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INFORMATION AND COMMUNICATION

TECHNOLOGY IN SCIENCE

(SSI 3013)

REPORT

REGULATION OF HUMAN BODY TEMPERATURE:

LOSS OF HEAT THROUGH SWEAT PRODUCTION

(Heat loss measured at fingertips)

Name Matric No.

Sandra Meru D20091035087

Juvita Binti Soumin D20091035100Ng Seng Wei D20091035105

Nordiyana Binti Mohd Zom D20091035124

Hanida Binti Nor Azlan D20091035129

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Objective: To determine the changes in temperature and humidity of humans body through

sweat production

Introduction

Exposure of our body to high temperature can lead to an increase in body temperature.

Blood vessels near the skins surface dissipate heat well. Therefore blood flow in the skin rises in

cases on increased body temperature. To help heat dissipation, sweat production increases

significantly. It is done by over 3 million sweat glands spread to keep body temperature, but it

can lead to dehydration if water loss is not replaced by drinking. In this experiment we measure

the effect of increasing hand temperature on heat dissipation through sweat production.

Materials

Plastic glove, rubber band, humidity sensor, temperature sensor, data logger

Procedure

1. Set up the data logger.2. Connect the humidity and temperature sensors to the data logger starting from right.3. Set the range of data logger. The rate is 10 per seconds and the sample is 2000.4. Hold the temperature sensor with your fingertips for 5 minutes. Record the reading.5. After that, cover your hand by using glove together with the humidity sensor while

holding the temperature sensor for 10 minutes. Cover the end of the glove tightly by

using rubber band. Record the reading.

6. After 10 minutes, remove the glove and let your hand at room temperature for another 5minutes. Record the reading.

7. Connect the data logger to the computer. A graph and a table will be shown on the screenof the computer.

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Results

Table for temperature and humidity over time.

Graph of temperature and humidity against time.

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Discussion

Based on the graph, the temperature is inversely proportional to the humidity. When the

temperature increases, the humidity decreases. Before the hand is covered by the glove, the

temperature is high because the temperature of the surrounding. Temperature is the amount of

thermal energy while humidity refers to the amount of water vapour in the air. The humidity

lowering as the temperature increases because more water can be evaporated since there is more

thermal energy available to do the work of evaporation. When the hand is covered, the

temperature increases for a while thus makes the hand sweats to reduce the temperature. As the

hand sweats, the humidity in the glove increases while the temperature becomes lower. When the

glove is removed, the temperature increases again because of the surrounding temperature and

hence lowering the humidity.

Conclusion

In conclusion, the humidity depends on the temperature of the surrounding.