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3. 2 Measurement of Volume Volume is the amount of space an object takes up.

4. 3 Volume Tools Regular Shaped Objects (an object that is a quadrilateral) Ruler Tape measure Meter stick Irregular Shaped Objects Graduated Cylinder Beaker Flask

5. 4 Volume of a Regular Shaped Object Volume = Length x Width x Height V= LxWxH To find the volume of a regular shaped object (an object that is a square or rectangle), place a ruler on all three sides of the square and measure:

6. Length = Long (side to side) Width = Thick (wide) Height = Tall (up & down) Width Height Length

7. 6 UNITS!!! The measure of a regularly shaped object will typically be in the following units: m 3 cm 3 mm 3

8. 7 Practice # 1 Volume = Length x Width x Height Volume = 20 m x 2 m x 2 m= = 80 m 3

9. 8 Practice # 2 Volume = 10 m x 4 m x 5 m Volume = Length x Width x Height = 200 m 3

10. 9 Volume of an Irregular Shaped Object To find the volume of an irregularly shaped object (an object where the sides are not all flat), use a beaker or a graduated cylinder.

11. 10 How to Measure the Volume of an Irregular Shaped Solid Fill the graduated cylinder with enough water to cover object. Record the volume Carefully place the object into the water filled graduated cylinder. Record the new water level. The volume of the object is the Final Volume – Initial Volume

12. 11 UNITS!!! The measure of a irregularly shaped object will typically be in the following units: mL Liters

13. 12 Tips to Reading a Graduated Cylinder 1.Find the two nearest numbers on a G.C 2. Subtract them 3.Then divide by the number of spaces (not lines!)

14. 13 Meniscus reading When you pour water into a measuring cylinder and place it on the bench or any flat surface, you will observe that the water surface is curved. The meniscus of most liquids curves downwards. The correct way to read the meniscus is to position the eye at the same level as the meniscus.

15. 14 The mark corresponding to the bottom of the meniscus is taken as the reading. What does this Meniscus read? This should read 8.6 mL

16. 15 When taking readings from the measuring cylinder, the bottom of the water meniscus was read horizontally at the eye level to avoid parallax error.

17. 16 Volume of a liquid FormulaRead the volume level from the bottom of the meniscus

18. 17 Measuring the volume of a large irregular- shaped object 1.Fill the displacement can with water until excess water flows out of its spout into a beaker. Remove the beaker when water stops flowing into it.

19. 18 2.Place an empty measuring cylinder below the spout of the displacement can. Tie the irregular-shaped object with a piece of string. Lower it gently into the can until it is completely immersed in the water.

20. 19 3.When the water stops flowing into the measuring cylinder, observe and record the volume of water displaced by the object and collected in the measuring cylinder. The volume of the water in the measuring cylinder is equal to the volume of the irregular-shaped object.

21. 20 THE END