describe using bernoulli's principle, how roofs are lifted off buildings in tornadoes

To explain how roofs are lifted off buildings in tornadoes using Bernoulli's principle, we first need to understand what Bernoulli's principle is. Bernoulli's principle states that as the speed of a fluid (air in this case) increases, the pressure within the fluid decreases, and vice versa.

Now, let's apply Bernoulli's principle to the scenario of a tornado lifting roofs off buildings. Tornadoes are characterized by strong rotating winds. As a tornado approaches a building, it creates an intense wind flow around and over it.

The upward force exerted by the wind on the roof partly arises from the pressure difference between the bottom and top surfaces of the roof. As the wind speeds up while moving over the roof, according to Bernoulli's principle, the pressure on the top surface of the roof decreases.

The air flowing over the roof creates a lower pressure area above it, while the pressure beneath the roof remains relatively higher. This pressure difference generates an upward force called lift. As the lift force increases, it can eventually exceed the gravitational force holding the roof down, leading to the roof being lifted off the building.

It is essential to note that the lifting of roofs in tornadoes is a complex phenomenon influenced by other factors like the structure's integrity, material strength, and angle of wind impact. While Bernoulli's principle plays a role in explaining the roof lift, it is not the sole reason why roofs are lifted off buildings in tornadoes.

http://suite101.com/a/bernoullis-principle-and-storms-a21290

you should be able to get your answer at this site.