6.1-6.3

Question 1

Fluid

Answer 1

a nonsolid state of matter in which the atoms or molecule are free to move past each other

Question 2

Pressure

Answer 2

the amount of force exerted per unit area fo a surface

Question 3

pascal

Answer 3

the SI unit of pressure

Question 4

atmospheric pressure

Answer 4

the pressure caused by the weight of the atmosphere

Question 5

buoyant force

Answer 5

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

Question 6

Archimedes’ principle

Answer 6

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

Question 7

Bernoulli’s principle

Answer 7

the princiable that states that the pressure in a fluid decreases as the fluid’s velocity increases

Question 8

lift

Answer 8

an upward force on an object that moves in a fluid

Question 9

thrust

Answer 9

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

Question 10

drag

Answer 10

a force parellel to the velocity of the flow

Question 11

pascal’s priciable

Answer 11

the princiable taht states that a fluid in equilibruim contained of equal intensity in all direction