What is the density of water at a temperature of 4℃?

Study for the GWWI WEF Wastewater Treatment Fundamentals Test. Review key concepts with flashcards and multiple-choice questions, complete with hints and explanations. Prepare to ace your exam!

The density of water at a temperature of 4℃ is often accepted to be approximately 1000 kg/m³. This value is significant because it represents the maximum density of water, which occurs at this specific temperature. As temperature decreases below 4℃, water begins to expand and its density decreases; conversely, as temperature increases above 4℃, water also expands, leading to a decrease in density.

This property is crucial in various applications, particularly in environmental science and engineering, because it influences the behavior of water bodies, impacting stratification, temperature layers in lakes, and aquatic life. The approximation of 1000 kg/m³ is also utilized in calculations involving buoyancy, fluid dynamics, and water treatment processes, making it a fundamental reference point in scientific and engineering contexts.

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