2. A regional jet en route from San Jose, California to Las Vegas, Nevada, is currently flying eastbound over the Sierra Nevada Mountains in California. The pilot immediately turns on the "fasten seat belt" sign after observing billow clouds to the North near the same altitude as the aircraft. Synthesize and apply related concepts from Module 6 to explain why the aircraft experiences an abrupt loss of 1000 feet of altitude a short time later.
4. Synthesize and apply related concepts from Module 6 to formulate a discussion on both the advantages and disadvantages of flying in the polar jet stream. In your discussion, include the general direction of flight - eastbound, westbound, northbound, or southbound - that is most advantageous and why.
6. Mid-latitude cyclones, and their associated air masses and weather fronts, present significant impacts and hazards to aircraft operations.
   2. Describe three different specific characteristics of the weather* associated with a warm and/or cold front, specifying which type of front - cold, warm, or both - each characteristic applies to.
   4. For each weather characteristic described, identify at least one specific impact or hazard* it presents to aircraft, while either flying through the front en route between airfields, and/or during the passage of the front while taking off or landing at an airfield. Synthesize and apply related concepts from Module 7 to support your answers.

*In answering B, keep in mind that there is a clear distinction between weather and an aviation impact or hazard resulting from weather. Fog and low clouds (weather) create low visibility and low ceilings (the aviation impact/hazard of fog and low clouds).