Florida Education Standards. How do clouds form? Main types of clouds. Precipitation. Air Pressure. What are the Four Most Influential Air Masses that Affect the Weather in North America? What is needed for a thunderstorm to occur? Thunderstorm key ingredients: Moisture, Instability and Uplift. What is a hurricane? What is a tornado? What is climate? Climate Zones: Polar zone, Temperate zone, Tropical zone. The location of the zone determines its climate. Read More...