Sweating and Heat Loss Investigation
Aim
To find out whether heat is lost faster over a sweaty body compared to
a dry body.
Apparatus
2 Boiling tubes 47ml max
2 Measuring jug 50ml max
A Beaker 250ml max
2 thermometers
Paper towels
A kettle to boil water
A stopwatch
2 magnifying glasses (8x)
2 corks with a small hole through the centre
A test tube rack
Preliminary work
In my preliminary work, I need to find out how much water to use,
whether the tissue should be wet with hot/cold water, how often the
readings should be taken, how accurate should the readings be, how
many readings should be taken and what my starting temperature should
be. My results are as follows.
Starting temperature of 40°c
Time (secs)
Wet towel (°c)
Dry towel (°c)
30
36
38.9
60
35
38.5
90
34
37.9
120
33.9
37.5
150
33
37
180
32.6
36.9
210
32.3
36.8
240
31
36.5
270
30.4
36
300
30.3
35.9
Starting temperature of 65°c
Time (secs)
Wet towel (°c)
Dry towel (°c)
30
51.1
53
60
48.2
51.9
90
46.4
51
120
46
50
150
44.3
49
180
42.9
48.4
210
42.6
46.9
240
41.7
48
270
40.2
47.5
300
39.3
47
Starting temperature of 60°c
Time (secs)
Wet towel (°c)
Dry towel (°c)
First, 100 mL of regular deionized water was measured using a 100 mL graduated cylinder. This water was then poured into the styrofoam cup that will be used to gather the hot water later. The water level was then marked using a pen on the inside of the cup. The water was then dumped out, and the cup was dried. Next, 100 mL of regular deionized water was measured using a 100 mL graduated cylinder, and the fish tank thermometer was placed in the water. Once the temperature was stabilizing in the graduated cylinder, the marked styrofoam cup was filled to the mark with hot water. Quickly, the temperature of the regular water was recorded immediately before it was poured into the styrofoam cup. The regular/hot water was mixed for a couple seconds, and the fish tank thermometer was then submerged into the water. After approximately 30 seconds, the temperature of the mixture leveled out, and was recorded. This was repeated three
Over a three week period a test subject was instructed to come to the exercise physiology lab once a week. The purpose of the first week was to determine the baseline test data for the participant. During this first week, the subject was asked how many hours of sleep they had gotten the night before and how much they weighed. The subject was then instructed to put on a heart monitor and wear an O2 apparatus and begin running on a treadmill. This treadmill was set at zero incline for the beginning of the run until three minutes had passed. At the three minute mark the incline increased by 2.5%. After this the incline was continuously increased by 2.5% every two minutes. During this process, the VO2 and RER exchange rate of the subject was being tracked through the O2 apparatus. Their heart rate was recorded every 15 seconds. In addition, the subject was asked their perceived exertion at every increase in incline. The subject continued to run until they could not run anymore, at this time they would hop off the treadmill.
The Gift of Sweat” by Rebecca Brown, tells the story of a man with a mysterious disease. The story is told from what we presume is one of the man’s friends. We read about her routine with Rick, the man that is ill, and his happenings. This story is intriguing because it is very poignant and mysterious. This makes us wonder about this character's lives and why the outcome of the story is what it ended up to be.. What makes this story so pleasurable is the writing style. The way the author made us predict what Rick’s illness was, made the story that much more interesting. The way Brown played with context clues made the readers interested, it made the readers want more and figure out more about the characters, and the story itself.
By adding fresh cold water it should cool the copper calorimeter. By making sure I do these checks before I do the experiment means that I should be able to get accurate results as the test will have been run fairly and hopefully successfully as there should not have been anything gone wrong. To make sure all the measurements are correct, I will also run checks. These checks when recording the data are. Make sure to check the thermometer to see what temperature the water is at the start, so I am able to see what it has to be when its been heated by 10 degrees.
Tf-Ti). Next, subtract the initial temperature, 25 degrees from the final temperature, 29 degrees putting the change in temperature at 4 °C. To calculate the heat absorbed by the water in calorimeter, use the formula (q = mCΔT). Plug in 50 mL for (m), 4.184 J for (C) and 4 °C for the initial temperature (ΔT), then multiply.
the water baths I think were accurate enough but having two thermometers in each bath maybe would have helped to hold the temperature readings more accurately. We were not given any instructions either to shake or not to shake the test tubes with the coloured solutions before inserting them in the spectrophotometer to read the absorbance. By shaking each test tube a certain number of times before putting it in the spectrophotometer could have improved the accuracy of the absorbance of the solutions.
Repeat using the SAME metal sample, but instead with the colder water. Do not record the temperature of the cold water in the calorimeter until immediately before adding the heated metal.
Then, repeat steps 7-11 another 4 times but with the room temperature water. For the room temperature water just leave it in the room but try not to change the room’s temperature. 15. Try to put all your recorded data into a table for organization 16. Repeat the entire experiment for more reliable data.
The Effects of Dietary Acid Load on Exercise Metabolism and Anaerobic Exercise Performance, outlines experimentation designed to determine how systemic pH affects exercise metabolism and anaerobic exercise performance. Since systemic pH can be varied through diet, determining how exercise metabolism as well as anaerobic exercise performance changes in response to systemic pH can help athletes make more educated decisions on dietary consumption before competitions. Caciano, Inman, Gockel-Blessing, and Weiss sought to measure these affects by conducting a cross-over trial, using randomized and counterbalanced intervention of participants’ diet. A low-potential renal acid load (PRAL) diet is alkaline promoting, and includes foods such as fruits
- Temperature was measured after and exact time i.e. 1 minute, 2 minutes, 3 minutes.
In part one of this calorimetry experiment, the heat gained by the system, the sausage, was lost by the surroundings, the water. This relates to the 1st Law of Thermodynamics that states “energy can neither be created nor destroyed”. In parts two and three of this experiment, the heat generated by the reaction was transferred to the solution. The first the first calculation I had to perform was finding the specific heat capacity of the sausage by using the formula, m_water C_(p,water) 〖ΔT〗_water+m_sausage C_(p,sausage) 〖ΔT〗_sausage=0 that is derived from the formulas q_(water=) 〖-q〗_sausage and q=mC_p ΔT. This value, which is the amount of energy in Joules that it takes to raise one gram of the sausage by 1°C, was then multiplied by the number
I have been playing sports my whole life. I started cheerleading when I was in first grade, played softball until fourth grade, and then started playing basketball. I played basketball non-stop from the fourth grade all the way up until senior year of highschool. I played both travel basketball, school basketball, and I was even training during the off season. I have always known when I was not able to play sports anymore, I still wanted to be surrounded by them. I did not care what sport it was. I had switched back and forth between many majors during high school including athletic training, coaching, and physical therapy. Junior year of high school I had a teacher named Mrs. Mercer. She was an incredible teacher that taught both sports medicine
According to the Law of Conservation of Energy, energy cannot be created nor destroyed, it may only be converted from one form of energy and transferred from one mass to another. Through conduction, convection and radiation, heat is able to travel from one place to another. Convection often occurs in fluids where the fluid carries heat from one place to another. Conduction is the transfer of energy within a substance and does not require any movement of a substance. Radiation is the absorption or giving off of electromagnetic waves. Heat transfer is the movement of thermal energy from one object to another object of different temperatures.
Heat energy is transferred through three ways- conduction, convection and radiation. All three are able to transfer heat from one place to another based off of different principles however, are all three are connected by the physics of heat. Let’s start with heat- what exactly is heat? We can understand heat by knowing that “heat is a thermal energy that flows from the warmer areas to the cooler areas, and the thermal energy is the total of all kinetic energies within a given system.” (Soffar, 2015) Now, we can explore the means to which heat is transferred and how each of them occurs. Heat is transferred through conduction at the molecular level and in simple terms, the transfers occurs through physical contact. In conduction, “the substance