1. Measuring Volume

2. What is Volume?
Volume is defined as the amount of space something takes up.
SI units for volume is the liter (L)
Other units to use are milliliter (mL) and cubic centimeters (cm3).
1000 mL = 1 L
1 mL = 1 cm3

3. Ways to Find Volume 3 Ways to Find Volume Liquids
Irregular Shaped Objects
Regular Shaped Objects

4. Finding Volume of Liquids
Graduated Cylinders are often used to find the volume of liquids.
Graduated Cylinders are long and cylindrical making it easy to find volume.
A curve is created by the liquid when in a graduated cylinder known as a meniscus.

6. Finding Volume of Liquids
4 Steps to reading a graduated cylinder.
Place it on a flat surface.
Read at eye level.
Read at the bottom of the meniscus.
Identify the units on the graduated cylinder.

7. Volume of Liquids Reading a Meniscus

9. Measuring Volume by Water Displacement
Used for irregular shaped objects
Select a graduated cylinder large enough to put the object in
Add enough water to completely cover the object.
Record the volume.

10. Adding Object SLOWLY add the object to be measured
Read the new level of the water
The water will rise an amount equal to the volume of the object

11. What not to do

12. Here’s what the cylinder should look like

13. Do the math
Final volume of water – original volume of water = volume of object
22.5 mL mL =  5.1 mL
Therefore, the volume of the object by displacement is 5.1 mL

14. Volume of Regular Shaped Objects
Rectangular Prisms
Triangular Prisms
Spheres
Cylinders
Use the correct equation to solve.
We will only be using rectangular prisms
V = L x W x H

15. Examples