Questions
À Look up the accepted values for the linear expansion coefficient for copper, steel, and
aluminum. Compare these values with your experimental values. What is the percentage
difference in each case? Is your experimental error consistently high or low?
Á On the basis of your answers in question 1, speculate on the possible sources of error in
your experiment. How might you improve the accuracy of the experiment?
 From your result, can you calculate the coefficients of volume expansion for copper,
aluminum, and steel? (i.e. DV = avolV DT)