Ключевые слова: accident, activity, aerodynamic, altitude, aviation, bird, blue, brave, climb, clouds, colorful, cumulus, daylight, delta, extreme, fear, fly, foot, glider, gravity, green, hang, harness, height, high, hill, kite, launch, lift, mountain, pitch, plane, roll, run, sail, sky, soar, sport, sun, sunlight, thermal, updraft, weather, weight, wind, wing,