Volume of a Liquid – (ml or L) measure with a graduated cylinder, beaker, or flask
- when reading a graduated cylinder you always need to measure to the bottom of the meniscus as shown below
Volume of a Solid (as seen above, left) – (cm3) equation for volume= l x w x h
- cm3 derived from (cm x cm x cm) Exponents are added together to give 3
- Example (as seen above, right): L = 4 cm, W = 2 cm, H = 3 cm
o Volume = 24 cm3
Volumes of an Irregularly Shaped Object – (cm3) volume of solids need to be expressed in units of distance such as cm, m, km, etc.
-Use this method when you are unable to measure an object with the above method.
- Example of this would be if you want to find the volume of a bolt, pencil, keys, etc.
- Start with a graduated cylinder (large enough to fit the object being measured) fill with enough water to cover the object. Read the graduated cylinder and write down how much liquid volume you have before the object is added. Add the object to the graduated cylinder and read the new liquid volume.
- This method is called VOLUME DISPLACEMENT. This is because the object displaces the water.
- Example: (Liquid Volume After, with object, - 33 ml) --- (Liquid Volume Before, without object, - 23 ml) = 10ml
Because 1ml = 1cm3, you can say that the volume of the irregular object has a volume of 10cm3
- when reading a graduated cylinder you always need to measure to the bottom of the meniscus as shown below
Volume of a Solid (as seen above, left) – (cm3) equation for volume= l x w x h
- cm3 derived from (cm x cm x cm) Exponents are added together to give 3
- Example (as seen above, right): L = 4 cm, W = 2 cm, H = 3 cm
o Volume = 24 cm3
Volumes of an Irregularly Shaped Object – (cm3) volume of solids need to be expressed in units of distance such as cm, m, km, etc.
-Use this method when you are unable to measure an object with the above method.
- Example of this would be if you want to find the volume of a bolt, pencil, keys, etc.
- Start with a graduated cylinder (large enough to fit the object being measured) fill with enough water to cover the object. Read the graduated cylinder and write down how much liquid volume you have before the object is added. Add the object to the graduated cylinder and read the new liquid volume.
- This method is called VOLUME DISPLACEMENT. This is because the object displaces the water.
- Example: (Liquid Volume After, with object, - 33 ml) --- (Liquid Volume Before, without object, - 23 ml) = 10ml
Because 1ml = 1cm3, you can say that the volume of the irregular object has a volume of 10cm3
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