Grade 9 Physics
Unit 1: Measurement and Experimentation
Short and Long Answer Questions
🔹 2 Mark Questions
1.Define measurement.
Measurement is the comparison of an unknown physical quantity with a
known standard quantity of the same nature.
2.What is a unit?
A unit is a standard quantity used to measure a physical quantity.
3.What are fundamental quantities?
Fundamental quantities are independent physical quantities that are not
derived from other quantities.
4.What are derived quantities?
Derived quantities are physical quantities obtained by combining
fundamental quantities.
5.What are fundamental units? Give examples.
Fundamental units are the units of fundamental quantities.
Examples: metre, kilogram, second.
6.What are derived units? Give examples.
Derived units are obtained from fundamental units.
Examples: m/s, m², newton.
7.Write the SI unit of mass.
The SI unit of mass is kilogram (kg).
Unit 1: Measurement and Experimentation
Short and Long Answer Questions
🔹 2 Mark Questions
1.Define measurement.
Measurement is the comparison of an unknown physical quantity with a
known standard quantity of the same nature.
2.What is a unit?
A unit is a standard quantity used to measure a physical quantity.
3.What are fundamental quantities?
Fundamental quantities are independent physical quantities that are not
derived from other quantities.
4.What are derived quantities?
Derived quantities are physical quantities obtained by combining
fundamental quantities.
5.What are fundamental units? Give examples.
Fundamental units are the units of fundamental quantities.
Examples: metre, kilogram, second.
6.What are derived units? Give examples.
Derived units are obtained from fundamental units.
Examples: m/s, m², newton.
7.Write the SI unit of mass.
The SI unit of mass is kilogram (kg).
