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# ICSE Class 9 Physics Chapter 1 Measurements and Experimentation Revision Notes

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## ICSE Class 9 Physics Chapter 1 Revision Notes: Measurements and Experimentation

ICSE Class 9 Physics Chapter 1 Measurements and Experimentation Revision Notes are one of the most important pieces of study material that students can receive as it will aid them to study better and reduce the level of stress that students face during the hectic year.

Swiflearn provides Revision Notes and keynotes chapter wise for the ICSE board exam in an easy-to-understand, free downloadable PDF format so students can use it for their studies and score better in their board exams. The ICSE Class 9 Revision Notes are made for the main subjects of Science and Maths. These core subjects are very critical as they are the stepping stones and plays a crucial role in student’s future. They might be tricky for students. The ICSE Class 9 Physics Revision Notes for each chapter will enable them to have an expert studying pattern with which they can enjoy learning the subject and perform better in the exams.

ICSE Class 9 Physics Chapter 1 Measurements and Experimentation Revision Notes are designed  keeping in my mind the exam pattern and syllabus of NCERT 2020-21. Students can download the PDF for free and practice the questions to score well in the coming exams.

## ICSE Class 9 Physics Chapter 1 Revision Notes: Measurements and Experimentation

System of Units and units in S.I. system

The International System of Units (SI), is the modern form of the metric system and is the most widely used system of measurement.

Measurement:

Measurement is the process of comparison of the given physical quantities with the known standard quantity of the same nature.
The result of measurement can be expressed in terms of the following two terms:
1. The unit in which the quantity is to be measured.
2. The numerical value which expresses, how many times the unit is contained in the given quantity.

Physical quantity = (numerical value) x (unit)

Unit:

Unit is the quantity of a constant magnitude which is used to measure the magnitudes of other quantities of the same nature.