Imagine you pour some hot soup into a bowl. you place your hands on the outside of the bowl and feel that the bowl is very warm. how did the heat get from the soup from the bowl through your hands?

The process of thermal conduction is what caused you to sense the heat.

Temperature is a measure of the rate of molecular oscillation, and adding energy to an atom will make it hotter. The high-energy soup will lose the extra energy to the bowl, resulting in the slowing of the soup molecules but the consequent increase in speed of the molecules of the bowl. This would continue until the rate of the bowl atoms is equal to those of the soup, or until the temperatures are equal.

They are like other investigations? say there was a murder u have to do blood test and finger prints which run through a lab.