Energy · JHS3 Science

Lesson notes

Indicator: B9.4.1.2.4 - Demonstrate the formation of an eclipse.

By the end of the lesson, learners can:

Define solar eclipse and lunar eclipse in their own words, correctly identifying which celestial body is obscured in each case.
Build a working model using everyday materials to demonstrate how a solar eclipse forms when the Moon comes between the Sun and the Earth.
Use the same model to show how a lunar eclipse forms when the Earth comes between the Sun and the Moon.
Explain, using their model, why an eclipse does not happen every month even though the Moon orbits the Earth monthly.
State the safety rule that the Sun must never be viewed directly during a solar eclipse, and explain why it is dangerous to do so.

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Strand: Forces and Energy (Strand 4)
Sub-strand: Energy (4.1)
Content standard: B9.4.1.2 - Demonstrate understanding in and the capability to do calculations involving energy.
Indicator: B9.4.1.2.4 - Demonstrate the formation of an eclipse.
Suggested placement: Term 2, Week 8 (Week 20 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.
Source document note: The official curriculum document has a fault in this entry, so the curriculum text above is transcribed exactly as printed:

core competencies - p.108: this subskill is printed with its competency abbreviation but no number, unlike every other subskill in the document
Curriculum reference: Science, Common Core Programme (JHS1-JHS3), 2023, p. 108
Transcribed from the official NaCCA publication. Check this page against the source.

1. Use a model to illustrate how an eclipse is formed,