When water is cooled below 4°C, it:

🧠 Explanation:

When water is cooled below 4°C, it expands due to its unique density anomaly. Unlike most substances, water’s density peaks at 4°C, then decreases as it nears 0°C, forming less dense ice. This expansion, studied in physics, causes ice to float, impacting ecosystems like lake freezing. It’s critical in engineering, affecting pipe design in cold climates. Understanding this behavior highlights water’s role in environmental and technological systems, ensuring accurate planning for infrastructure and ecological studies, with applications in climate science and resource management globally.