Substrand: "4.3 Heat" (20 periods)

Heat is a form of energy. It can be transferred through the air and through liquids. Objects can gain or lose heat energy. When objects are heated they gain heat energy. They lose heat energy when cooled. When an object gains or loses heat energy, it’s temperature changes. Temperature is the measure of how hot or how cold an object is. Heating and cooling are important processes that bring about physical changes of state in substances, e.g. cooling liquid water can result in solid water (ice).

Learner's should:

Learner's should:

Learner's should:

4.3.1 know that heating and cooling are to do with gain or loss of heat (k)

4.3.1.1 describe the effects of heating and cooling in solids, liquids and gases

4.3.2 understand that changes occur when substances are heated or cooled (u)

4.3.2.1 explain how change in an object is related to object expansion and contraction due to heat gain and heat loss

4.3.3 recognize that temperature is a measure of how hot or cold an object is (k)

4.3.3.1 read and record temperature of an object in degrees unit

4.3.4 relate the change in temperature of an object to the gain and loss of heat (k)

4.3.4.1 explain the change in temperature in terms of heat gain and heat loss

4.3.5 know that a thermometer is an instrument for measuring the degree of hotness or coldness (k)

4.3.5.1 record temperature from a thermometer

4.3.6 understand that some solid substances allow heat energy to travel through them (Conductors); others do not (Insulators) (u)

4.3.6.1 list two examples of conductors and insulators
4.3.6.2 explain why conductors allow heat to travel through and insulators do not allow heat

4.3.7 understand that heat energy is transferred in liquids by convection (u)

4.3.7.1 identify two examples of heat loss and heat gain in daily life

4.3.8 appreciate that energy from a heat source is transferred through air by radiation (v)

4.3.8.1 differentiate the process of heat transfer in liquids and air