SHS3 Physics · Semester 1 Week 14: Heat

Lesson notes

Learning Objectives

Indicator: 3.2.1.LI.3 - Group metals in increasing order of expansion property using their linear expansivities.

By the end of the lesson, learners can:

Recall the definition of linear expansivity and state its unit (per kelvin, K⁻¹).
Identify at least five common metals and state their linear expansivity values from a given data table.
Arrange a set of metals in increasing order of expansion based on their linear expansivity values.
Justify the ranking of metals in a group discussion by comparing their expansivity values accurately.
Predict which metal in a pair would expand more when heated to the same temperature change, using linear expansivity data.

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Curriculum details

Strand: Energy (Strand 2)
Sub-strand: Heat (2.1)
Content standard: 3.2.1.CS.1 - Demonstrate knowledge and understanding of heat as agent of expansion of states of matter. 3.2.1.LO.1 Explain how expansion occurs in solids, liquids and gases.
Indicator: 3.2.1.LI.3 - Group metals in increasing order of expansion property using their linear expansivities.
Suggested placement: Semester 1, Week 14 (Week 14 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: NaCCA curriculum document, p. 164

Exemplars (from the NaCCA curriculum)

Think pair share: Learners use data on linear expansivity of various metals and group them according to their increasing order of expansion.
Foster collaborations that broaden students' exposure to diverse physics-related career paths and role models.
Assessment (3.2.1.AS.3). The document marks these depth-of-knowledge levels for this indicator: Level 1 Recall; Level 3 Strategic reasoning.
Teaching and Learning Resources:
- Audio-visuals
- Internet
- Projectors
- YouTube
- Interactive virtual laboratory