One rod is made of lead and another from quartz. The rods are heated and experience the same change in temperature. What can be said about the change in length of each rod?
1) The change in length of each rod is the same
2) The change in length of the lead rod is greater than the change in length of the quartz rod
3) The change in length of the quartz rod is greater than the change in length of the lead rod
4) The change in length of each rod is different