EVERYDAY SCIENCE - HEAT

Question 2

Ace loves playing football but he has mild anhidrosis. Anhidrosis is a medical condition in which a person cannot perspire normally. Perspiration produces sweat on the skin and helps to regulate the temperature of the body. Because of this condition, Ace cannot play too football for too long.

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Answer 1

Fill in the blanks with the keywords provided below.
[temperature] • [37] • [pushes] • [30] • [hotter] • [evaporates] • [water vapour] • [water]

a) How does perspiration help keep the body cool during exercise?

Answer:

Perspiration allows sweat to form on the human skin. Sweat contains which gains heat from the body and . Heat is taken away from the body as the goes into the surrounding air.


b) Explain why Ace’s condition could cause him to suffer heat injuries if he takes part in vigorous activities.

Answer:

His body will increase during vigorous activities. This is because the excess heat generated by the body during exercise cannot be lost to sweat.


c) After a moderate game of soccer, Ace stood under a fan to cool himself down.
Explain why wind can help a person to cool down.

Answer:

Heat flows from a place to a colder place. The wind carries air which is at oC. His body, which is at oC, will lose heat to the air. After the air gains heat from the body, the wind away the warm air and replaces it with cooler air.




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“Some animals such as dogs pant to cool their body down! Find out how this enables their body temperatures to be lowered on a hot day or when they exercise.”