When the temperature of water rises from `0^(@)C` to `10^(@)C`,the density of water

Options

A. decreases gradually.
B. decreases up to `4^(@)C` and then increases.
C. increases up to `4^(@)C` and then decreases.
D. increases gradually.

Explanation

### Step-by-Step Solution:

1. **Understanding Density**: Density is defined as mass per unit volume. It can be mathematically represented as:
\[ \text{Density} = \frac{\text{Mass}}{\text{Volume}} \]

2. **Effect of Temperature on Water**: When the temperature of water increases, its kinetic energy also increases. This increase in kinetic energy causes the water molecules to move more vigorously, which leads to an increase in volume.

3. **Behavior of Water from 0°C to 4°C**: As the temperature of water rises from 0°C to 4°C, the density of water actually increases. This is because the volume of water decreases slightly as it approaches 4°C, leading to a higher density.

4. **Behavior of Water Above 4°C**: When the temperature of water rises above 4°C (up to 10°C in this case), the volume of water starts to increase significantly. As a result, the density begins to decrease.

5. **Conclusion**: Therefore, when the temperature of water rises from 0°C to 10°C, the density of water first increases (up to 4°C) and then decreases (from 4°C to 10°C).

6. **Correct Option**: The correct statement regarding the density of water when the temperature rises from 0°C to 10°C is that it increases up to 4°C and then decreases.