lena carried out an investigation to find the energy content in bacon rind she lit the bacon rind with a bunsen burner and held it beneath a test tube of water she stirred the water and recorded it temperature!

why did lena stir before recording the temperature?

Lena stirred the water before recording the temperature because it helps in achieving a uniform distribution of heat. Stirring the water ensures that the heat from the burning bacon rind is effectively transferred throughout the water, resulting in an accurate measurement of the temperature change. Without stirring, there might be temperature variations within the water, which could lead to an inconsistent measurement of the energy content of the bacon rind. So, by stirring, Lena was able to ensure that the heat was evenly dispersed throughout the water, providing more reliable results.