Science lab report

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Science lab report

  1. 1. Name: Chang SunPartners: Dongmin, JessicaDate of experiment: 13/2/2011 Heart Rate LabAim:The aim of experiment is to find out how different kinds of exercise affect the heartrate.Hypothesis:Running around the track will increase the heart rate more than walkingaround the track, because running makes us tired and walking makes us nothing.Variables: Independent variable: Type of exercise: Walking vs. Running around the track, It will be changed by alternating between walking and running. Dependent variable: Heart rate after exercise, it will be measured it by measuring with stopwatch in beats per minute. Control variables: Control variable 1: Same temperature, it will keep it the same by doing the exercise in the same day. Control variable 2: Same person, it will keep it the same by using the same test subject. Control variable 3: Same equipment, it will keep it the same by using the same stopwatch.Materials: Stopwatch Track Test Subject
  2. 2. Method: 1. Get Test Subject 2. Take out stopwatch and make test subject sit still 3. Take the heart rate of the test subject for 1 minute 4. Repeat step 3 three times 5. Record the average of these three results in Data Table 6. Make test subject walk 1 lap around the track 7. Measure their heart rate as soon as they finish 8. Wait until their heart rate goes back to average resting heart rate 9. Make test subject run around the track 10. Measure their heart rate as soon as they finish 11. Repeat steps 6-10 three times to obtain average heart rate after exercise 12. Record all data in Data tableResults:Data table 1: Running walking heart rate record table (beats per minute) Trial 1 Trial 2 Trial 3 Average Running 159 130 160 149.67 Walking 110 118 120 116Data table 2: Resting Heart rate (beats per minute)Trial 1 Trial 2 Trial 3 Average96 83 87 88.7
  3. 3. Graph 1: Running, walking and resting heart rate Average of Running and Walking and Resting heart rate Resting Activities Walking Running 0 20 40 60 80 100 120 140 160 Heart rate ( beats per minute)Conclusion:The hypothesis was correct. Running heart rate was higher than walking heart rate. Thedata shows that as the test subject runs or walks, running heart rate was higher thanwalking heart rate. This shows that the hypothesis was correct. When the test subjectruns, the test subject gets tired, so the heart rate goes up. When the test subject walks, thetest subject doesn’t get tired, and the test subject is normal. Therefore, the heart rate goeslittle. The data is believed to be reliable, because all people’s heart rate goes up whenpeople run. As the same way, people’s heart rate goes up little when people walk too. Itwas difficult to measure the heart rate after the test subject finished running or walking.The reason why is that the test subject came in different time in each trial, so it was kindof difficult to measure the heart rate after the test subject finished running or walking.Evaluation:One part of the method that went really well was setting up for experiment. Some thingsthat could be changed for the next time are place so that experiment can be moreinteresting. Another thing that could be changed is to add more test subject. It would bemore interesting to compare test subject 1 and test subject 2. In a future experiment, theinput variable could be the listening to music and dance. It could make the heart rate goesup higher and it’s fun to listen to music and dance.
  4. 4. Criterion B: Inquiring and Designing Score Problem Hypothesis Variables Method Able to Able to design a logical, Able to create and Able to explain how to identify a complete and safe explain a testable manipulate the problem or method in which the question and hypothesis using variables and describe student selects 4 correct scientific how sufficient, relevant justify the appropriate materials reasoning data will be collected selection and equipmentAble to outline Able to describe how to Able to design a Able to create and a problem or manipulate the complete and safe explain a testable question and hypothesis using variables, and identify method and select 3 justify the how sufficient, relevant appropriate materials scientific reasoning selection data will be collected and equipment Able to identify how to Able to design a safe Able to create aAble to outline manipulate the method in which testable hypothesis a problem or using scientific variables, and outline materials and 2 question how relevant data will equipment have been reasoning be collected selectedAble to state a Creates a testable Attempts to design and problem or hypothesis Identifies variables experiment 1 question The student does not read a standard described by any of the descriptors above 0 Criterion C: Processing and Evaluating Tables / Score Conclusion Hypothesis Method Improvements Graphs Collects, Accurately Evaluates the Evaluates the Explains organizes, interprets data validity of a validity of the improvements ortransforms and and explains hypothesis based method based extensions to the presents data results using on the results of a on the results method that would 4 in numerical correct scientific of a scientific benefit the scientific and/or visual scientific investigation investigation investigationforms correctly reasoning Collects, Accurately Describes the Describes the Describes organizes and interprets data validity of a validity of the improvements or presents data and explains hypothesis based method based extensions to the in numerical results using on the results of a on the outcome method that would 3 and/or visual scientific scientific of a scientific benefit the scientificforms correctly reasoning investigation investigation investigation Identifies the Identifies the Identifies Collects and Accurately validity of a validity of the improvements or presents data interprets data hypothesis based method based extensions to the in numerical and explains on the results of a on the outcome method that would 2 and/or visual results scientific of a scientific benefit the scientificforms correctly investigation investigation investigation Outlines the Outlines the Collects and validity of a validity of the Outlinespresents data Interprets hypothesis based method based improvements or in numerical data on the results of a on the outcome extensions to the 1and/or visual scientific of a scientific method forms investigation investigation Does not reach a standard described by any of the descriptors above 0
  5. 5. You didn’t site any specific data in your conclusion.

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