I found that it happens when a thermal gradient causes different parts of the object to expand by different amounts. And that the stress of the expansion may overcome the strength of the object, causing a crack to form.
But I still don't get why it causes it to break. Or what is the "stress of...
Homework Statement
I need to proove that temperature changes make objects break. I used a stone, and heated it for about 10 minutes. After that I put it in cold water. According to my teacher that should've broken the stone, but it didn't. I had to give it a few hits, not too many or too...