More Free Powerpoints at Http://Www.worldofteaching.com
20 magnetism
MAGNETIC MATERIALS
Magnetism3
Magnetism
Magnetism - For kids
Magnets have been known for centuries. The Chinese and Greeks knew about the “magical” properties of magnets. The ancient Greeks used a stone substance.
Do Now (1/23/14): Do not touch the materials on your desk until instructed! 1.What is a magnet? 2.What are some properties of magnets? 3.How do you use.
Magnetism Magnets magnetism – force of attraction or repulsion not all objects are affected by the force of magnetism ex. wood, glass, paper, plastic.
Top Ten List 1. There are North Poles and South Poles. 2. Like poles repel, unlike poles attract. 3. Magnetic forces attract only magnetic materials.
Forces: F net causes acceleration. Forces – act at distance F g – attractive btw masses. F e – attractive/repulsive between objects w net charge. F mag.
