JHS1 Science · Term 2 Week 12: Conversion and Conservation of Energy

Lesson notes

Learning Objectives

Indicator: B7.4.3.1.1

By the end of the lesson, learners can:

State the law of conservation of energy in their own words.
Explain what energy conversion means using at least one everyday example.
Draw a simple diagram showing a closed system where chemical energy in a dry cell changes into electrical, heat and light energy, with all output energies shown.
Use the dry cell example to demonstrate that the total energy in a closed system remains the same before and after conversion.
Give one real-life example of energy conversion in their community and identify the energy forms involved.

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Curriculum details

Strand: Forces and Energy (Strand 4)
Sub-strand: Conversion and Conservation of Energy (4.3)
Content standard: B7.4.3.1 - Demonstrate an understanding of the principle of conservation and conversion of energy and their application in real life situations
Indicator: B7.4.3.1.1 - Explain the principle underlying conservation and conversion of energy.
Suggested placement: Term 2, Week 12 (Week 24 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: Science, Common Core Programme (JHS1-JHS3), 2023, p. 33
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

1. Explain the law of conservation of energy by using diagram to show that in a closed system the value of chemical energy, for example in dry cell which changes into electrical, heat and light energy will remain the same.
2. Use exemplar 1 to explain energy conversion and its application to life.