Measurement of Length - Science Class 4

In this video, you will learn all about Measurement of Length.
In early times, people used to measure length using their hands and feet. This method of measurement does not give accurate results. The handspan, cubit and footspan are some non-standard units for estimating length. They differ from person to person.

Standard units are required to measure qualities accurately. Metre (m) is the standard unit used to measure length. For a smaller length, we use centimetre (cm) and for even smaller lengths, we use millimetre (mm). One metre consists of 100 centimetres.

Larger distances or lengths are measured in kilometre (km). We use scales and inch tapes to measure lengths.

The units are related to one another as follows:
1 centimetre (cm) = 10 millimetres (mm)
1 metre (m) = 100 centimetres (cm)
1 kilometre (km) = 1000 metres (m)

My Science Zone Class 4 @Blueprint Digital