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This depends on the thermometer model.
The first thermometer was a tube filled with water and air.
The thermometer's reading of the point the liquid boils may not be accurate.
We still use colored alcohol for our liquid in everyday thermometers.
Ethanol would be better because it has a smaller range.
Thermometer
Mercury the liquid inside thermometer is mercury.. but it is called thermometric liquid.
When the liquid in the thermometer gets warmer it expands.
Because that will mess with the temperature reading on the thermometer. And it would be dangerous if the thermometer is broken as there are dangerous chemicals (i.e.mercury) inside.
what do they use for the liquid in glass ball thermometer
thermometer
The liquid is an antiseptic used to sterilise it. You wouldn't want to be contaminated with any bacteria or viruses from the last person who used the thermometer, would you?
Water Temperaure cools
yes, indeed thermometer makes life better. if there was no thermometer people would not know about the temperature varying in their body and if they had fever they would not be able to know and cure it. hen of course it would lead to deaths.therefore without thermometer there would have been thousands of deaths. there are different types of thermometer not only for body temperature but also for the surroundings.
As the liquid in the thermometer is heated it expands, and the only way the expanding liquid can go is upward. As the liquid in the thermometer cools, it will contract, and the liquid will fall back down into the resevoir, causing the column of liquid to move downward.
In a thermometer is a liquid metal called Mercury, so the liquid expands when it is heated up.
the liguid inside the thermometer is Mercury.