Page 13 - Science Class 6 Times Publication

Activity 1.3

Divide the class into the groups of four or ve students each and
order them to measure the following things accurately. Compare the
work of one group with that of other.
S.N. Things Length Breadth Height or Thickness
1. Science book
2. Science note book
3. Desk or bench
4. Classroom

Measuring the external diameter of spherical objects
Place a spherical object over a plane surface. Take two wooden blocks
with smooth edges. Then place the spherical object between the
wooden blocks so that the object is just touched by both the blocks.

Now, measure the distance between the wooden blocks. This distance
gives the external diameter of the spherical object.

0 cm 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 2 3 4 5 6

Measurement of volume

We use different liquids such as water, milk, petrol, diesel, kerosene,
alcohol, etc. The amount or quantity of these liquids is regarded as
their volume. When a liquid is placed in a vessel, it occupies some
space. The space occupied by a matter is called volume. The volume
of liquid is measured in the unit of litre (l). A little quantity of volume
is measured in the unit millilitre (ml).

1 litre = 1000 millilitres (ml)

3
The volume of the regular solids is measured in the unit cubic metre (m ).

Times' Crucial Science and Environment 9 Book 6