1. What is Water Density?

Definition: Water density (ρ) is the mass per unit volume of water, typically measured in kg/m³.

Standard Value: Pure water reaches its maximum density of 1000 kg/m³ at 4°C under standard atmospheric pressure.

2. How Does Water Density Vary?

Water density changes with:

• Temperature: Density decreases as temperature moves away from 4°C
• Pressure: Increases slightly with increasing pressure
• Salinity: Saltwater is denser than pure water

3. Importance of Water Density

Applications: Crucial for fluid dynamics, buoyancy calculations, oceanography, and engineering applications.

4. Using the Calculator

Instructions: Enter water temperature in °C to see the approximate density. The calculator uses a simplified model for demonstration.

5. Frequently Asked Questions (FAQ)

Q1: Why is water densest at 4°C?
A: Water's unique hydrogen bonding causes this anomalous behavior, which is crucial for aquatic life.

Q2: How accurate is this calculator?
A: This uses a simplified model. For precise calculations, consult scientific water density tables.

Q3: What's the density of ice?
A: Ice at 0°C has a density of about 917 kg/m³, which is why it floats on water.

Q4: How does salinity affect density?
A: Seawater (35g salt/kg water) has density of about 1025 kg/m³ at 4°C.

Q5: What's the density at room temperature?
A: Water at 20°C has a density of approximately 998 kg/m³.