Higher salinity leads to what?

Higher salinity leads to what?

• A. Higher density
• B. Lower density
• C. Higher temperature
• D. Lower salinity

Answer: (A)

When salinity increases, the density of the water increases. Density is mass per unit volume, and adding dissolved salts raises the mass without a proportional rise in volume, so the solution becomes heavier per unit volume. That’s why saltier water sits lower in a column and can sink if it’s also cool. Temperature also plays a role—warmer water expands and becomes less dense, while cooler water is denser—but the direct effect of higher salinity is to raise density. So the outcome is higher density; the other options don’t fit because they describe the opposite (lower density) or introduce a separate factor (higher temperature) that can counteract density but doesn’t negate the primary relationship with salinity.

When salinity increases, the density of the water increases. Density is mass per unit volume, and adding dissolved salts raises the mass without a proportional rise in volume, so the solution becomes heavier per unit volume. That’s why saltier water sits lower in a column and can sink if it’s also cool. Temperature also plays a role—warmer water expands and becomes less dense, while cooler water is denser—but the direct effect of higher salinity is to raise density. So the outcome is higher density; the other options don’t fit because they describe the opposite (lower density) or introduce a separate factor (higher temperature) that can counteract density but doesn’t negate the primary relationship with salinity.