Choose the substance with the highest viscosity A. water at 40 C B. water at 20 C C. water at 10 C D. water at 30 C E. water at 50 C
The Correct Answer and Explanation is :
The correct answer is: C. water at 10°C
Viscosity is a measure of a fluid’s resistance to flow. It describes the internal friction of a moving fluid. A fluid with high viscosity resists motion because its molecular makeup gives it a lot of internal friction. A fluid with low viscosity flows easily because its molecular makeup results in minimal friction.
The viscosity of water decreases as temperature increases. This is because increasing the temperature gives water molecules more energy, allowing them to move more freely and overcome the intermolecular forces holding them together. At lower temperatures, the kinetic energy of the water molecules is reduced, and the intermolecular forces become more dominant, leading to increased viscosity.
At 10°C, water has a higher viscosity compared to higher temperatures. This is due to the decreased kinetic energy of the water molecules, which causes them to interact more closely and with greater attractive forces, making the water thicker or more viscous. Conversely, at 50°C, water molecules have higher kinetic energy and can overcome intermolecular forces more easily, resulting in lower viscosity.
This relationship between temperature and viscosity is crucial in many applications where fluid flow is important, such as in hydraulic systems, where precise control of fluid movement is required, or in meteorology, where the viscosity of atmospheric water can affect weather patterns and cloud formation.
Now, I’ll generate an image that visualizes this concept of how water viscosity changes with temperature.
Here’s the image visualizing how the viscosity of water changes with temperature. It illustrates water molecules at different temperatures, showing how their arrangement and movement are affected by temperature changes, which in turn affects viscosity.
