Question

Fill in the blanks:
The hotness of an object is determined by _______?

Answer 1

We know that we can feel when we touch some objects. For example, on a cold winter’s day if we touch a metal rod in the room then we feel cold, similarly when we touch a fire log then we feel hot and we may also get fire burn injuries. What is the factor which determines this sensation of hotness or coldness?

Complete answer:
Temperature is the property of the substance which is defined as the measure of hotness or coldness of the body. According to thermodynamics heat is a form of energy which travels from a body at higher temperature to the body at a lower temperature. So, the role of the temperature is to determine the direction of flow of heat. The temperature of steam is very high, which shows it is very hot. On the other hand, the temperature of ice is very low which shows it is very cold. Thus, temperature is the measure of hotness or the coldness of a body. Hence the answer is the temperature.

Note:
Temperature can be measured with the help of measuring scales. There are many measuring scales such as Celsius scale, the Fahrenheit scale, the Kelvin scale etc. Each has their own important applications in different walks of life. One important thing to keep in our mind is that heat never moves from a body at lower temperature to a body at higher temperature at its own.