Answer:
The formation of icicles from water that drips from roofs in cold weather is an example of the phase change from a liquid to a solid.
Step-by-step explanation:
The formation of icicles from water that drips from roofs in cold weather is an example of the phase change from a liquid to a solid. Water is a substance that exists in three main states or phases: solid (ice), liquid (water), and gas (water vapor). When water is exposed to cold temperatures, the kinetic energy of its molecules decreases, and the water becomes less able to move freely. As a result, the water molecules begin to slow down and form a more organized, crystalline structure, and the water changes from a liquid to a solid, forming icicles.
The process of water changing from a liquid to a solid is known as freezing, and it is the opposite of the phase change from a solid to a liquid, which is called melting. When water freezes, it releases latent heat, which is the energy that is stored in the water molecules as they change from a liquid to a solid state. This release of latent heat can help to keep the surrounding air warm, and it can prevent the temperature from dropping too low, which can be beneficial for plants and animals in cold climates.
Overall, the formation of icicles from water that drips from roofs in cold weather is an example of the phase change from a liquid to a solid, and it is an important part of the Earth's natural processes and cycles.