Question

The instrument used for measuring the temperature is called a:
A) Voltmeter
B) Thermometer
C) Calorimeter
D) Ammeter

Answer 1

Recall that the temperature is a physical quantity that is used to measure the hotness or coldness of a body. It is basically a measure of the kinetic energy of the molecules of a substance when the substance is provided with energy. The faster the molecules move, the higher is the temperature of the body. It shows the flow of energy.

Complete answer:
An instrument that is used to measure temperature is known as a thermometer. A thermometer is a device that can measure the temperature of a solid, liquid or a gas. It consists of a glass tube also called capillary tube that contains a liquid known as mercury. The liquid expands on heating while contracts on cooling.
The other parts of a thermometer are a glass bulb, scale lines and expansion chamber. The temperature of a body is measured in Celsius, Kelvin and Fahrenheit. These are the three most common units used to measure temperature.

Option B is the right answer.

Note: It is important to note that the thermometer is of many types. Some of its types are- clinical thermometer, laboratory thermometer, digital thermometers. The thermometers that are used by doctors or are available in our homes to measure temperature are clinical thermometers. The thermometers that are used in laboratories are known as laboratory thermometers. These days digital thermometers are used to check fever. This is because these types of thermometers are considered as the fastest and the most accurate type of thermometers.