The phenomenon that ice is put into water;
1. Ice will float on the water, which is a phenomenon that water produces buoyancy.
2. The slow dissolution of ice cubes is a phenomenon that ice cubes absorb heat and dissolve.
3. After the ice cubes are dissolved, the water level becomes higher, and the density of the ice cubes is greater than that of water. When ice cubes are dissolved in water, their mass remains unchanged, and their volume becomes larger because their density becomes smaller.
The temperature of water has dropped, which is a heat transfer phenomenon.
The force that an object immersed in a fluid is vertically lifted by the fluid is called buoyancy. The buoyancy of an object in a liquid is only related to the volume immersed in the liquid and the density of the liquid, and has nothing to do with the density of the object itself, the state of motion, the depth immersed in the liquid and other factors.
In water, although objects with higher density than water will sink, such as stones and iron blocks. Objects less dense than water will rise, such as plastic and wood, but their buoyancy will not change. The same rule exists in other liquids and gases.
For example, wood can float in water, and ships can sail in the sea, all of which are the contributions of buoyancy. Buoyancy comes from the pressure difference between the upper surface and the lower surface of the object. The direction of buoyancy is opposite to gravity, which can be simply understood as: gravity pulls back all objects that want to run back to the ground, and buoyancy helps objects leave the ground.