The Air-Conditioning and Refrigeration Institute provides a brief explanation of how central air conditioning works 1  . The California Consumer Energy Center offers detailed information on central air systems and specifics on ducts and vents .
Convergent Plate Boundaries. Sections of the Ring of Fire, subduction zones that surround much of the Pacific Ocean, are underwater. Submarine volcanoes at these convergent plate boundaries are much like their counterparts on land. Many of these volcanoes form new islands that last only a short time. Left: Perhaps the most famous submarine volcano is Krakatau, a submerged caldera located between Java and Sumatra.
Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along plate boundaries in zones that may be anything from a few kilometres to a few hundred kilometres wide. To watch a simulated fly-by along New Zealand's plate boundary check out this video.. Convergent boundaries: where two plates are colliding. Subduction zones occur when one or both of the tectonic plates are composed of oceanic crust. The denser plate is subducted underneath the less dense plate. The plate being forced under is eventually melted and destroyed. i.