Transcript AIM: Measuring Length with the Metric System.

AIM: How is volume measured?
VOCABULARY
 Cubic centimeter (cm3)
 Milliliter (mL)
 Liter (L)
 Regular shaped objects
 Irregular shaped objects
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OBJECTIVE
To successfully measure volume
using the metric system for a
regularly shaped object.
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DEFINITION
What is volume ?
Volume is the amount of
space matter (a solid, a liquid
or a gas) takes up.
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In the United States…
How is liquid volume
measured ?
Cups, pints, quarts, ounces,
gallons.
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In the Metric System…
How is liquid volume measured ?
Liters = Base (standard) unit of
measure for volume
We see liters and milliliters on
items we buy at the grocery store
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Both liquids and solids take up
space, so both liquids and solids
have measurements of volume
FACT: 1 milliliter (mL) takes
up the same amount of space
as a cubic centimeter (cm3)
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Basic Terminology
1 liter = 1000 milliliters
1 L = 1000 ml
a milliliter is also called a
cubic centimeter (cm3)
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Our instrument for measuring regularly
shaped solids….
Meter
stick (or
a metric
ruler)
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How would you calculate the
volume of a cube?
Height
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Length
How would you calculate the
volume of a cube?
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Volume = L x W x H
So, if the Length is 2 cm and the
width is 2 cm and the height is 2
cm …
What is the Volume of this cube?
Volume = L x W x H
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2cm x 2cm x 2cm = 8 cm
3
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Volume = L x W x H
Suppose instead of cube, we use
a rectangular box …
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Volume = L x W x H
The Length is 4cm, the width is
2cm, the height is 3cm. What is
the volume ?
3 cm
2 cm
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4 cm
Volume = L x W x H
4cm x 2cm x 3cm = 24 cm
3 cm
2 cm
4 cm
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Volume = L x W x H
3
What do you think you call an
object whose L, W, and H are
easily measured?
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Regular Shaped Object
Regular Shaped Objects
are objects whose H, L, and W are
straight even lines and can be
accurately measured with a ruler.
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Irregular Shaped Objects
are objects that don’t have straight
even lines and can not be accurately
measured with a ruler.
But…more on that tomorrow…
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Calculate the volume of …
… an object who height is 5 cm,
whose length is 10 cm, and
whose width is 4 cm
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A cubic centimeter (cm3) is
the same as a milliliter (mL)
1 cm3 = 1 mL
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Now – lets practice on some real
objects !!!
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Volume = L x W x H
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