Where Is An Alcohol Thermometer Used To Measure? Ethanol-filled thermometers are used in preference to mercury for meteorological measurements of minimum temperatures and can be used down to −70 °C (−94 °F). The physical limitation of the ability of a thermometer to measure low temperature is the freezing point of the liquid used. Is alcohol
Why Does The Red Liquid Move Down The Tube When A Thermometer Is Cooled? When heated, the molecules of the liquid in the thermometer move faster, causing them to get a little further apart. … When cooled, the molecules of the liquid in the thermometer move slower, causing them to get a little closer together.
Why Does The Mercury In A Thermometer Rise? Why does mercury in a thermometer rise when the temperature goes up? In a mercury thermometer, the level of mercury rises when its bulb comes in contact with a hot object because mercury expands when the temperature is increased and hence it rises in the capillary tube.
Do Alcohol And Mercury Thermometers Read The Same? Do alcohol and mercury thermometers read the same? Mercury has a greater coefficient of thermal expansion than alcohol. This means a column of mercury will expand and rise more than a column of alcohol for the same temperature change. As a result, you can get finer readings