Bernoulli’s principle

What happens to the pressure of a fluid when its velocity increases?

• When the velocity of a fluid increases, the pressure it exerts become zero.

• When the velocity of a fluid increases, the pressure it exerts decreases.

• When the velocity of a fluid increases, the pressure it exerts increases.

• When the velocity of a fluid increases, the pressure it exerts stay the same.

Can you explain Bernoulli’s Principle in your own words?

Who discovered Bernoulli’s Principle?

Why does water spray farther when you put your thumb over the end of a hose?

• Narrowing the hose increases the speed of the water, which lowers its pressure. The slower-moving water can shoot out closer

• Narrowing the hose increases the speed of the water, which lowers its pressure. The slower -moving water can shoot out farther

• Narrowing the hose increases the speed of the water, which lowers its pressure. The faster-moving water can shoot out farther

• Narrowing the hose increases the speed of the water, which lowers its pressure. The faster-moving water can shoot out closer

How does Bernoulli’s Principle help airplanes fly?

• Air moves faster over the curved top of the wing than under it. This creates lower pressure above the wing and higher pressure below it, lifting the airplane.

• Air moves slower over the curved top of the wing than under it. This creates higher pressure above the wing and lower pressure below it, lifting the airplane.

How is Bernoulli’s Principle used in a garden spray?

• Water flows slow through a narrow tube, creating high pressure. This high pressure sucks up fertilizer or pesticide and mixes it with water for spraying.

• Water flows fast through a narrow tube, creating low pressure. This low pressure sucks up fertilizer or pesticide and mixes it with water for spraying.

What role does Bernoulli’s Principle play in a carburetor?

• 4. Air slows down in a narrow part of the tube, increasing pressure. This high pressure pulls fuel from the tank into the airflow, mixing it with air to power the engine.

• 4. Air speeds up in a narrow part of the tube, reducing pressure. This low pressure pulls fuel from the tank into the airflow, mixing it with air to power the engine.

What would happen to the fluid pressure if the pipe suddenly became very wide again?

• The fluid would speed up, and the pressure would decrease again because the velocity has increase.

• The fluid would speed up, and the pressure would increase again because the velocity has decreased.

• The fluid would slow down, and the pressure would decrease again because the velocity has increase.

• The fluid would slow down, and the pressure would increase again because the velocity has decreased.

Can Bernoulli’s Principle explain how tornadoes lift roofs off houses?

• Yes. Fast-moving air over the roof creates low pressure. The higher pressure inside the house pushes the roof upward, possibly lifting it off.

• No. Fast-moving air over the roof creates high pressure. The lower pressure inside the house pushes the roof downward, so, it is not possible to lift it off.

How is Bernoulli’s Principle related to energy conservation?

• It shows how kinetic energy and pressure energy are exchanged. When a fluid speeds up (more kinetic energy), pressure energy goes down, keeping the total energy constant.

• They are not related to each other