I'd research the properties of an ice cube. For instance, how cold is it if it is an ice cube? At what temperature does water melt? Etc etc.
Then I'd narrow down my question - are you inside where it's warm or outside where it's colder? If you do this experiment outside, it could be cold enough where you live that you'll get a different result than someone who lives in a warmer area. And, what is the temperature of the water? Very warm? Very cold?