Chapter 6

Question 1

What is a non solid state of matter in which the atoms or molecules are free to move past each other, as in gas or liquid?

Answer 1

fluid

Question 2

What is the amount of force exerted per unit area of a surface?

Answer 2

pressure

Question 3

What is the SI unit of force?

Answer 3

pascal

Question 4

What is the pressure caused by the weight of the atmosphere?

Answer 4

atmospheric pressure

Question 5

What is the upward force that keeps an object immersed in or floating in liquid?

Answer 5

buoyant force

Question 6

What is 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?

Answer 6

Archimedes’ Principle

Question 7

What is the principle that states that the pressure in a fluid decreases as the fluid’s velocity increases?

Answer 7

Bernoulli’s Principle

Question 8

What is an upward force on an object that moves in a fluid?

Answer 8

lift

Question 9

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

Answer 9

thrust

Question 10

What is a force parallel to the velocity of the flow; it opposes the direction of an aircraft?

Answer 10

drag

Question 11

What is the principle that states that a fluid in equilibrium contained in a vessel exert a pressure of equal intensity in all directions?

Answer 11

Pascal’s Principle