First, you measured the mass of the metal and the water inside the calorimeter. ▪ Then, you the metal and added it to water in the calorimeter. ▪ After heat transferred from the metal to the water, you measured the of both materials.

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .