Place two identical tin cans on the stove. Pour 0.5 kg of water into one; put a few ice cubes of the same mass into the other. Notice how long it takes for the water in both cans to boil. Write a short report about your experience and explain its results.
When two identical tin cans with water and snow with the same weight of 0.5 kg are heated on a stove and boiling time is detected, we get a clear confirmation that boiling in a snow can is about 2.5 times later than in a water can (4 min. And 10 min.). This experience shows that significant energy is required to melt ice.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.