Which statement is not correct with respect to the formation of a tornado? Selec
ID: 110502 • Letter: W
Question
Which statement is not correct with respect to the formation of a tornado? Select one: a. the wall cloud forms as the supercell draws in the high humidity air from the forward flank downdraft of the storm that rotates as it hits the ground. This forms a "wall" around the tornado as it forms. b. the rear flank of the storm curls around the updraft and supplies the rotating air that forms the tornado. On radar this feature creates the hook echo c. As the storm's updraft stretches upward, the rotation in the storm tightens causing the storm to spin faster. d. the source of the tornado's rotation comes from the collision of cold Canadian air and warm moist air from the Gulf of Mexico. Tornado strength is measured using the F-Scale (EF-Scale). Which statement about the F-Scale (EF-Scale) is not true? Select one: a. this scale can not be used while the tornado is occurring. It is only used when a damage assessment is completed. b. statistically, EF-5 tornadoes are very rare. In a typical year, there are approximately 20 EF-5 tornadoes in the US. c. a weakness of using this scale to estimate the tornado's wind speed is that some tornadoes don't hit anything or pass through open fields where the damage is hard to categorize. d. the most common tornado rank on the EF-Scale is an EF-0 or EF-1. True or False: Large cities are protected from violent tornadoes because the buildings and city structures disrupt the airflow of the tornado and the thunderstorm that is producing it. Select one: True FalseExplanation / Answer
1. Which statement is not correct with respect to formation of tornado?
Answer: A. The wall cloud forms as the Supercell draws in high humidity air. This forms a wall around the tornado.
Explanation: All the other options mentioned are true with respect to the formation of tornado except this formation of wall around the tornado.
2. Which statement about the EF-SCALE is not true?
Answer: D. The most common tornado rank on the EF scale is an EF-0 or EF-1
Explanation: There are six levels of EF scale and there is no such common rank because it is based on the wind speed.
3. Large buildings and city structures disrupt the airflow of the tornado and thunderstorm?
Answer: FALSE
Explanation: This is a common myth many people think. But it is completely false that tall buildings and structures disrupt the airflow of the tornado. Often Tornadoes hit the cities and cause damage Compare to open fields.
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