I recently asked my newly-graduated son a question: "Why do ice cubes melt?" I had been thinking about my 9th grade science students working on a project that involved designing a container that would maintain an ice cube in its frozen state for as long as possible.
My son thought a moment, then said with a laugh, "Because of the heat."
"Yes, I know," I replied, "But how does heat make ice melt?" >> Read more »