Cabinets usually have one or more doors on the front, which are mounted with door hardware, and occasionally a lock. Many cabinets have doors and drawers or only drawers. Short cabinets often have a finished surface on top that can be used for display, or as a working surface, such as the countertops found in kitchens.
Plates at our planet s surface move because of the intense heat in the Earth s core that causes molten rock in the mantle layer to move. It moves in a pattern called a convection cell that forms when warm material rises, cools, and eventually sink down.
1 The Earth's surface is covered by a series of crustal plates. 2  The ocean floors are continually moving, spreading from the center, sinking at the edges, and being regenerated. 3  Convection currents beneath the plates move the crustal plates in different directions.