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PHYSICS-middle school > MATTER AND MEASUREMENTS > Flashcards

MATTER AND MEASUREMENTS Flashcards

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1
Q

Define matter

A

Matter is defined as anything that occupies space and has mass

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2
Q

The universe is composed of ?

A

Matter and Energy

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3
Q

Are matter and energy interconvertible?

A

yes

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4
Q

Name the Greek thinker who first defined the atom?

A

Democritus

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5
Q

what is a molecule made up of?

A

a molecule is made up of one or more atoms of the same kind or different kind

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6
Q

A molecule made up of one atom is known as ____________.

A

MONOATOMIC MOLECULE

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7
Q

GIVE TWO EXAMPLES OF MONOATOMIC MOLECULES

A

NEON

ARGON

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8
Q

WHAT IS A MOLECULE THAT IS MADE UP OF TWO ATOMS REFERRED TO AS?

A

DIATOMIC MOLECULE

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9
Q

NAME THREE DIATOMIC MOLECULES

A

OXYGEN
NITROGEN
HYDROGEN

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10
Q

IF A MOLECULE IS MADE UP OF MORE THAN TWO ATOMS IT IS CALLED AS

A

POLYATOMIC MOLECULE

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11
Q

GIVE AN EXAMPLE OF A POLYATOMIC MOLECULE

A

water molecule

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12
Q

What are the four characteristics of a molecule?

A
  1. SMALL IN SIZE
  2. SPACES BETWEEN THEM
  3. RANDOM MOTION
  4. ALWAYS ATTRACT EACHOTHER
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13
Q

THE DIAMETER OF A WATER MOLECULE IS_________

A

1.45 X 10-10 meter

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14
Q

THE SPACING BETWEEN PARTICLES OF MATTER IS CALLED?

A

INTERMOLECULAR SPACE

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15
Q

THE PARTICLES OF MATTER ARE IN A RANDOM MOTION -WHAT PATH DO THEY TAKE?

A

ZIG -ZAG PATH

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16
Q

Particles of matter always attract other particles in the surroundings this force of attraction is known as?

A

INTERMOLECULAR FORCE

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17
Q

WHY IS IT EASIER TO MOVE THE HAND THROUGH WATER THAN THROUGH GLYCERINE?

A

THE MOLECULAR FORCES ARE MORE IN GLYCERINE THAN IN WATER

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18
Q

WHY IS IT EASY TO BREAK CHALK INTO PIECES BUT DIFFICULT TO BREAK A PIECE OF COAL?

A

THE INTERMOLECULAR FORCES ARE LESS IN CHALK AS COMPARED TO COAL

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19
Q

WHY IS IT EASY TO MOVE A BODY THROUGH AIR THAN IN WATER?

A

THE INTERMOLECULAR FORCES IN AIR ARE VERY LESS AS COMPARED TO WATER

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20
Q

IS THE FORCE OF ATTRACTION BETWEEN PARTICLES MORE IN SOLIDS THAN LIQUIDS?

A

YES

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21
Q

IS THE FORCE OF ATTRACTION BETWEEN LIQUID PARTICLES MORE THAN GASE0US PARTICLES

A

YES

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22
Q

WHAT IS FORCE OF COHESION?

A

THE FORCE OF ATTRACTION BETWEEN PARTICLES OF THE SAME

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23
Q

WHAT IS ADHESIVE FORCE?

WHAT IS FORCE F ADHESION?

A

THE FORCE OF ATTRACTION BETWEEN PARTICLES OF TWO DIFFERENT SUBSTANCES

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24
Q

WHAT IS A NANO PARTICLE?

A

A MOLECULE OR CLUSTER OF SEVERAL MOLECULES IS CALLED NANOPARTICLE

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25
Q

WHAT IS AIR?

A

AIR IS A MIXTURE OF GASES

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26
Q

WHAT ARE THE THREE STATES OF WATER?

A

SOLID-Ice

LIQUID-

GAS-steam

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27
Q

Name the three properties that decide the state of a substance ?

A
  1. intermolecular space
  2. intermolecular force of attraction
  3. movement of molecules
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28
Q

The value obtained on measuring a quantity is called?

A

MAGNITUDE

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29
Q

WHAT IS PHYSICAL QUANTITY?

A

A QUANTITY THAT CAN BE MEASURED

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30
Q

WHAT ARE THE FOUR BASIC PHYSICAL QUANTITIES?

A

LENGTH

TIME

MASS

TEMPERATURE

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31
Q

THE SI UNIT OF LENGTH IS?

A

METRE

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32
Q

THE SI UNIT OF MASS IS?

A

KILOGRAM

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33
Q

THE SI UNIT OF TIME IS?

A

SECOND

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34
Q

THE SI UNIT OF TEMPERATURE IS?

A

KELVIN

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35
Q

SYMBOL FOR KILOGRAM?

A

Kg

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36
Q

SYMBOL FOR METRE

A

m

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37
Q

SYMBOL FOR SECOND

A

s

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38
Q

THE UNIT OF CURRENT IS?

A

Ampere

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39
Q

WHAT IS MEANT BY LENGTH?

A

THE DISTANCE BETWEEN TWO POINTS.

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40
Q

DEFINE A METER?

A

DISTANCE TRAVELLED BY LIGHT IN

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41
Q

LONG LENGTHS ARE EXPRESSED AS?

A

KILOMETRE

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42
Q

SHORT LENGTHS ARE EXPRESSED AS ?

A

CENTIMETRE OR MILLIMETRE

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43
Q

THE SYMBOL FOR KILOMETRE IS________

A

km

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44
Q

THE SYMBOL FOR CENTIMETRE IS____________

A

cm

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45
Q

THE SYMBOL FOR MILLIMETRE IS______________

A

mm

46
Q

IN THE PAST THE THREE MEASURING SYSTEMS WERE?

A

C.G.S SYSTEM

M.K.S SYSTEM

F.P.S SYSTEM

47
Q

IN THE F.P.S SYSTEM THE UNIT OF LENGTH IS?

A

FOOT

48
Q

THE SMALLER UNIT OF FOOT IS?

A

INCH

49
Q

THE BIGGER UNIT OF FOOT IS ?

A

YARD

50
Q

CONVERT FOOT TO INCHES

A

1 FOOT =12 INCHES

51
Q

CONVERT YARD TO FOOT

A

1 YARD=3 FEET

52
Q

THE SYMBOL OF FOOT IS ?

A

ft

53
Q

THE SYMBOL OF YARD IS_____________

A

yd

54
Q

CONVERT INCH TO cms

A

1 inch ~2.54 cms

55
Q

A metre ruler can measure lengths upto?

A

1mm

56
Q

Name the instruments used to measure lengths less than 1mm

A

VERNIER CALLIPERS

SCREW GAUGE

57
Q

VERNIER CALLIPERS CAN MEASURE LENGTH UPTO?

A

0.1 mm

58
Q

A SCREW GAUGE CAN MEASURE LENGTH UPTO?

A

0.01mm

59
Q

What is the mass of a body?

A

The quantity of matter contained in it

60
Q

The bigger unit of mass is?

A

QUINTAL

61
Q

THE UNIT OF MASS BIGGER THAN QUINTAL IS______________

A

METRE TONNE

62
Q

CONVERT QUINTAL TO KILOGRAMS

A

1 QUINTAL=100 kg

63
Q

CONVERT METRIC TONNE TO QUINTAL

A

1 METRIC=10 QUINTAL TONNE

64
Q

1 DECAMETRE IS EQUAL TO HOW MANY METRES?

A

10 METRES

65
Q

I HECTAMETRE IS EQUAL TO HOW MANY METRES?

A

100 METRES

66
Q

IN THE F.P.S SYSTEM THE UNIT OF MASS IS?

A

POUND

67
Q

CONVERT POUNDS TO GRAMS

A

1 POUND =453.59 gm

68
Q

Name four devices used for measuring mass

A

BEAM BALANCE

ELECTRONIC BALANCE

GROCERS BALANCE

PHYSICAL BALANCE

69
Q

GOLDSMITHS REQUIRE AN ACCURATE AND SENSITIVE BALANCE .WHICH ONE DO THEY USE?

A

PHYSICAL BALANCE

70
Q

WHAT IS TIME?

A

THE INTERVAL BETWEEN TWO INSTANCES OR EVENTS

71
Q

WHAT IS “SOLAR DAY”?

A

THE TIME TAKEN BY EARTH TO COMPLETE ONE ROTATION ABOUT ITS OWN AXIS.

72
Q

THE HOTNESS OR COOLNESS OF AN OBJECT DEPENDS ON__________________________

A

THE DIRECTION OF THE FLOW OF HEAT

73
Q

HOW DOES HEAT ALWAYS FLOW?

A

FROM HIGH TEMPERATURE TO LOW TEMPERATURE

74
Q

IF WE TOUCH AN OBJECT IT APPEARS TO BE HOT,HOW DOES THE HEAT FLOW ?

A

FROM THE OBJECT TO OUR HANDS

75
Q

IF WE TOUCH AN OBJECT AND IT FEELS COLD .HOW DOES THE HEAT MOVE?

A

FROM OUR HANDS TO THE OBJECT

76
Q

WHAT IS TEMPERATURE?

A

IT IS THE MEASURE OF DEGREES OF HOTNESS OR COLDNESS OF AN OBJECT

77
Q

WHAT IS THE SYMBOL OF KELVIN?

A

CAPITAL K

78
Q

APART FROM KELVIN WHICH ARE THE OTHER TWO COMMONLY USED UNITS FOR TEMPERATURE?

A

CENTIGRAD o C

FAHRENHEIT o F

79
Q

The Fahrenheit unit is named after which scientist?

A

GABRIEL DANIEL FAHRENHEIT

80
Q

THE CENTIGRADE UNIT IS NAMED AFTER WHICH SCIENTIST?

A

ANDREWS CELCIUS

81
Q

WHAT IS ICE POINT

A

FREEZING POINT OF WATER

82
Q

WHAT IS STEAM POINT

A

BOILING POINT OF WATER

83
Q

THE CENTIGRADE SCALE IS ALSO KNOWN AS?

A

CELSIUS SCALE 0 0 C

84
Q

THE BOILING POINT OF WATER ON THE CELCIUS SCALE?

A

100 o C

85
Q

Is one degree on the Kelvin Scale equal to one degree on the Celcius scale?

TRUE/FALSE

A

TRUE

86
Q

ONE DEGREE ON THE CELCUS SCALE IS EQUAL TO __________ DEGREES ON THE FARENHEIT SCALE

A

1.8 o F

87
Q

THE LABORATORY THERMOMETER HAS 3 PARTS NAME THEM

A

BULB

STEM

CAPILLARY TUBE

88
Q

THE BULB OF A THERMOMETER IS FILLED WITH__________________.

A

MERCURY

89
Q

THE LABORATORY THERMOMETER ,HAS MARKINGS FROM?

A

-10 o C to 110 o C

90
Q

the ice point on the fahrenheit scale is__________

A

32 o F

91
Q

Steam point on a Farenheit scale is?

A

212 o F

92
Q

Doctors use a special thermometer called ______________

A

clinical thermometer

93
Q

the clinical thermometers have a small bend in the stem ,just above the bulb .this bend is called_______________

A

constriction

94
Q

why do clinical thermometers have a constriction?

A

to prevent the mercury from dropping back to the bulb when the reading is being taken

95
Q

What is the normal temperature of the human body?

A

37 o C

OR

98.6 o F

96
Q

the markings on a clinical thermometer are from__________

A

35 o C to 42 o C

OR

95 o F to 110 o F

97
Q

Nowadays instead of mercury thermometres what other thermometers are used to measure body temperature?

A

DIGITAL THERMOMETERS

98
Q

CAN A CLINICAL THERMOMETRE BE USED TO MEASURE BOILING WATER?

A

NO

AS CLINICAL THERMOMETERS CAN MEASURE ONLY UPTO 42 oC

99
Q

WHAT ARE FUNDAMENTAL QUANTITIES?

A

QUANTITIES LIKE LENGTH, MASS, TIME AND TEMPERATURE ARE INDEPENDENT OF EACHOTHER AND ARE KNOWN AS FUNDAMENTAL QUANTITIES

100
Q

WHAT ARE DERIVED QUANTITIES?

A

QUANTITIES LIKE VOLUME,AREA AND SPEED DEPEND ON FUNDAMENTAL QUANTITIES ARE KNOWN AS DERIVED QUANTITIES

101
Q

WHAT IS THE FORMULA FOR AREA?

A

Area=length X breadth

102
Q

what is the formula for volume

A

Volume=length x breadth x height

103
Q

what is the formula for speed?

A

speed = distance

time

104
Q

What is Area?

A

the surface occupied by an object is called area

105
Q

Formula for area of a rectangle?

A

l x b

106
Q

Formula for area of a square

A

l x l

107
Q

formula for area of triangle

A

Area of triangle= ½ x l x h

108
Q

formula for area of circle

A

Area of circle=

109
Q

what is the value of (pi)

A

3.14

110
Q

1 are is equal to?

A

100 m 2

111
Q

1 hectare is equal to?

A

10000 m2

PHYSICS-middle school (2 decks)

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