Question

Which type of turbulence occurs when air near the surface changes directions as it flows over or around obstructions?

Group of answer choices

Wake turbulence

Thermal turbulence

Clear air turbulence

Mechanical turbulence

Flag question: Question 23
Question 231 pts
23. Which type of turbulence is most common with fast-moving cold fronts and can cause severe turbulence?

Group of answer choices

Frontal turbulence

Mechanical turbulence

Thermal turbulence

Mountain wave turbulence

Answer 1

1) Mechanical turbulence — it occurs when surface obstructions cause the wind to change direction and speed near the ground.

2) Frontal turbulence — especially common and often severe with fast-moving cold fronts due to strong lift and wind shear along the front.