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Physics S3 > Measurement > Flashcards

Measurement Flashcards

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1
Q

What is a physical quantity

A

A physical quantity is a quantity that can be measured. It consists of a numerical magnitude and a unit.

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2
Q

What is a vector quantity

A

Vector Quantities are Physical quantities that have
magnitude and direction, E.g. displacement, weight,
acceleration and force.

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3
Q

What is a scalar quantity

A

Scalar Quantities are Physical quantities that have
magnitude only. E.g. mass, temperature, time, speed and
distance.

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4
Q

Prefix (tera-) answer: factor, symbol

A

10^12, T

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5
Q

Prefix (giga-) answer: factor, symbol

A

10^9, G

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6
Q

Prefix (mega-) answer: factor, symbol

A

10^6, M

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7
Q

Prefix (kilo-) answer: factor, symbol

A

10^3, k

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8
Q

Prefix (deci-) answer: factor, symbol

A

10^-1, d

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9
Q

Prefix (centi-) answer: factor, symbol

A

10^-2, c

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10
Q

Prefix (milli-) answer: factor, symbol

A

10^-3, m

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11
Q

Prefix (micro-) answer: factor, symbol

A

10^-6, u (with tail)

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12
Q

Prefix (nano-) answer: factor, symbol

A

10^-9, n

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13
Q

Measuring Instruments (Tape Measure) answer: suitable for measuring-

A

A few metres

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14
Q

Measuring Instruments (Metre rule) answer: suitable for measuring-

A

Several centimetres

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15
Q

Measuring Instruments (Vernier Callipers) answer: suitable for measuring-

A

A few centimetres

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16
Q

Measuring Instruments (Micrometre Screw Gauge) answer: suitable for measuring-

A

A few millimetres

17
Q

How to reduce random error

A

Repeat the measurement and take the average value of the measurements

18
Q

How to correct zero error

A

The 0cm mark on the ruler may not be exactly at the end of the ruler

19
Q

What is an oscillation and what is the time taken known as. Also, what is it dependent on

A

Each to-and-fro motion is one oscillation, the time taken for one complete oscillation is known as the period, The period is dependent on the length

Physics S3 (15 decks)

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