Here's why:
* Wind is the primary driver of cloud movement. Wind currents are what push and pull the air, carrying the water droplets or ice crystals that make up clouds along with them.
* Without wind, clouds would remain stationary. They would simply float in the air, held up by buoyancy and the balance of forces acting on them.
However, there are a couple of things to keep in mind:
* Clouds can appear to move due to perspective. If you are moving, the clouds will appear to be moving in the opposite direction.
* Clouds can be influenced by other factors, such as updrafts and downdrafts. These air currents can cause some localized cloud movement, even in the absence of a strong wind.
In conclusion, while clouds can appear to move due to perspective or local air currents, they cannot move across the sky in a sustained way without the presence of wind.
