Page 129 - SK Year 6 Science DLP

SPEED
SPEED
KELAJUAN
4 5 6
centre
of circle

Place the protractor at the centre Draw a straight line to Use a pen and label numbers
of the 14 cm-diameter circle. connect the centre of the 0 to 25.
Starting with angle 0 , mark a circle to all the points.
o
o
point for each angle of 10 until
o
250 .
7 8 9

Repeat steps 4 to 5 with the Label the numbers 0 to 90. Align the scales at number
18 cm-diameter circle. This 0 and glue the two circles at
time, starting with angle 0 , both centres.
o
mark a point for each angle of
o
27.7 until 250 .
o
10 11 12

centre of
circle

Write the unit for speed Cut the end of a straw to the Fix the needle to the centre
on each circle of the shape as shown in the picture. of the speedometer as
speedometer. Divide the Stick the needle at the end of shown in the picture above.
scale into 5 equal parts. the straw. Make a hole to fit
the straw at the centre of
the circle.
13 Use the speedometer that you have made to
indicate speed using different units.

Using your speedometer, what is the speed
of 45 km/h in m/s?

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