Grade 9 Physics – Unit 1: Measurement and Experimentation – One Mark Questions (Fill in the Blanks)

Title : Measurement and Experimentation

One Mark Questions

🔹 Part A – Units (Length, Mass and Time)
Units of Length (Large and Small)

1.​ One Astronomical Unit (AU) is equal to __________ metre.
Answer: 1.496 × 10¹¹
2.​ One light year is equal to __________ metre.
Answer: 9.46 × 10¹⁵
3.​ One parsec is equal to __________ metre.
Answer: 3.086 × 10¹⁶
4.​ One angstrom is equal to __________ metre.
Answer: 10⁻¹⁰
5.​ One fermi is equal to __________ metre.
Answer: 10⁻¹⁵
6.​ One kilometre is equal to __________ metre.
Answer: 1000
7.​ One metre is equal to __________ centimetre.
Answer: 100
8.​ One centimetre is equal to __________ metre.
Answer: 10⁻²
9.​ One metre is equal to __________ millimetre.
Answer: 1000
10.​ One millimetre is equal to __________ metre.
Answer: 10⁻³
11.​ One micrometre is equal to __________ metre.
Answer: 10⁻⁶
12.​ One nanometre is equal to __________ metre.
Answer: 10⁻⁹