In physics, magnetism is a force that can attract (pull closer) or repel (push away) objects that have a magnetic material like iron inside them (magnetic objects). Magnetism is a property of certain substances which pull closer or repel other objects. Magnetism is caused by the motion of electric charges.
Day 1 – Introduction
- Student Work Packet – Topic 35
Day 2 – Virtual Textbook
- Read Physical 35 – What is Magnetism?
- Read Physical 35 – Earth’s Magnetic Field
- Read Physical 35 – Magnets and Electricity
- Write a letter 35 – Magnetism
2:00 Magnetism: Motors and Generators
4:49 DC Motor, How it works?
4:43 How to Make a Simple MOTOR out of SPINNER
Compare Contrast and Debate
Background: Absolute North and magnetic North are not exactly the same. Maps and other directions are typically communicated using absolute North. This means that using a compass requires correcting the measurement for the declination (or difference) between the reading on the compass compared to absolute North.
- Position A: Some people argue that maps should be created to align with magnetic North rather than absolute North so that no correction is required to use a compass.
- Position B: Others believe that the way maps are constructed – to align with absolute North – are appropriate, and that correcting for the declination of magnetic North is not that difficult to do.
Standard Daily Material
- Day 1 – Standard material – introduction day
- Day 2 – Standard material – reading day
- Day 3 – Standard material – make a presentation
- Day 4 – Standard material – give a presentation
- Extra! – Enrichment and remediation options
Other Topic Specific Resources
- Science & Engineering Practice: Develop and use models.
- Cross-Cutting Concept: Cause and Effect: Mechanisms and explanations.