Q0405
Paragraf (Reading)Parça Bütünlüğü (Paragraph Unity)Zor
For a tornado to form from a supercell thunderstorm, several specific atmospheric conditions must align. When wind speed and direction change significantly with altitude, this wind shear can cause a storm's updraft to begin rotating. Once rotation is established within the storm, it can tighten and intensify, sometimes extending downward to form a funnel that reaches the ground.
AThe most severe tornado outbreaks usually follow periods of unusually warm, humid weather.
BSevere thunderstorms may also produce large hail, several centimetres in diameter.
CIn addition, lightning within these storms results from a build-up of static electrical charge.
DHowever, among these conditions, strong wind shear at different altitudes is considered essential.Doğru cevap
ESevere storms capable of producing tornadoes typically also bring damaging straight-line winds.
Neden?
Boşluktan sonra rüzgâr kesmesinin fırtınadaki yükselen havayı nasıl döndürdüğü anlatılır; yani boşluk, sayılan koşullar arasından rüzgâr kesmesini öne çıkarmalıdır. Doğru seçenek bunu 'among these conditions ... considered essential' diyerek yapar. Dolu, yıldırım ve doğrusal rüzgâr seçenekleri bu odaklanmayı sağlamaz.
PARALLEL BASE · Q458