Provide an explanation for how a tornado could lift the roof off a building, and why it is not a good idea to open windows of a building during a tornado
What will be the ideal response?
ANSWER: As high winds blow over a roof, lower air pressure forms above the roof. The greater air pressure inside the building then lifts the roof just high enough for the strong winds to carry it away. A similar effect occurs when the tornado’s intense low-pressure center passes overhead. Because the pressure in the center of a tornado may be more than 100 mb (3 in.) lower than that of its surroundings, there is a momentary drop in outside pressure when the tornado is above the structure. It was once thought that opening windows and allowing inside and outside pressures to equalize would minimize the chances of the building exploding. However, it is now known that opening windows during a tornado actually increases the pressure on the opposite wall and increases the chances that the building will collapse. (The windows are usually shattered by flying debris anyway.)
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What will be an ideal response?
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Fill in the blank(s) with the appropriate word(s).