Page 128 - SK Year 6 Science DLP

The units for speed are centimetre per second (cm/s), metre per second (m/s),
and kilometre per hour (km/h). Look at the pictures below. What are the units of
speed used?

Tortoises are one of the slowest animals
in the world. A tortoise can travel
7.6 centimetres in 1 second. What is the
unit of its speed?

The fastest man in the world can run the
100-metre race in 9.58 seconds. What is
the suitable unit of speed to use?

F1 cars can race with a speed of
360 kilometres in 1 hour. What is the unit
of speed used?

Let’s
Let’s
Test Speedometer with Different Units
Test

Aim To design a speedometer or speed meter with different units.

Apparatus and Scissors, compass, protractor, ruler, pen, pencil, glue, manila card
Materials (3 different colours), straw, and adhesive tape

Steps
1 Conduct this activity individually. 9 cm
Draw and cut out two circles with
2 14 cm
diameters of 14 cm and 18 cm
respectively, on two manila cards. 18 cm
3 Draw and cut out the third manila card
into a 9 cm shaped needle as shown.

#TIPS
centre of The standard unit for measuring
The centre of a circle a circle speed in the metric system
can be determined by is metre per second and is
fold CLICK
folding the circle. marks normally written as m/s.

#TEACHER
120 7.1.2 The information above is obtained from
www.infoplease.com, www.sciencekids.co.nz, and Wikipedia.