can somebody tell me how the mercury level in the thermometer rise as there is air in the circled area
Answers
Answer:
Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion. ... It also has a high boiling point which makes it very suitable to measure higher temperatures. Also, it has a shiny appearance and doesn't stick to the glass surface of glass.
Explanation:
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Answer:
A thermometer has temperatures marked at some distance from one another and a line drawn in the centre in which the mercury rises. Mercury is a metal in liquid form. It has a lustre and is used to check body temperature. It is filled in a thermometer.
When we put the thermometer near our head the mercury level rises. And we get to know our temperature. The mercury stops rising at a certain temperature. The temperature on which the mercury stops is said to be our body temperature. The part that remains is not included in our body temperature.
Mercury also has chemicals in it so it is advised not to put the mercury inside our mouth as it can easily break.