Chapter 3 lessons 1-3

Question 1

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

Answer 1

Fluid

Question 2

the amount of force exerted per unit area of a

Answer 2

Pressure

Question 3

the SI unit for

Answer 3

Pascal

Question 4

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

Answer 4

Atmospheric Pressure

Question 5

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

Answer 5

Buoyant Force

Question 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 voulume of fluid that the object displaces

Answer 6

Archimedes’ Principle

Question 7

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

Answer 7

Bernoulli’s Principle

Question 8

an upward force on an object that moves in a fluid

Answer 8

Lift

Question 9

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

Answer 9

Thrust

Question 10

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

Answer 10

Drag

Question 11

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.

Answer 11

Pascals Principle