Question

why do we need therm
ometer to measure temperature

Answer 1

Hello there
Thermometer has Mercury in the end in which the rounded glass is highly polished.It can easily measure the heat levels exactly and perfectly without effort.
So we use thermometers to measure heat or temperature.
Hope this will help u dear☺☺

Answer 2

Mercury is resistant to the temperature.
so it can easily expand and compress as temperature change.
thermometer contains Mercury at the end of it .in thermometer -Thermo means heat and meter means measure.
as it contains Mercury ,it shows the measure of temperature.
so we need thermometer to measure temperature.
hope this answer helps u .....