Length and Solid Volume

1
Length and Solid Volume

• The metric system at use!!!

2
First, We Need To Know Length!!
Length the unit of measure to determine the
distance of an object
Use A Ruler or A Meter Stick
3
What Are Those Markings??
Millimeters
Centimeters
4
How Can We Change From Centimeters to
Millimeters, etc. ?
If you move left down the stairs, move the
decimal point left as many steps as you moved
Meter
Milli-
Centi-
Gram
Liter
If you move right up the stairs, move the decimal
point right as many steps as you moved
X
Kilo-
5
You Try!!!
45.0 m ___________ mm
45000 mm
85.0 mL ___________ L
.085 L
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Time For Solid Volume!!
2 Ways to Calculate
V L x H x W
Water Displacement
7
Water Displacement

• 3 Steps

• Take an original volume of the
• water in the graduated cylinder

2. Place the object in the water
3. Observe the new volume and subtract the
original volume from the new volume
8
You Try!!!
Initial
Final
Final Volume 48.0 mL
- Initial Volume 43.0 mL
Volume of Object 5.0 mL
9
Use The Equation!!
If the object has straight edges and can be
measured with a meter stick, use the following
equation
Length
Width
Height
Units
cm3
V L x H x W
10
You Try!!
Length 3.0 cm
Height 3.0 cm
Width 3.0 cm
3.0 cm
X
3.0 cm
Volume 27.0 cm3
3.0 cm