and so can the length of a bridge

 or a waterfall.

Smaller Measurements 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 Measurements 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

LARGER MEASUREMENT FROM A meter

1 kilometer
(1 km)

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