1. Complete a Data Table (p.3) Class Results: Avg Pulse Rates Pulse Rate Per Minute (range) <5151-6061-7071-8081-90>90 # of Students in Range

2. Histogram Title: Avg Pulse Rate Range <5151-6071-8061-7081-90 >90 Label the y-axis

3. p.4 Yes. Most students fall in the range of 61- 80. No. We would need to collect data of heights in order to make a connection with pulse rates. Does weight affect pulse rate? Yes.Yes. After exercise, more CO2 builds up in the blood making your heart beat faster to get rid of it. Also, your cells need O2.

4. p.5 One person may have stronger muscles than another My muscles got tired. They became fatigued because lactic acid started to build up.

5. p.7 Which of the two students do you agree with? ________ How could you find out for sure which claim is correct?

6. p.6 1.A higher pulse rate means that blood is moving more rapidly throughout the body. 2.The respiratory system takes in O2 and lets out CO2. These gases are transported around the body from the lungs to the cells by the circulatory system. 3.They could conduct a controlled experiment

7. p.6 4.You would need to compare the pulse rates of 1 group who watched a sporting event to another group who watched a less exciting show and see if a significant difference exists between the 2 groups. 5.If you rest beforehand, your body will not have wastes and lactic acid build up in the cells making you able to increase your clothespin-squeezing rate,