Physics Test 2

Question 1

The tendency of a liquid to rise in a tube

Answer 1

Capillarity

Question 2

A curved surface formed inside a capillary tube

Answer 2

Meniscus

Question 3

What forms a concave meniscus?

Answer 3

Water

Question 4

What forms a convex meniscus?

Answer 4

Mercury

Question 5

What are three forces that contribute to the rise or fall of water in a capillary tube

Answer 5

Adhesion
Cohesion
Atmospheric Pressure

Question 6

The study of liquids at rest

Answer 6

Hydrostatics

Question 7

Any push or pull on an object

Answer 7

Force

Question 8

Force is measured in what?

Answer 8

Newtons

Question 9

What is 1kg times m/s squared?

Answer 9

Newton

Question 10

Force exerted by a liquid is always __________ to the surface

Answer 10

Normal (Perpendicular)

Question 11

The amount of force brought to bear on a unit area of surface

Answer 11

Pressure

Question 12

Pressure is measured in what?

Answer 12

Pascals

Question 13

What is 1kg/ m times s squared

Answer 13

Pascal

Question 14

What is the accepted value of gravity

Answer 14

9.80 m/s squared

Question 15

What is the equation for the law of liquid pressure

Answer 15

P=pgh (relates to depth)

Question 16

What is the equation for force

Answer 16

F=AP or F=A(pgh)

Question 17

What happens when a tank has multiple openings

Answer 17

The bottom opening (orifice) has the greatest pressure.
The top orifice has the least pressure.
The middle orifice propels farthest from the tank.

Question 18

What is the distance below the highest level of water in a closed system

Answer 18

Water Head

Question 19

States that pressure applied to any surface of a confined liquid is transmitted equally in every direction throughout the liquid

Answer 19

Pascal’s Principle

Question 20

Uses confined liquid to multiply force

Answer 20

Hydraulic device

Question 21

States that the buoyant force acting on a body submerged in a liquid is equal to the weight of the liquid displaced by that body

Answer 21

Archimedes’ Principle

Question 22

The difference between the downward force and upward force of a submerged item

Answer 22

Buoyant force

Question 23

The study of liquids in motion

Answer 23

Hydrodynamics

Question 24

A liquid’s resistance to flow due to intermolecular attraction to itself

Answer 24

Viscosity

Question 25

States that flow rate and viscosity are inversely related

Answer 25

Principle of Viscosity

Question 26

The formation of tiny vapor bubbles within a moving liquid

Answer 26

Cavitation

Question 27

Three characteristics of an ideal liquid

Answer 27

Nonviscous Incompressible Uniform in density

Question 28

an ideal liquid's tendency to flow in straight lines without resistance

Answer 28

Laminar flow

Question 29

The swirl produced in a pipe due to the liquid's friction between itself and the pipe

Answer 29

Eddy Currents

Question 30

Measures the total volume of a liquid flowing past a point in one second

Answer 30

Volume Flow Rate

Question 31

States that the volume flow rate at any two points in a pipe must be constant regardless of the pipe's diameter. (A1 V1 = A2 V2)

Answer 31

Principle of Continuity

Question 32

The relationship between lateral pressure and velocity squared of a moving liquid inversely related

Answer 32

Bernoulli's Principle

Question 33

When velocity of a moving liquid increases, the lateral pressure __________

Answer 33

Decreases

Question 34

When velocity of a moving liquid decreases, the lateral pressure __________

Answer 34

Increases

Question 35

The most abundant element in the earth's atmosphere

Answer 35

Nitrogen

Question 36

The second most abundant element in the earth's atmosphere

Answer 36

Oxygen

Question 37

The bombardment of air molecules continually hitting each other

Answer 37

Air Pressure

Question 38

What are two thing that affect air pressure

Answer 38

The quantity of air that is present The temperature of air

Question 39

The total absence of air

Answer 39

Vacuum

Question 40

Caused by the weight of atmospheric air molecules

Answer 40

Atmospheric pressure

Question 41

Any substance capable of flowing

Answer 41

Fluids

Question 42

Two examples of fluids

Answer 42

Liquids Gases- differs from the ideal liquid in that they are compressible

Question 43

What are laws and principles that do not apply to gases

Answer 43

Law of liquid pressure Pascal's Principle Principle of continuity

Question 44

What are laws and principles that DO apply to gases?

Answer 44

Archimedes' Principle Bernoulli's Principle

Question 45

The false idea around for over 2,000 years that a vacuum is impossible to create because nature immediately fills an empty space with the nearest matter it can find

Answer 45

Horror Vacui

Question 46

The atmosphere can only support a maximum height of what?

Answer 46

33.9 ft

Question 47

Created the first vacuum in a barometer

Answer 47

Evangelista Toricelli

Question 48

Discovered that atmospheric pressure and pressure upon a liquid are equal

Answer 48

Blaise Pascal

Question 49

What is standard atmospheric pressure

Answer 49

1 atm = 76 cm Hg (Mercury) 1 atm = 760 torr 1 atm = 1.013x10 to the 5th Pa

Question 50

An apparatus designed to measure the pressure of a gas by using mercury

Answer 50

Manometer

Question 51

What is the difference between the gauge pressure and 1 atm

Answer 51

Absolute Pressure

Question 52

What are the characteristics of an aneroid barometer

Answer 52

Less sensitive that a mercury barometer More Portable Unaffected by orientation

Question 53

What states that, at constant temperature, the volume of gas is inversely proportional to its pressure

Answer 53

Boyle's Law

Question 54

What is the equation for Boyle's Law

Answer 54

P1V1 = P2V2

Question 55

What states that, at constant pressure, the volume of a gas is directly proportional to its absolute temperature

Answer 55

Charles' Law

Question 56

What is the equation for Charles' Law

Answer 56

V1/T1 = V2/T2

Question 57

The lowest temperature at which matter can exist

Answer 57

Absolute Zero (0 degrees or -273.15 degrees C)

Question 58

Temperature expressed in Kelvin

Answer 58

Absolute Temperature

Question 59

A combination of Boyle's Law and Charles' Law

Answer 59

Combined Gas Law (P1V1/T1 = P2V2/T2)

Question 60

States that, at the same temperature and pressure, two gases of the same volume have the same number of molecules

Answer 60

Avogadro's Law

Question 61

What is equal to 6.022x10 to the 23rd molecules

Answer 61

1 mole

Question 62

What is the equation for the Ideal Gas Law

Answer 62

PV = nRT where "R" is the universal gas constant

Question 63

Any device that transports air or that is driven by air pressure

Answer 63

Pneumatic Device

Question 64

Fluid that is caught up and carried along by another fluid stream nearby

Answer 64

Entrained

Question 65

What are the characteristics of Pump Potentials

Answer 65

Draw water or air out of a container Compress water or air in a container

Question 66

A simple device for transferring liquid from a higher container to a lower container

Answer 66

Siphon

Question 67

How does a siphon work?

Answer 67

A siphon tube connecting higher and lower tanks of liquid. When a partial vacuum is created in the tube, the liquid is pushed by atmospheric pressure from the higher tank into the tube and then pulled by gravity into the lower tank

Question 68

What has a definite shape and volume and its atoms vibrate in place

Answer 68

Solid

Question 69

What is the ability of a solid to recover its shape after being deformed by an external force

Answer 69

Elasticity

Question 70

The tendency of a solid to resist flexing or deforming

Answer 70

Rigidity

Question 71

The amount of deformation required to bring a material to its elastic limit

Answer 71

Resilience

Question 72

The point past which a material will not recover its original shape

Answer 72

Elastic Limit

Question 73

The maximum of relative deformation that may be permanently imposed upon a solid

Answer 73

Plasticity

Question 74

The mechanical working process when metal is squeezed or pounded with great force

Answer 74

Forging

Question 75

The mechanical working process when metal is pressed down by a series or paired heavy roller into a continuous sheet

Answer 75

Rolling

Question 76

The property of metals that allows them to be drawn into wire

Answer 76

Ductility

Question 77

Solids tend to hold their shape because of their strong__________between particles

Answer 77

Cohesion

Question 78

The deformative tensile force per unit cross-sectional area

Answer 78

Stress

Question 79

The relative amount of deformation from the original length/shape

Answer 79

Strain (Strain = Diff/Orig)

Question 80

Stress is _____________to strain

Answer 80

Directly Proportional

Question 81

The amount of tensile force required per unit area to double a solid's length

Answer 81

Young's Modulus (F/A = Y(change in l/L0

Question 82

Solids that break suddenly under a load instead of deforming first

Answer 82

Brittle

Question 83

The distance of separation where two particles of a solid neither attract nor repel

Answer 83

Equilibrium

Question 84

the combination of two oppositely directed forces along parallel lines of action

Answer 84

Shear

Question 85

The stress that causes bulk deformation

Answer 85

Volume Stress