SHS1 Physics · Semester 2 Week 10: Magnetostatics

Lesson notes

Learning Objectives

Indicator: 1.3.2.LI.3 - Describe the processes involved in magnetization and demagnetization.

By the end of the lesson, learners can:

Describe the single touch, double touch, and electrical (solenoid) methods of magnetization, stating the steps involved in each process.
Explain the three main methods of demagnetization: heating, hammering, and using an alternating current (AC) in a solenoid.
Demonstrate the electrical method of magnetization by setting up a solenoid around an iron nail connected to a DC source and recording observations.
Distinguish between temporary and permanent magnets, giving examples of each and their practical uses.
Describe at least two everyday applications of electromagnets, such as the electric bell and lifting cargo at the harbour.

Sign in with your phone number to read the full note and download the GES plan - free.

Sign in with phone number

Curriculum details

Strand: Electric Field, Magnetic Field and Electronics (Strand 3)
Sub-strand: Magnetostatics (3.2)
Content standard: 1.3.2.CS.1 - Demonstrate knowledge and understanding of the basics of magnets, magnetization and demagnetization and magnetic field. 1.3.2.LO.1 Use knowledge gained to distinguish between magnetic and non-magnetic materials and explain magnetization and demagnetization.
Indicator: 1.3.2.LI.3 - Describe the processes involved in magnetization and demagnetization.
Suggested placement: Semester 2, Week 10 (Week 30 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:

content standard text - p.66: the document prints this content standard code as 1.3.2.CS.2.1
indicator text - p.66: the document prints this learning indicator code as 1.3.2.LI.1.3
exemplars - p.66: the document prints this assessment code as 1.3.2.AS.1.3
Curriculum reference: NaCCA curriculum document, p. 66

Exemplars (from the NaCCA curriculum)

Experiential Learning:
- Describe how materials are magnetised. Learners should make a solenoid round a nail and connect to a dc source and record their observations as you bring magnetic materials close to the nail in the solenoid.
- Describe applications of electromagnets i.e., electric bell, lifting cargo form the harbour.
Provide equitable access to resources and opportunities.
Assessment (1.3.2.AS.3). The document marks these depth-of-knowledge levels for this indicator: Level 1 Recall; Level 2 Skills of conceptual understanding.
Teaching and Learning Resources:
- Magnetic
- Audio-visuals and non-magnetic materials
- Interactive
- Magnets simulations
- Iron filings
- Flash cards