Summary

• Description:

  The PDF document comprises Form 1 Physics notes on the topic of Measurement I.

  The topics and sub-topics covered in the document include:

  • Basic Concepts of Measurement
    • Measurement requires defining the quantity to be measured and its units.
    • The International System of Units (SI units) was established in 1971.
    • There are seven basic quantities, and other quantities derived from them are known as derived quantities.
    • The seven basic quantities listed are Length, Mass, Time, Electric current, Thermodynamic temperature, Luminous intensity, and Amount of substance, along with their respective SI units and symbols.
  • Measurement of Physical Quantities
    • Length: Defined as the distance between two points. Its SI unit is the metre (m). It is measured using instruments like a metre rule or tape measure.
    • Area: Defined as the measure of the extent of a surface and is a derived quantity. Its SI unit is the square metre ($m^2$).
    • Volume: The amount of space occupied by matter, with the SI unit being the cubic metre ($m^3$). It can be measured using tools like a measuring cylinder, pipette, or burette.
    • Mass: Defined as the quantity of matter in a substance. Its SI unit is the Kilogram (kg) and it is measured using a beam balance.
    • Time: The measure of an event's duration, with the SI unit being the second (s). It is measured with devices like clocks and stopwatches.
  • Density and Relative Density
    • Density: Defined as mass per unit volume, with SI units of $kg/m^3$. The notes provide the formula and worked examples for calculating density. A table of densities for common substances is also included.
    • Relative Density: Defined as the ratio of a substance's density to the density of water. It is a dimensionless quantity measured using a relative density bottle.
    • Density of Mixtures: A formula and a worked example are provided to show how to calculate the density of a mixture.
  • Accuracy and Errors
    • Accuracy is defined as the closeness of a measurement to its true value.
    • An error is the deviation from the correct value, and the smaller the error, the more accurate the measurement.

  These notes are comprehensive, neat, and printable, making them an excellent resource for students beginning their study of physics. They are also highly suitable for teachers to use for lesson preparation, providing a structured and clear foundation for the topic, complete with definitions, formulas, and worked examples.

• Category:

  Lesson Notes
• Level:

  Form 1
• Subject:

  PHYSICS

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