypothesis:
Materials:
Procedure:
1. Determine heart rate while sitting.
2. Determine heart rate while standing
3. Walk in place for 1 minute and find heart
rate
4. Jog in place for 1 minute and find heart rate.
5. Run in place for 30 seconds and find heart
rate.
6. Record all data.
Data:
Activity
Sitting (BMR)
Standing
Walking
Jogging
Running
Graph your data…
Heart Rate (BPM)
Data Analysis:
• What is your graph showing?
• Is there anything that doesn’t really fit?
Explain.
Conclusion: The purpose of this lab was to
determine the effects of exercise on heart
rate. We did this by doing a series of
activities that affected heart rate, including
sitting, standing, walking, jogging, and
running.
Conclusion: The purpose of this lab was to
determine the effects of exercise on heart rate.
We did this by doing a series of activities
that affected heart rate, including sitting,
standing, walking, jogging, and running.
The data showed that the heart rate increased
with increasing exercise, going from 66 bpm for
walking up to 106 bpm for running, so the data
did support the hypothesis.
Conclusion: The purpose of this lab was to determine
the effects of exercise on heart rate. We did this by
doing a series of activities that affected heart rate,
including sitting, standing, walking, jogging, and
running. The data showed that the heart rate
increased with increasing exercise, going from 66
bpm for walking up to 106 bpm for running, so the
data did support the hypothesis. An explanation of
the data is that as exercise increases, more oxygen
is needed by the muscles for cellular respiration to
produce more energy, so the heart must beat faster
to supply the O2 to the muscles.
Conclusion: The purpose of this lab was to
determine the effects of exercise on heart
rate. The data showed that the heart rate
increased with increasing exercise, going from
66 bpm for walking up to 106 bpm for
running, so the data did support the
hypothesis. An explanation of the data is that
as exercise increases, more oxygen is needed
by the muscles for cellular respiration to
produce more energy, so the heart must beat
faster to supply the O2 to the muscles. Some
errors may have occurred during the lab.
Since heart rate was taken by counting for 15
seconds, and multiplying by 4, there is an
error of +/- 4 bpm built in to the procedure.
Miss-counting could also have been a factor,
causing the heart rate to be higher or lower by
a few beats, but not affecting the overall
results of the experiment.
Since heart rate was taken by counting for 15
seconds, and multiplying by 4, there is an
error of +/- 4 bpm built in to the procedure.
Miss-counting could also have been a factor,
causing the heart rate to be higher or lower by
a few beats, but not affecting the overall
results of the experiment. This lab could have
been improved by using heart rate monitors
to get an exact count of beats, and by doing
several trials of each activity to find an
average heart rate for each activity.
Other questions that I have relative to this lab
are: how does activity affect blood pressure?
How does an athlete’s heart rate compare to
an average person’s heart rate? What is the
affect of age on heart rate?
• Other questions that I have relative to this lab
are: how does activity affect blood pressure?
How does an athlete’s heart rate compare to
an average person’s heart rate? What is the
affect of age on heart rate? This related to
today’s objectives by showing how to use the
scientific method and how to write a
conclusion.
Out: What is the scientific method? Don’t
make a list, just tell me what it is.