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9th Grade Flashcards > Physical Science Test Nine Weeks > Flashcards

Physical Science Test Nine Weeks Flashcards

1
Q

a partial representation of something else

A

model

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2
Q

model of a design used for testing

A

prototype

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3
Q

discovered air pressure

A

Torricelli

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4
Q

a device to measure altitude

A

altimeter

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5
Q

factor used to determine the results of an experiment

A

dependent variable

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6
Q

tentative explanation

A

hypothesis

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7
Q

limitations of science

A

bias, approximations, assumptions, scope of science

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8
Q

group in which the independent variable is absent

A

control group

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9
Q

study of matter and movement of God’s physical creation

A

science

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10
Q

fluids tend to move from areas of _______ to areas of _______

A

higher pressure to lower pressure

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11
Q

a hypothesis can be proven false if one or more of its predictions is false

A

falsifiable

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12
Q

means that a scientist will obtain consistent results if he performs the experiment many times, keeping all factors as similar as possible

A

repeatability

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13
Q

two reasons we use science

A

to glorify God; man’s benefit

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14
Q

study of reasoning

A

logic

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15
Q

a statement of fact

A

proposition

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16
Q

formula for Newton’s second law of motion

A

F = ma (force equals mass times acceleration)

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17
Q

formula for pressure

A

P = F / A (pressure equals force divided by area)

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18
Q

branch of physics developed since 1900

A

modern physics

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19
Q

a model of a design used for testing

A

prototype

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20
Q

use of science to solve practical problems

A

technology

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21
Q

occurs when someone attacks the person making an argument instead of challenging the person’s facts

A

ad hominem fallacy

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22
Q

property of matter that makes it resist changes in motion

A

inertia

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23
Q

a push or pull

A

force

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24
Q

anything that has inertia

A

matter

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25
Q

substance of the physical world

A

matter

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26
Q

the amount of space that matter takes up

A

volume

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27
Q

the amount of inertia an object has

A

mass

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28
Q

the amount of matter in an object

A

mass

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29
Q

the most important part of an equation

A

the equal sign

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30
Q

the “language of science”

A

math

31
Q

for measured data to be meaningful, it must include ____

A

units

32
Q

the system with meticulously defined standards

A

SI system

33
Q

the SI unit of time

A

second

34
Q

the SI unit of length

A

meter

35
Q

the SI unit of mass

A

kilogram

36
Q

the SI unit of work

A

Joule

37
Q

the SI unit of force

A

Newton

38
Q

the SI unit of power

A

watt

39
Q

coldest temperature possible at which molecular vibration ceases

A

absolute zero

40
Q

a measure with both magnitude and direction

A

vector (oh yeah)

41
Q

the study of motion and forces

A

dynamics

42
Q

the change in position divided by time

A

velocity

43
Q

any change in velocity

A

acceleration

44
Q

an acceleration opposite the direction of motion

A

deceleration

45
Q

the book in which Newton published his findings

A

Principia

46
Q

the third law of motion states _______

A

for every action, there is an equal and opposite reaction

47
Q

acceleration due to gravity

A

9.81 meters per second squared

48
Q

center-seeking force

A

centripetal force

49
Q

the speed at which an object will stop speeding up

A

terminal velocity

50
Q

matter that has no definite shape and can flow

A

fluid

51
Q

theory stating that all molecules of a substance are in constant motion and move more rapidly as the object is heated

A

kinetic theory of matter

52
Q

the attraction between molecules of the same substance

A

cohesion

53
Q

the attraction between molecules of different substances

A

adhesion

54
Q

the tendency of a liquid to pull atoms or molecules near the surface back into the liquid, forming a “skin” or film on the surface

A

surface tension

55
Q

the phenomenon in which liquids in thin tubes rise above or fall beneath their own levels because of adhesion and cohesion

A

capillarity

56
Q

a curved surface of a liquid formed because of a difference in strength between the cohesion of the fluid molecules and the glass molecules

A

meniscus

57
Q

force exerted per unit of area

A

pressure

58
Q

the SI unit of pressure

A

Pascal

59
Q

two factors that affect gravitational pressure

A

density and depth

60
Q

the principle stating that a pressure increase applied to a fluid inside a closed container will be distributed equally throughout the container

A

Pascal’s principle

61
Q

a device that uses Pascal’s principle to multiply a force by using a small-diameter input piston and a large-diameter output piston connected by a liquid-filled reservoir

A

hydraulic press

62
Q

the ability of a gas to be easily squeezed and compacted into a smaller container

A

compressibility

63
Q

the law stating that a gas’s volume and pressure are inversely proportional when the temperature is held constant

A

Boyle’s law

64
Q

the law stating that the volume and temperature of a gas are directly proportional when a pressure is held constant

A

Charles’s law

65
Q

states that gas temperature and pressure are directly related when volume is held constant

A

Amonton’s law

66
Q

the gravitational pressure within a sea of air

A

atmospheric pressure

67
Q

an empty space with no matter

A

vacuum

68
Q

device used to measure air pressure

A

barometer

69
Q

momentum formula

A

p = mv (momentum equals mass times velocity)

70
Q

work formula

A

W = Fd (work equals force times distance)

71
Q

power formula

A

p = W / t (power equals work divided by time)

72
Q

Charles’s law formula

A

V1/T1 = V2/T2

73
Q

Boyle’s law formula

A

P1V1 = P2V2

74
Q

Amonton’s law

A

P1/T1 = P2/T2

9th Grade Flashcards (76 decks)

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