Day 5 Quiz

Jenny smacks the softball against her bat and succeeds in sending the ball flying toward far outfield. As she runs the bases, which of the following will happen to her vital signs?Blood pressure will increase.Pulse will increase.Respiratory rate will increase.Blood pressure will decrease.Pulse will decrease.Respiratory rate will increase.Blood pressure will increase.Pulse will decrease.Respiratory rate will decrease.Blood pressure will decrease.Pulse will decrease.Respiratory rate will decrease. Option 1 Option 2 Option 3 Option 4 A teacher wants to find out if playing a different bell will make the kids go to class faster. After her first class, she asks the office to play the normal bell and she records how many minutes it takes students to clear the hallways. After her second class, she asks the office to play the new bell and records how many minutes it takes for students to clear the hallway. Which of the following is the independent variable? The passing period with the regular bell The passing period with the new bell The minutes it takes for students to clear the hall The amount of passing periods A group of students performed an experiment to see whether listening to music for one minute would lower the pulse of a person.They had one student sit in a chair for one minute and then measured their pulseThey had one student sit in a chair and listen to rock music and then measured their pulse for one minute.They analyzed their results and since the pulse of the student was lower when listening to the music, they concluded that rock music does lower pulse.What was wrong with the above experiment? They didn’t include a control group. They didn’t include multiple trials. They included more than one independent variable. Write a clear experimental procedure for the experiment in the question above, so that is is repeatable, and produces valid and reliable results. Experimental procedure should include:A controlSteps that are clear and specific so another scientist could repeat the experiment.Multiple Trials