Understanding the Bernoulli Principle

What is the Bernoulli principle primarily used to explain?

• The growth of plants

• The behavior of fluids in motion

• The flow of electricity in circuits

• The behavior of solids under pressure

In the hair dryer and pingpong ball demonstration, what happens to the pressure around the ball when the air moves rapidly?

• The pressure fluctuates

• The pressure remains constant

• The pressure increases

• The pressure decreases

How does the Bernoulli principle help in inflating a plastic bag quickly?

• By increasing the temperature inside the bag

• By compressing the air inside the bag

• By creating a low pressure region that draws in surrounding air

• By using a vacuum to suck air into the bag

What happens to a sheet of paper when air is blown over its top surface?

• The paper rises

• The paper remains still

• The paper falls down

• The paper tears

In the balloon demonstration, why do the balloons move together when air is blown between them?

• The air creates a high pressure zone between the balloons

• The air creates a low pressure zone between the balloons

• The air pushes the balloons apart

• The air has no effect on the balloons

Why do people often think that faster moving air means higher pressure?

• Because faster air is louder

• Because faster air feels colder

• Because faster air is invisible

• Because faster air feels like it exerts more force

What is the relationship between fluid velocity and pressure according to the Bernoulli principle?

• Velocity and pressure are unrelated

• Higher velocity means constant pressure

• Higher velocity means higher pressure

• Higher velocity means lower pressure

How does the concept of collision rate relate to pressure in a fluid?

• Collision rate does not affect pressure

• Higher collision rate means higher pressure

• Collision rate only affects temperature

• Higher collision rate means lower pressure

What analogy is used to explain the concept of fluid flow and pressure?

• A flowing river

• Traffic on a highway

• A moving train

• A spinning top

What happens to the collision rate when fluid particles are aligned in the same direction?

• The collision rate decreases

• The collision rate increases

• The collision rate becomes unpredictable

• The collision rate remains the same