1. AIM: How is volume measured?
VOCABULARY
Cubic centimeter (cm3)
Milliliter (mL)
Liter (L)
Regular shaped objects
Irregular shaped objects
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2. OBJECTIVE
To successfully measure volume using the metric system for a regularly shaped object.
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3. DEFINITION What is volume ?
Volume is the amount of space matter (a solid, a liquid or a gas) takes up.
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4. In the United States… How is liquid volume measured ?
Cups, pints, quarts, ounces, gallons.
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5. 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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6. 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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7. a milliliter is also called a cubic centimeter (cm3)
Basic Terminology
1 liter = 1000 milliliters
1 L = 1000 ml
a milliliter is also called a cubic centimeter (cm3)
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8. Our instrument for measuring regularly shaped solids….
Meter stick (or a metric ruler)
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9. How would you calculate the volume of a cube?
Height
Width
Length
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10. How would you calculate the volume of a cube?
Volume = L x W x H
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11. What is the Volume of this cube?
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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12. 2cm x 2cm x 2cm = 8 cm 3
Volume = L x W x H
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13. Suppose instead of cube, we use a rectangular box …
Volume = L x W x H
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14. The Length is 4cm, the width is 2cm, the height is 3cm
The Length is 4cm, the width is 2cm, the height is 3cm. What is the volume ?
3 cm
2 cm
4 cm
Volume = L x W x H
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15. 4cm x 2cm x 3cm = 24 cm 3
3 cm
2 cm
4 cm
Volume = L x W x H
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16. What do you think you call an object whose L, W, and H are easily measured?
Regular Shaped Object
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17. Regular Shaped Objects3
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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18. Irregular Shaped Objects3
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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19. Calculate the volume of …3
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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20. A cubic centimeter (cm3) is the same as a milliliter (mL)
1 cm3 = 1 mL
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21. Now – lets practice on some real objects !!!3
Now – lets practice on some real objects !!!
Volume = L x W x H
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22. Class
Work
Calculate
the volume
of some real objects !
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