book 2. chapter 3 Flashcards Preview

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Flashcards in book 2. chapter 3 Deck (11):
1

a nonsolid state of matter in which the atoms or molecules are free to move past each other, as in gas or liquid.

fluid

2

the amount of force exerted per unit area of surface

pressure

3

the SI unit of pressure (symbol, Pa)

pascal

4

the pressure caused by the weight of atmosphere

atmospheric pressure

5

the upward force that keeps an object immersed in or floating on an object

buoyant force

6

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

Archimedes principal

7

the principle that states that the pressure in a fluid decreases as the fluid as the fluid's velocity increases

Bernoulli's principle

8

an upward force on an object that moves in a fluid

lift

9

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

thrust

10

a force parallel to the velocity of the flow; it opposes the direction of an aircraft and, in combination with thrust, determines the speed of the air craft

drag

11

the principle that states that a fluid in equilibrium contained in a vessel exerts a pressure of equal intensity in all directions.

Pascal's principle