Bellringer For our bellringer, we are going to review the practice worksheet from yesterday. Please have this on your desk.

Review We have began our study of measurement with length What unit do we use to measure length? What are some things we measure the length of in everyday life? How do we measure length?

Learning Target meter sticks, I understand the purpose for using tools of measurement. This means I know what timers, meter sticks, balances, and spring scales are used for. I can choose appropriate tools for measurement. This means I can choose the best tool to make a certain measurement.

Measuring Volume Measuring Volume Wednesday, August 10 th Study Pack #2

Make your foldable! Volume of a Regular Shape Volume of a Liquid Volume of an Irregular Shape 2

Volume Volume: the amount of space an object takes up

Volume Regular shapes –Use a ruler to measure each dimension (length, width, and height) –It doesn’t matter which is which! –Find volume using the correct formula V = l x w x hV = l x w x h –Units: cubic centimeter (cm 3 )

Try It! Find the volume of a box is 10cm long, 15cm wide, and 20cm deep. –Answer: 3000 cubic centimeters

Volume of a Liquid Use a graduated cylinder Units: Milliliter (mL)

Volume of a Liquid Read the volume at the bottom of the meniscus –The meniscus is the curved surface of the water –Always read it at eye level

Volume of a Liquid Tips –Know what the unnumbered marks represent –Estimate if you are between 2 marks

Volume of Irregular Objects For example: a rock! When objects do not take on a regular shape or it is difficult to measure their dimensions we use a different method to find their volume, this method is called water displacement Use the method of water displacement

Volume of Irregular Objects Displacement is –The amount of water an object replaces –Equal to the object’s volume

Volume of Irregular Objects Steps –1.) Fill a graduated cylinder with a certain amount of water Not too much! But, it must be enough to cover the object you are going to measure! –2.) Record the volume of the water in your data (starting volume)

Volume of Irregular Objects 3.) Carefully place the object in the graduated cylinder –Be sure not to splash out any data or this will affect your results! 4.) Record the new volume in your data table (ending volume)

Volume of Irregular Objects –5.) Subtract the starting volume from the ending volume This is the volume of your object! ORYou can write the volume in milliliters OR you can write it in cubic centimeters 1 milliliter = 1 cubic centimeter

Volume of Irregular Objects

Review How do we calculate the volume of a regular object like a box? What tool do we use to measure the volume of a liquid? What method do we use to measure the volume of an irregular object like a piece of oddly shaped metal?