Capacity & Volume

Capacity & Volume

Cubic Centimetres = Millilitres

• The volume of an object can be measured in cubic centimetres or millilitres (they are equal)

The Water Displacement Method

• Here is another way to find the volume of an object

• You can use displacement of water to find the volume of a solid object

• The video on the right explains why it works:

Steps for Water Displacement Method

• Mark the water level in a container

• Totally submerge the object

• Mark the new water level

• In the example on the right, the rock has a volume of 30 mL, or 30 cubic centimetres (cm3)

Open Ended

What is the water displacement method?

Open Ended

Who invented the water displacement method?

Open Ended

Why do we sometimes need to use the water displacement method?

Multiple Choice

How could you find the volume of a crown?

• L x W x H

• Water Displacement Method

Multiple Choice

How could you find the volume of this rectangular prism?

• L x W x H

• Water Displacement Method

Multiple Choice

How could you find the volume of a rock?

• L x W x H

• Water Displacement Method

Multiple Choice

How could you find the volume of this rectangular prism?

• L x W x H

• Water Displacement Method

Poll

Are you going to show your parents the "Archimedes Principle" in action today? (show them the water displacement method)

• Yes!

• Maybe

• No :(