Dilatometer: physics experiment applied as a teaching-learning tool

Abstract

When two bodies with different temperatures approach each other, they tend to transfer thermal energy to reach equilibrium. When this exchange of thermal energy takes place between bodies, it is called heat. The greater the agitation of the molecules present in the body, the greater its internal energy level, consequently, the higher its temperature as well. The main objective of this article is to show the experimental class as an ally in the teaching-learning process, in order to attract the student's interest in the content addressed. The practical class on the expansion of solids was applied to second grade students, from E.E.B. Professor Maria Paula Feres, Mafra-SC. In it, the concepts of thermal expansion were presented and the experiment was carried out with the Dilatometer. The class was developed in the school's laboratory, starting with a brief explanation of what linear expansion of solids is and how a dilatometer works. The experimental class was of immense value, both for the students who had the opportunity to participate, and especially for us academics, where a useful class can be held, with a positive and extremely significant result.

Keywords: physics; dilation; teaching; experiment.