Second, the frame creates a flat and straight surface even when the shingles are badly curled or the roof ridge is bowed. Finally, the frame creates a ventilation gap that helps prevent ice dams in ...
The Mid-Atlantic ridge lies at the boundary of two of the tectonic plates that cover the Earth ... At this location, tall structures called vent chimneys form on the seafloor from seawater interacting ...
Researchers have discovered meter-high chimneys on the floor of the Dead Sea. These are formed by the spontaneous crystallization of minerals from groundwater with an extremely high salt content ...