Page 511 - SUBSEC October 2017_Neat

UNIT 1
MODULE 1: MECHANICS (cont’d)

SPECIFIC OBJECTIVES EXPLANATORY NOTES SUGGESTED PRACTICAL
ACTIVITIES

2. Physical Quantities (cont’d)

Students should be able to:

1.4. measure physical A practical approach should
quantities using be used, for example, using a
appropriate instruments; Vernier caliper, screw gauge,
multi-meter.

1.5. construct calibration A practical approach can be Calibrate a spring to
curves; used. Non-linear curves may measure mass or a bottle to
be included. Calibration is measure volume. Use a
an operation that, under dropper pipette to get the
specific conditions, in a first exact volume. Estimate the
step, establishes a relation volume of an instrument
between the quantity values given a portion of a linear
with measurement scale.
uncertainties provided by
measurement standards and
corresponding indications
with associated
measurement uncertainties.

1.6. use calibration curves; Use calibration curves to Use calibration curves to
establish a relation for determine the volume of
obtaining a measurement water in a container of
result from a reading given different orientations.
by a meter or a gauge. For
example, determine the
temperature indicated by a
thermistor from a calibration
curve of temperature versus
resistance.

1.7. rearrange relationships Include logarithmic plots to
between physical test exponential and power
quantities so that linear law variations.
graphs may be plotted;

CXC A16/U2/17 11