1. 1st Year Physics
Unit 1 Measurement

2. Instruments of Measurement
Ruler/Meter stick
Stop Clock
Thermometer
Scales
Measuring Cylinder
Opisometer
Trundle wheel
Callipers

3. Basics Units in Physics

4. Length

5. Measuring Length.

6. Using a Ruler/Metre Rule Can you spot any error being made in measuring this wire?
Task: Use a ruler/meter rule to measure the length and breath of your copy in millimetres (mm)

7. Opisometer
Task: Use an Opisometer & Ruler to work out the length of a curved line to the nearest cm

8. Trundle Wheel.
Task: Use a Trundle Wheel to measure the length of the corridor to the nearest metre (m)

9. Vernier Calipers

10. Callipers
Task: Use a callipers or a vernier calipers to measure the outside and inside diameter of a beaker in mm

11. Mass

12. Measuring Mass with a Scales
Mass is the amount of matter in a substance.
Unit: Kilogram (kg).

13. Task: Calculate the mass of the liquid in a beaker in grams (g)

14. Temperature

15. To measure Temperatures.
Thermometer
Unit: Degrees Celsius (oC)
Task: Use Thermometer measure the temperature of a beaker of fresh tap water.

16. Area & Volume

17. Area is the amount of surface that covers an object.
52 mm
Area = Length x Breadth
A = L x B
36 mm
A = 52 mm x 36 mm
= 1,872 mm2
Task: Measure the length and breadth of your copy and calculate its area in mm2

18. Volume is the amount of space taken up by an object.
Volume = length x breadth x height.
Example to calculate the volume of a matchbox
V = L x B x H
36 mm
52 mm
V = 36mm x 52mm x 15mm
15 mm
V = 28,080 mm3
Task: Measure the dimensions of a block of wood
(or matchbox) and calculate its volume in mm3

19. To measure the volume of a liquid
Measuring Cylinder
Liquid Volume is measured in:
Litres (l) or Millilitres (ml)

20. Read from bottom of the Meniscus

21. To measure the volume of a small object
Finishing Volume
Starting Volume
The Increase in Volume is 25 ml
So this must be the Volume of the Stone

22. To measure the Volume of an Irregular Object using an Overflow-Can
Measuring Cylinder
Task: Use an overflow-can and measuring cylinder to work out the volume of a stone in ml