AIM: How is the volume of irregularly shaped objects measured? VOCABULARY Water displacement method Irregularly shaped object 11/13/2018

To successfully measure volume of irregularly shaped object. OBJECTIVE To successfully measure volume of irregularly shaped object. 11/13/2018

Volume is the amount of space an object takes up. DEFINITION What is volume ? Volume is the amount of space an object takes up. 11/13/2018

What is a regularly shaped object? In the Metric System What is a regularly shaped object? …an object whose length, width, and height can be accurately measured with a ruler ! 11/13/2018

In the Metric System When we calculate the volume of a regularly shaped object, what unit do we use? m3 or cm3 11/13/2018

What is an irregularly shaped object? In the Metric System What is an irregularly shaped object? …an object whose length, width, and height cannot be measured with a ruler ! 11/13/2018

For liquids, the standard unit of measure for volume is … In the Metric System For liquids, the standard unit of measure for volume is … liter 11/13/2018

What is this called? A rock 11/13/2018

How can you measure its volume Can you measure its height, width, and length? 11/13/2018

So how do you measure its volume Water displacement method Need a graduated cylinder 11/13/2018

Water Displacement Method Using your graduated cylinder Step 1: measure the volume of water 11/13/2018

Water Displacement Method What is the volume of the water? 7 ml 11/13/2018

Water Displacement Method Step 2: insert the rock in the water Re-measure the water in the cylinder! 11/13/2018

Water Displacement Method What is volume now? 9 ml 11/13/2018

Water Displacement Method Step 3: Subtract the first measurement from the second. 11/13/2018

Water Displacement Method The difference in the measurements is the volume of the rock in ml 11/13/2018

Water Displacement Method Even though we used liquid to measure the volume of the rock cm3 3 11/13/2018

How do you measure the volume of an irregularly shaped object? 3 How do you measure the volume of an irregularly shaped object? With a graduated cylinder Using the water displacement method 11/13/2018

3 Is the water displacement method an example of a direct or an indirect measurement? Indirect !! 11/13/2018

Give an example of an irregularly shaped object? 3 Give an example of an irregularly shaped object? A rock A screw A penny A marble 11/13/2018

Class Work Calculate the volume 11/13/2018

Home Work Internet Questions Work Sheet 11/13/2018

Lets Practice reading a graduated cylinder: What is the volume here? What is the increment? 11/13/2018

Lets Practice reading a graduated cylinder: What is the volume here? What’s the increment? 11/13/2018

Lets Practice reading a graduated cylinder: What is the volume here? 11/13/2018

a milliliter is the SAME SIZE as a cubic centimeter Basic Terminology 1 liter = 1000 milliliters 1 l = 1000 ml a milliliter is the SAME SIZE as a cubic centimeter or “cc” for short 11/13/2018