Measurement and Experimentation Quiz

True (A)

Length, mass, and time

<p>kilogram (D)</p> Signup and view all the answers

<p>pound</p> Signup and view all the answers

<p>Centimetre = C.G.S. System Kilogram = M.K.S. System Foot = F.P.S. System Gram = C.G.S. System</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>0.01 meters</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Volume (A)</p> Signup and view all the answers

<p>s</p> Signup and view all the answers

<p>A convenient size makes the measurement easier and more practical. It avoids using extremely large or small numbers, making the process simpler and less prone to errors.</p> Signup and view all the answers

<p>millimeter = 10^-3 m micrometer = 10^-6 m nanometer = 10^-9 m angstrom = 10^-10 m</p> Signup and view all the answers

<p>quintal (C), metric tonne (D)</p> Signup and view all the answers

<p>centimeter</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>least count</p> Signup and view all the answers

<p>Measuring the internal diameter of a hollow cylinder (A)</p> Signup and view all the answers

<p>The least count is 0.5 seconds. This is calculated by dividing the range (5 seconds) by the number of divisions (10).</p> Signup and view all the answers

<p>m.s-1</p> Signup and view all the answers

<p>Main scale = To measure the length correct up to 1mm Vernier scale = To measure the length correct up to 0.1mm Outer/Outside/External jaws = To measure the length of a rod, diameter of a sphere, external diameter of a hollow cylinder Inner/Inside/Internal jaws = To measure the internal diameter of a hollow cylinder or pipe Tail/Strip/Projection = To measure the depth of a small beaker, or other internal dimensions</p> Signup and view all the answers

<p>main scale, Vernier scale</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>0.9 mm (A)</p> Signup and view all the answers

<p>L.C. = Value of one main scale division (x) / Total number of divisions on Vernier</p> Signup and view all the answers

<p>Main scale = Graduated scale with larger divisions Vernier scale = Auxiliary scale with smaller divisions Least count = Smallest measurement possible with the instrument Zero error = Error caused by misalignment of the zero marks in a closed position</p> Signup and view all the answers

<p>Positive zero error (A)</p> Signup and view all the answers

<p>6</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Pitch scale and Circular scale (A)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>The circular scale helps to measure fractions of the pitch of the screw, providing greater precision in the measurement.</p> Signup and view all the answers

<p>pitch</p> Signup and view all the answers

The process of comparing a physical quantity with a known standard of the same nature.

A constant magnitude used to measure other quantities of the same nature.

Units that are independent and cannot be derived from other units, like kilogram or meter.

Units formed from fundamental units, expressed in terms of them, like square meter.

A system of units where length is in centimeters, mass in grams, and time in seconds.

A unit system with length in feet, mass in pounds, and time in seconds.

A system of units where length is in meters, mass is in kilograms, and time is in seconds.

The Standard International system of measurement, incorporating fundamental and derived units.

The S.I. unit of length is the metre (m).

The C.G.S. unit of length is the centimetre (cm).

1 millimetre (mm) is equal to 10^-3 metres.

One astronomical unit is the mean distance between the Earth and the Sun.

The S.I. unit of mass is the kilogram (kg).

The C.G.S. unit of mass is the gram (g), equal to 10^-3 kg.

The S.I. unit of time is the second (s).

1 hour (h) is equal to 60 minutes or 3600 seconds.

Units are always written with a lower initial letter, e.g. kilogram, metre.

Derived units formed by division are expressed using negative powers, e.g. m/s as m.s⁻¹.

Short forms of units are never written in plural, e.g. 10m not 10ms.

The smallest measurement that can be accurately read on an instrument's scale, e.g. 0.5s for a stopwatch.

Measuring tool for length, internal & external diameters, and depth.

Measures length accurately up to 1mm using the main scale of vernier callipers.

Measures length accurately up to 0.1mm using the vernier scale of callipers.

The primary scale of the Vernier callipers, typically measured in millimeters.

The smaller divisions on the Vernier scale that provide greater accuracy than the main scale.

A discrepancy when the zero marks of the scales do not align when jaws are closed.

Occurs when the zero mark of the Vernier scale is to the right of the main scale’s zero mark.

Least count is calculated using L.C. = 1 M.S.D. - 1 V.S.D.

The length of n divisions on the Vernier is equal to (n-1) divisions on the main scale.

Occurs when the zero mark of the Vernier scale is to the left of the main scale's zero mark.

A precise measuring instrument using a calibrated screw for small dimensions.

The distance the screw moves on the main scale with one complete rotation of the circular scale.

A scale on the thimble of the screw gauge, with divisions that help read measurements accurately.

The smallest reading that can be measured accurately with an instrument.

An error that occurs when turning the thimble but the screw remains stationary initially.

The least count of a micrometer screw gauge, indicating the smallest measurement it can read.

When the circular scale makes one full turn, it causes a specific distance movement of the screw.