Units and Measurement

Subject: Science

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Lesson Info

  • Notes 3
  • Videos 9
  • Exercises 26
  • Practice Test 20
  • Skill Level Medium


Upon completion of this lesson, students should be able to:

  • Define units and know the importance of measurement.
  • Define various system of measurements.
  • Solve simple numerical problems related to measurement.



The process of comparing an unknown physical quantity with known standard quantity is called measurement. This note contains information about measurement and different quantities related to measurement.

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Measurement of Mass and Weight

Mass is the quantity of matter contained in a body. The weight of an object is the gravitational force between earth and object. Weight is a force. This note contains information about the measurement of mass and weight. Learn More

Measurement of Time

The duration between any two events is called time. The SI unit of time is second. This note provides an information about the measurement of time. Learn More

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