Page 533 - SUBSEC October 2017_Neat

UNIT 1
MODULE 3: THERMAL AND MECHANICAL PROPERTIES OF MATTER (cont’d)

SPECIFIC OBJECTIVES EXPLANATORY NOTES SUGGESTED PRACTICAL
ACTIVITIES

Thermal Properties (cont’d)

Students should be able to:

2.9. solve numerical
problems using the
equations
E = mcΔθ and E = mL .
H H

3. Heat Transfer

Students should be able to:

3.1. describe the mechanism Discussion on why solids are
of thermal conduction; generally better conductors
of heat than liquids and
gases.

3.2. use the equation Restrict use to cases of one- Use a thermocouple to
∆ dimensional heat flow. measure the temperature
( = − )
∆ Temperature gradient = difference across a lagged
to solve problems in one- ∆
dimensional heat flow; − ∆ bar.

3.3. solve numerical Use of concept of
problems involving equivalent conductor.
composite conductors;

3.4. discuss the principles Discussion on both Searle’s Use Searle’s apparatus.
involved in the bar and Lee’s disc.
determination of thermal
conductivity of good and
bad conductors;

3.5. explain the process of Use this concept to explain
convection as a ocean currents and winds.
consequence of a change of
density;

3.6. discuss thermal
radiation;

CXC A16/U2/17 33