Multiple choice

A nurse is about to take the temperature of a patient. One notices that the nurse jerks the clinical thermometer well, before placing it under the tongue of the patient. Why does she jerk it?

  1. To frighten the patient

  2. To show her experience

  3. To bring down the level of mercury below 35 degrees centigrade

  4. To warm up the thermometer

  5. The jerking makes the mercury level higher
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is done to bring down the level of mercury below 35 degrees centigrade. The level of mercury was higher up due to the kink.

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