Page 6 - Science Class 6 Times Publication

For example, time, length, mass, temperature, etc are physical
quantities. But the feelings such as anger, love, affection, happiness,
sadness, etc cannot be measured. Such quantities are called
non-physical quantities.

Activity 1.1

Bring a metre tape, scale, watch or clock, thermometer, beam balance,
etc to your class and measure different quantities such as length and
breadth of your science book, time taken by your friend to count all
pages of your science book, temperature of your body, mass of a
brick, etc.

l
a
l
a
Measuring tape Beam balance Wall clock
Beam balance
b
In the above activities, we compare the unknown amount or
quantity with a known quantity. This process of comparison is called
measurement. Thus, the process of comparing an unknown physical
quantity with known standard quantity is called measurement.
Importance of measurement

Measurement is essential in our daily life. In fact, almost all of our
daily activities involve measurement directly or indirectly. The
importance of measurement can be summarized as follows:

1. We need measurement while buying, selling or exchanging
the goods.
2. We need measurement of time while working.

3. We need measurement while preparing our meals.

4. We need measurement while sewing the clothes.

Times' Crucial Science and Environment 2 Book 6