About Bimettalic Strips (*Question in the Details*) plz help?

Question

Two bimetallic strips have identical shapes. One is made from aluminum and steel, while the other is made from copper and silver. Which is likely to bend more for a given change in temperature? Justify your asnwer please
explain the best you can, thanks

Answer 1

What you have to do is to find out the coefficient of thermal expansion for each of the metals. This is a number that represents how much a metal will expand when heated.
the pair with the greatest difference will be the one that bends the most.