It’s Marbelous
The effects caused by heat and cold conditions are pretty interesting, to begin with. But when combined, they can create some amazing things! Take this marble, for instance. It started out as a regular marble, and that interesting cracked appearance is the result of being heated over a flame and then immediately dropped into cold water.
It would be even cooler to see a before and after shot, but at least we got to find out exactly what happens when you heat and then cool a marble, in case you wondered. This is actually a pretty easy DIY project and could be a cool experiment–but it’s definitely not safe for kids due to the element of fire.