Chapter 3 lessons 1-3 Flashcards

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1
Q

a non solid state of matter in which the atoms or molecules are free to move past each other. A fluid has the ability to take the shape of its

A

Fluid

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2
Q

the amount of force exerted per unit area of a

A

Pressure

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3
Q

the SI unit for

A

Pascal

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4
Q

the pressure cause by the weight of the atmosphere. As altitude increases, pressure

A

Atmospheric Pressure

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5
Q

the upward force that keeps an object immersed in or floating in a liquid

A

Buoyant Force

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6
Q

the principle that states that the buoyant force on an object in a fluid is an upward force equal to the weight of the voulume of fluid that the object displaces

A

Archimedes’ Principle

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7
Q

the principle that states that the pressure in a fluid decreases as the fluid’s velocity increases. If velocity increases pressure decreases. If velocity decreases, pressure increases

A

Bernoulli’s Principle

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8
Q

an upward force on an object that moves in a fluid

A

Lift

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9
Q

the pushing or pulling force exerted by the engine of an aircraft or rocket

A

Thrust

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10
Q

a force parallel to the velocity of the flow in a fluid. Drag opposes the direction of an aircraft and in combination with thrust, determines the speed of an aircraft

A

Drag

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11
Q

the principle that states that a fluid in equilibruim contained in a vessel exerts a pressure of equal intensity in all directions. Any change to the pressure in an enclosed fluid will be equal in all directions.

A

Pascals Principle

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