kilometer

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• EVERYDAY METRIC UNITS

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• Base Unit - meter (m)

• centimeter (cm)

• millimeter (mm)

• kilometer (km)

• Derived Unit - liter (L)

• milliliter (mL)

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VIDEO CLIP
DID YOU KNOW?
that you can divide 1 meter
by exactly 10 equal parts
(10 cm x 10 cm x 10 cm)...

then make a cube (1 000 cm³)
of it to fill with water
and you will find that it
contains exactly 1 L (1 liter)
(1 000 mL) of water
and is the mass of exactly
1 kg (1 kilogram) (1000 g).
ALL SIMPLY RELATED IN 10!

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The International System of Units is called "SI"
and is the Metric Measurement used in America.
kilometer (km)
also spelled kilometre
kilo is the Prefix meaning 1 000 times as much

There are exactly 1 000 m (meters)
in 1 km (1 kilometer)
which is pronounced
"KILL-oh-meet-ur" NOT "kill-AH-mit-ur"

Use the symbol km

Longer Distances are Measured in kilometers
A trip across North America is approximately
7 600 kilometers long.

Measurements used for Mars Exploration are Measured
Exclusively in Metric Dimensions for Accuracy.

1 kilometer
(1 km)

Remember, kilo is the prefix meaning
1 000 times as much.
So, one thousand meters
(1000 m) is the length of
1 kilometer and it is simply
written 1 km

Longer distances like lakes
and rivers are measured
in kilometers

Going to work or holiday
distance is measured
in kilometers

A jog around the park can be measured in kilometers

Roads are measured
in kilometers

1 kilometer is about the
length of 60 train cars

A car traveling at
90 km/h
is moving at
90 kilometers
per hour

THAT'S EASY!

ROAD SIGN DRIVING TIP:
For example,
when you see a sign
that is shown as 90 km/h
(90 kilometers per hour)
and you want a quick conversion
to mph (miles per hour)
simply multiply 6 x 90
in your head and you
are going approximately
54 miles per hour.
•
And that's close enough for
everyday purposes.

1 kilometer per hour (km/h) is equal to .6214 miles per hour

Smaller from a kilometer

1 meter (1 m)	Remember, kilo is the prefix meaning 1 000 times as much. So, one thousand meters (1 000 m) being the length of 1 kilometer, is simply written 1 km which is pronounced "KILL-oh-meet-ur" NOT "kill-AH-mit-ur"
Smaller Measurement from a meter
1 centimeter (1 cm)	Remember, centi is the prefix meaning 1 one hundredth of the base unit meter. So, 1 one hundredth of a meter (0.01 m) is simply written 1 cm
Smaller Measurement from a centimeter
1 millimeter (1 mm)	Remember, milli is the prefix meaning 1 one thousandth (0.001). So 1 one thousandth of the base unit meter being 1 millimeter is simply written 1 mm

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kilometer (km)
Video
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"The
Metric
System"

•

SMALLER METRIC
MEASURES

1 cm³ (1 cubic centimeter)

filled with water contains exactly
1 mL (1 milliliter)

and is the mass of exactly
1 g (1 gram)

•

VIDEO CLIP

"centimeters
milliliters
milligrams"

1 meter (1 m)

1 meter
(1 m)