Q1
What unit measures length?
AMetres
BKilograms
CSeconds
DLitres
ICSEClass 6 (ICSE)ScienceCh 2 · Topic 2
Practice and Revision - Physical Quantities and Measurement
Let us practise and revise what we learned about physical quantities and measurement. Physical quantities, like length, mass, and time, are
Core concept
Length is measured in metres, mass in kilograms, and time in seconds, using the International System of Units (SI units).
How it works
We use instruments like rulers for length, weighing scales for mass, and clocks or stopwatches for time.
Why it matters
Accurate measurement is essential in science to ensure experiments and observations can be compared and repeated reliably.
Key detail
Understanding physical quantities and their units helps us describe the world precisely and conduct scientific investigations.
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Quick notes
• Physical quantities include length, mass and time.
• SI units: metres, kilograms, seconds.
• Rulers measure length.
• Weighing scales measure mass.
• Clocks measure time.
• Accurate measurement ensures reliable science.
• It allows experiments to be compared.
• Physical quantities help describe the world precisely.