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.
The most studied aspect of plate movement involves the large convection currents in the mantle. As energy is transferred throughout the molten levels of the mantle (asthenosphere), new material is pushed up towards the surface, moving the old rock out of the way. The emergence of this new land causes the plates to move where the material comes out. The most easily recognizable example of this process occurs at the mid ocean ridges, where the plates on either side of the ridge are being pushed away from each other.