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WorksheetsMaking Connections State Lab
Total questions: 25
Worksheet time: 25mins
In the lab activity Making Connections, an experiment was designed to test the effect of exercise on the ability to squeeze a clothespin. The number of times the clothespin was squeezed served as the
independent variable
dependent variable
hypothesis
control
Students were asked to design a lab that investigated the relationship between exercise and heart rate. Heart rate was determined by recording the pulse rate in beats per minute. The students hypothesized that increased exercise results in an increased heart rate. The class results for the experiment are shown in the graph. Students in a different science class carried out the same experiment. The data they obtained did not support the hypothesis that increased exercise results in increased heart rate. The most scientifically sound way to deal with this situation is to
write a new hypothesis
read about pulse rate in a biology textbook
have the students in both classes vote to decide which hypothesis is correct
ask students in a third class to do the experiment and see if their results support the hypothesis
The student stated that data from his experiment supported his claim that pulse rate increases when watching an exciting sporting event. State an argument for why someone might not accept his claim. According to the data table in the picture, does the student’s pulse rate fall within the normal range? Yes or No and support your answer.
Yes, It falls in the range for people older than 14.
No, — because his heart rate is below the range for his age group
Yes, His rate of 60 beats per minute puts him in the adult range.
What was the student’s resting pulse rate in beats per minute?
160 beats/min
100 beats/min
80 beats/min
69 beats/min
The student stated that data from his experiment supported his claim that pulse rate increases when watching an exciting sporting event. State an argument for why someone might not accept his claim.
All variables were controlled
The claim may not be accepted because the student did not take pulse rates before the game started.
The claim would not be accepted because the student used a large sample size of only six individuals
The claim would not be accepted because the student repeated his experiment, in order to have a larger sample tested.
Students were asked to design a lab that investigated the relationship between exercise and heart rate. Heart rate was determined by recording the pulse rate in beats per minute. The students hypothesized that increased exercise results in an increased heart rate. The class results for the experiment are shown in the graph.
Which statement is best supported by the graph?
Before exercising, the average pulse rate was 65; four minutes after exercising, the average pulse rate was 65.
After four minutes of exercising, the average pulse rate was 120; two minutes after exercising, the average pulse rate was 120.
While exercising, the highest average pulse rate was 150; before exercising, the average pulse rate was 65.
Two minutes before exercising, the average pulse rate was 80; after two minutes of exercise, the average pulse rate was 140
Identify the substance/molecule that will not diffuse.
Starch
Glucose
Iodine
Identify the substance(s)/molecule(s) that will diffuse.
Starch
Glucose
Iodine
In the Making Connections State Lab, what is the primary purpose of using a clothespin in the experiment?
To measure grip strength
To test reaction time
To evaluate endurance
To assess flexibility
Which variable is manipulated in the Making Connections State Lab to observe its effect on clothespin squeezing?
Time of day
Amount of exercise
Type of clothespin
Room temperature
In the context of the Making Connections State Lab, what does the term 'control' refer to?
The variable that is changed
The variable that is measured
The standard for comparison
The hypothesis being tested
What scientific concept is primarily being tested in the Making Connections State Lab?
Photosynthesis
Aerobic respiration
Muscle fatigue
Cell division
How is data typically recorded in the Making Connections State Lab?
Using a digital sensor
By counting repetitions
Through a survey
With a stopwatch
What is a potential source of error in the Making Connections State Lab?
Inconsistent clothespin size
Varying exercise intensity
Different room temperatures
All of the above
Why is it important to have a hypothesis in the Making Connections State Lab?
To provide a basis for predictions
To ensure accurate measurements
To eliminate all variables
To simplify the experiment
In the Making Connections State Lab, what role does exercise play in the experiment?
It is the dependent variable
It is the independent variable
It is the control variable
It is the constant variable
What is the expected outcome if exercise increases in the Making Connections State Lab?
Increased clothespin squeezes
Decreased clothespin squeezes
No change in squeezes
Variable results
Which of the following best describes the relationship between exercise and muscle fatigue in the Making Connections State Lab?
Directly proportional
Inversely proportional
No relationship
Cyclic
What is the significance of repeating trials in the Making Connections State Lab?
To increase sample size
To reduce bias
To ensure reliability
All of the above
How can the results of the Making Connections State Lab be applied in real-world scenarios?
Improving athletic performance
Designing ergonomic tools
Developing exercise programs
All of the above
What type of graph is most suitable for displaying the results of the Making Connections State Lab?
Bar graph
Line graph
Pie chart
Scatter plot
In the Making Connections State Lab, what is the dependent variable?
Number of squeezes
Type of exercise
Duration of exercise
Intensity of exercise
What is the main focus of the Making Connections State Lab?
Understanding human anatomy
Exploring chemical reactions
Investigating physical endurance
Studying plant growth
Which of the following is a controlled variable in the Making Connections State Lab?
Type of clothespin
Amount of exercise
Number of participants
Time allowed for squeezing
What is the role of data analysis in the Making Connections State Lab?
To interpret results
To form a hypothesis
To conduct experiments
To eliminate errors
