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1202 Question

1. Aviation System

Airways: Invisible path in the sky, pilots follow the predetermined routes

Departure:

  1. At the gate
  2. Taxis to the runway
  3. Get clearance from air traffic control
  4. Take off

Landing:

  1. Follow a descent path
  2. Get clearance to land
  3. Lands
  4. Taxis to its gate

Traffic rule:

  • Right-of-way rules
    • General rules
      • Non powered > powered
      • Balloons > non-powered
      • Distress aircraft >
    • Converging: the right has the right-of-way
    • Overtaking: aircraft being overtaken has the right-of-way
    • Head-on: both alter to the right
    • Landing: lower altitude
  • Altitude assignments to prevent collisions
  • Speed limits
  • Rules for navigating around bad weather

Communication: use radio to communicate with air traffic control and other aircraft

Navigation: use GPS and VORs (Very High Frequency Omnidirectional Range.)

2. Chlorine turn Black to Red

  • Chemical reaction between the fabric dye and the chemical in the pool, especially chlorine, known for bleaching effect
  • pH level

3. Essential Oil

Concentrated plant extract, retain natural smell and flavor

Production

  1. Extraction
    1. Distillation: most common, steamed, and cooled to separate the oil and water
    2. Cold pressing
    3. Solvent extraction
    4. CO2 extraction