The material conducts heat energy to the mercury when it is touched by the mercury thermometer. As mercury becomes a liquid, it starts to rise up the tube. The reading of the temperature can be taken at the place where the mercury stops.
How is a thermometer used short answer?
A thermometer is used to measure the temperature. It is possible to measure the temperature of food, water, or air. The temperature can be measured in Celsius, Fahrenheit, and kelvin. The metric system has two scales: the Celsius scale and the metric system.
How do thermometers work chemistry?
Material that expands or contracts when heated or cooled are used to measure temperature. Mercury or alcohol thermometers have a liquid that expands when heated and contracts when cooled, so the column can be shortened or lengthened as the temperature of the liquid changes.
How does a thermometer work for Class 4?
A small, hollow glass tube is used to make the thermometer. Alcohol or mercury can be found at the bottom of the tube. The liquid inside the bulb expands when it gets hotter. The liquid can move down the tube if the heat is decreased.
How does a thermometer works Class 7?
When a bulb that is a good conductor of heat comes in contact with an object, the bulb will receive heat from the object. This heat is used to cook the liquid in the thermometer.
What is temperature and how does it work?
The temperature is the measure of hotness or coldness expressed on a number of scales. The temperature shows the direction in which heat energy will flow from one body to another.
How is a thermometer used Class 5?
The tip of the thermometer can be placed under the tongue or under the armpit. The number against the point at which the mercury column stops rising is used as a body temperature indicator.
What is thermometer for Class 5?
It is possible to measure temperature with a thermometer. There are markings on the sealed tube of the analog thermometer. The temperatures are going up.