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Please I need help with this question (see image).
Show workings if necessary​

Please I need help with this question (see image). Show workings if necessary​-example-1
User Dellanira
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1 Answer

4 votes

Question :

When an athlete perspires after running

  1. Evaporation occurs and helps to cool the body.
  2. Convection cools the body.
  3. The body absorbs cold from the surrounding air.
  4. Heat is conducted away from the body.

Answer :

When an athlete perspires after running evaporation occurs and helps to cool the body.

Correct option is A.

Step-by-step explanation :

When an athlete perspires after running then sweat evaporates and we know that evaporation causes cooling as evaporation requires heat energy. The required heat energy is taken away by the molecules of sweat when they convert from liquid into gas, and this causes cooling on the surface of body. That's why it helps to cool the body.

User Jgre
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