Home › Worksheets › IGCSE Year 7 Physics › Units and Measurement Prepared by Mohsim Digital Education
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The SI unit of length is the metre and the SI unit of time is the second, so this Year 7 sheet opens with the two base units of the system. The answers record the kilogram and 1000 m as a kilometre conversion.
Key Takeaways
The SI unit of length is the metre (Q1).
The SI unit of time is the second (Q2).
Q5 records 1000 m as a kilometre conversion.
Section A: Multiple Choice Questions (1 Mark Each)
Choose the correct option for each question.
1.
The SI unit of length is the
(a) metre (b) kilometre (c) centimetre (d) millimetre
2.
The SI unit of time is the
(a) second (b) minute (c) hour (d) day
3.
The SI unit of mass is the
(a) kilogram (b) gram (c) tonne (d) newton
4.
Which instrument is used to measure the mass of an object?
(a) a balance (b) a ruler (c) a stopwatch (d) a thermometer
5.
1 kilometre is equal to
(a) 1000 m (b) 100 m (c) 10 m (d) 10,000 m
6.
A measuring cylinder is used to measure
(a) the volume of a liquid (b) the mass of an object (c) the temperature (d) the time taken
Section B: Short Answer Type Questions (2 Marks Each)
Show all steps clearly.
7.
State the SI unit of length, time and mass.
8.
How many metres are there in 2.5 km?
9.
Which instrument is used to measure the volume of a liquid?
10.
What does a stopwatch measure?
11.
What is the SI unit of volume?
12.
What is the difference between mass and weight?
13.
How do you find the volume of an irregular solid using a measuring cylinder?
14.
Name the instrument used to measure time precisely.
Section C: Numericals & Word Problems (3 Marks Each)
Apply the concepts to solve the problems. Show all working.
15.
Convert 3.5 km to metres.
16.
Convert 4500 mm to metres.
17.
A measuring cylinder initially reads 40 cm³. An irregular stone is dropped in and the reading rises to 65 cm³. Find the volume of the stone.
18.
A body has a mass of 250 g. Convert this mass to kilograms.
19.
Convert 2 hours to seconds.
20.
A liquid has a volume of 0.5 m³. Convert this volume to litres (1 m³ = 1000 L).
Answer Key
1. a) metre
2. a) second
3. a) kilogram
4. a) a balance
5. a) 1000 m
6. a) the volume of a liquid
7. Refer to solution guide.
8. Refer to solution guide.
9. Refer to solution guide.
10. Refer to solution guide.
11. Refer to solution guide.
12. Refer to solution guide.
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14. Refer to solution guide.
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19. Refer to solution guide.
20. Refer to solution guide.
End of Worksheet
People Also Ask
What is the SI unit of length?
The metre, option (a) in this worksheet (Q1).
What is the SI unit of time?
The second, option (a) in this worksheet (Q2).
How many metres are there in a kilometre?
1000 m, option (a) in this worksheet (Q5).