Drone exam · Meteorology Weather Which site features can create local wind acceleration or rapidly changing flow? Select all correct answers A Gaps between buildings. B Ridge crests. C Street canyons. D Large isolated obstacles. E A printed checklist. Check answer Correct answers: A, B, C, and D. Gaps between buildings; Ridge crests; Street canyons; Large isolated obstacles. Terrain and structures reshape airflow; paperwork does not.