How are air masses classified? What type of air brings most of the precipitation to the eastern US? How does a warm front differ from a cold front? What clouds are associated with thunderstorms? What conditions are necessary for thunderstorm development? How does hail form? Why does lightning form? What is a fulgarite? What is a tornado and what scale measures them? Why does the US have more tornadoes than anywhere else? What conditions are required to generate a tornado? Why are they difficult to predict? What is a cyclone? Where do hurricanes form? What are they called in different parts of the world? What scale is used to measure hurricanes? How are they named? What different steps occur before a storm is called a hurricane? What conditions are required to build a hurricane? What regions of the US are at the most risk and why do hurricanes take the path that they do? When is hurricane season and when are they most frequent? What type of damage can occur from hurricanes? What can we do as a society, community and as individuals to minimize the risk of hurricanes?