Chapter 13 Physical Science Forces in Fluids

Bernoulli‘s principle states that as a speed of a fluid increases the pressure within the fluid

• Increases

• Stays the same

• It is at a constant speed

• Decreases

Air above the wing travels faster than air below the wing causing an upward force called

• Lift

• Pascals principle

• Bernoulli‘s principle

• Archimedes principle

The upward force acting on the object submerged is called

• Pascals principle

• Hydraulic system

• pressure

• Buoyant force

The strength of a buoyant force

acting on an object in a fluid depends on the objects

• pressure

• Force

• Volume

• Density

Hot air balloons float because the weight of a balloon is less than the weight of the air displaced by

• The balloons volume

• The pressure in the balloon

• By the balloon itself

• How high the balloon is in the air

Hi air balloon float because

• The weight Of the balloon is less than the weight of the air displaced by the balloon

• The weight Of the balloon is greater than the weight of the air displaced by the balloon

• The weight of a balloon is equal to the weight of the air displaced by the balloon

The relationship between buoyant force any weight of a displaced fluid was first dated by

• Pascal

• Bernoulli

• Archimedes

In order to calculate pressure exerted on a surface you must

• divide the surface area by the force

• Divide force by the surface area

Pascale is the SI unit of pressure

• True

• False

Which of the following are fluids

• Water

• Sunlight

• Gasoline

• Air