Measurement Tools and Techniques Quiz

A tool commonly used in labs to measure the length of objects or the distance between two points.

The smallest unit of measurement that can be accurately read using a metre rule.

One metre is equivalent to 100 centimeters.

Each centimeter on a metre rule is divided into 10 smaller divisions called millimetres.

When taking a measurement, ensure your eye is directly above the mark on the metre rule to avoid parallax error.

Error that occurs when the eye is not positioned directly above the measurement mark, leading to inaccurate readings.

A flexible tape used for measuring length, typically in metres and centimetres.

The process of determining the length of an object or the distance between two points using an instrument.

A measuring instrument used to measure lengths with greater accuracy than a metre rule. It consists of two jaws, a fixed jaw with a main scale and a movable jaw with a Vernier scale.

The fixed jaw of a Vernier Callipers has a main scale marked in centimetres and millimetres. It helps to read the main measurement.

The moveable jaw of a Vernier Callipers has a Vernier scale with 10 divisions. It helps to read the finer measurement.

The difference between one small division on the main scale and one vernier scale division. It is the smallest measurement possible with the instrument. For Vernier Callipers, the least count is 0.1 mm.

The measurement made using a measuring tape can typically be accurate to 1 mm. However, for measurements with greater accuracy, instruments like Vernier Callipers are used.

The range of values that a measuring instrument can measure.

The distance between two consecutive threads on a screw.

A hollow cylinder that acts as a nut in a micrometer, moving along a line called the index line.

A part of a micrometer with a threaded spindle inside, used to move the spindle along the index line.

The movement of the spindle in a micrometer corresponding to one complete rotation of the thimble.

A line marked on the sleeve of a micrometer along which the spindle moves.

The smallest measurement that a screw gauge can measure. It is calculated by dividing the pitch of the screw by the number of divisions on the circular scale.

The distance between two consecutive threads of the screw gauge. It is usually measured in millimeters.

Error that occurs when the zero of the circular scale does not coincide with the zero of the main scale when the jaws of the screw gauge are closed.

Zero error that occurs when the zero of the circular scale is behind the index line of the main scale. It is a positive value and is calculated by multiplying the number of divisions that have not crossed the index line by the least count.

Zero error that occurs when the zero of the circular scale has crossed the index line of the main scale. It is a negative value and is calculated by multiplying the number of divisions that have crossed the index line by the least count.

The process of determining the zero error of a screw gauge by closing the jaws and observing the position of the circular scale relative to the main scale.

The process of measuring the diameter of a wire using a screw gauge. This involves closing the jaws around the wire, reading the main scale and circular scale, and applying any necessary corrections for zero error.

A tool used to measure the thickness or diameter of small objects with high precision. It consists of a main scale, a circular scale, and a screw.

A type of instrument used in laboratories to accurately determine the mass of objects by comparing them to known reference weights.

These screws allow for precise adjustment of the balance beam, ensuring it is perfectly horizontal when not in use. This ensures accurate measurements.

This is the central part of the balance. It is a rigid bar that rests on a fulcrum, allowing the pans to move freely.

Also known as the pivot point. It's the point on which the beam rests, allowing it to rotate and achieve balance.

These are the vertical supports that hold the beam and the pans.

These are the adjustable weights that are placed on the balance pans to match the unknown mass.

Part of the beam that helps determine if the balance is level, pointing to 'zero' when the beam is horizontal.

In a physical balance, this is a vertical line that hangs from the balance's beam. It is used to ensure the balance is perfectly aligned vertically.

A way to represent a number as a value between 1 and 10 multiplied by a power of 10. This method is used to simplify very large or very small numbers.

The quantities that are defined independently and form the foundation for all other measurements. They are the basic building blocks of the measurement system.

Quantities that are expressed in terms of base quantities. They are derived from combinations of base quantities.

The international system of units used for standardized measurements worldwide.

The digits in a measurement that are known with certainty, plus the first uncertain digit. They represent the precision of the measurement.