Stratus cloud a region. Some call these clouds "high fog" for the fog-like cloud. While light rain may fall, this cloud does not indicate much meteorological activity. Stratus clouds form when a sheet of warm, moist air lifts off the ground and depressurizes, following the lapse rate. This causes the relative humidity to increase due to the adiabatic cooling. Stratus clouds look like featureless gray to white sheets of cloud. They can be composed of water droplets, supercooled water droplets, or ice crystals depending upon the ambient temperature. Stratus nebulosus clouds appear as a featureless or nebulous veil or layer of stratus
Sheet cake Sheet cake A sheet cake is a cake baked in a large, flat rectangular pan such as a sheet pan or a jelly roll pan. These single-layer cakes are almost always frosted, with decorations and ornamental frosting along the borders and the flat top surface. In the United States, these inexpensive cakes are commonly available in supermarkets and bakeries. Sheet cakes may be made in any flavor, with chocolate and vanilla being the two most common. Commonly made in the home with boxed cake mixes, they can come in a variety of additional flavors, with colorful batter mix-ins such as