Chapter 11 All Sections

Question 1

Pressure

Answer 1

the force applied perpendicular to the surface of an object per unit area over which that force is distributed.

Question 2

Pascal

Answer 2

A unit of pressure equal to 1 newton per square meter

Question 3

Fluid

Answer 3

A material that can easily flow

Question 4

Barometer

Answer 4

An instrument used to measure atmospheric pressure

Question 5

Density

Answer 5

The ratio of the mass of a substance to its volume

Question 6

Buoyant force

Answer 6

The upward force exerted by a fluid on a submerged object

Question 7

Archimedes’ principal

Answer 7

states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces and acts in the upward direction at the center of mass of the displaced fluid.

Question 8

Pascal’s principal

Answer 8

is a principle in fluid mechanics that states that a pressure change occurring anywhere in a confined incompressible fluid is transmitted throughout the fluid such that the same change occurs everywhere.

Question 9

Hydraulic system

Answer 9

A system that multiplies force by transmitting pressure from a small surface area

Question 10

Bernoulli’s principal

Answer 10

states that as the speed of a moving fluid (liquid or gas) increases, the pressure within the fluid decreases.

Question 11

Lift

Answer 11

An upward force