Final answer:
Tornadoes are powerful and destructive weather phenomena. They typically have a narrow width and can produce extremely high wind speeds. The average time a tornado spends on the ground is around 10-15 minutes.
Step-by-step explanation:
Tornadoes are powerful and destructive weather phenomena. They typically have a narrow width, with the funnel-shaped portion at the bottom being the narrowest. Tornadoes can produce wind speeds as high as 500 km/h (approximately 300 miles/h). As for their time on the ground, tornadoes can vary in duration from a few seconds to several hours, but the average time on the ground is around 10-15 minutes.