Yes, stratus clouds are found closer to the ground compared to other types of clouds. They are often called "low-level clouds" and typically form below 6,500 feet (2,000 meters).

Here's why:

* Formation: Stratus clouds are formed by the lifting and cooling of air, which causes water vapor to condense into tiny water droplets. This process usually occurs closer to the ground where the air is cooler and more easily saturated.

* Appearance: Stratus clouds have a flat, gray, and layered appearance, covering the entire sky like a sheet. They often resemble fog that has lifted off the ground.

* Weather: Stratus clouds are associated with overcast skies and light drizzle or mist. They can also indicate stable atmospheric conditions, meaning that the air is not likely to produce strong thunderstorms.

Other cloud types:

* Cumulus clouds: These are puffy, cotton-like clouds that often form higher in the atmosphere (up to 6,500 feet).

* Cirrus clouds: These are wispy, feathery clouds that form at high altitudes (above 20,000 feet).

* Cumulonimbus clouds: These are towering, thunderstorm clouds that can extend from low levels to high altitudes.