Fact 1: When metal conducts heat , that metal expands.

Fact 2: Metal expands when warm and contracts when cool.

Given the two facts above, answer the question "what does metal do when cooling?" with the following options: 
- contracts
 - Evaporation
 - It will move.
 - staying warm
 - behave
 - protect them
 - moves
 - they bend


 

 contracts        