Book+2+Lesson+1

1.1 Book 2 Chp 1. magnetism 1. what is magnetism? A. Magnet-any materials that contracts iron and materials that contain iron. 1. discovered in ancient greece over 2000 years ago. city of magnesia iii. rock containing a mineral call magnetite 2. Magnetism- attraction or repulsion of magnetic materials. 3. one part is always going to point north when swings freely. i. points to north star- polaris ii. AKA- leading star or lodestone iii. Magnetic rocks called lodestones.

B. magnetis poles 1. magnets have 2 rnds called magnetic pole. i. strongest at the poles ii. North pole points north iii. south pole points othe end 2. unlike poles attract like poles repel 3. magnetis force the attraction or repulsion between magnetic poles. i. produced when magnetic poles interact. c. magnetisc fields 1. area of magnetic force around a magnet 3.magnets can interact without even touching 2. not limited to the poles. 3. magnetic field lines- invisible lines that map out a magnetyic field around a magnet. i.spreadout from 1 pole curve around the magnet and return to the other ii.. from complete loops from pole to pole iii. arrows to show direction. a.) Nort to South iv. closer lines= stronger field.  5. combined field- when magnetic field of 2 or overlap  6. bar magnet and horse shoe magnet

Study guide 2.at either pole 3.never cross 10.magnet 11. magnetic 12. magnetic field. 16. false- magnetic fields 21. pole a is nort- opposite end to south pole. pole b is south becuasw attracted to A. so has to be south 22. Pole c is south- becuase its at it opposite end to B south pole. 25.Magnets are iron and materials that have iron. they attract and repel other magnets. 1 part always points north when allowed to swing freely. 26. The magnetic field is the strongest in the region between the opposite poles of 2 magnets. magnetic field lines are closet.

Quiz Answers 1.magnetic pole 2. magnetic field lines 3. the magnets are attracting each other The 2 poles shown are unlike poles and the field lines go from one pole to the other 4.The 2 poles would repel each other, and the magnetic field lines would be shown curving away from the other magnet. 5 magnetic pole 6. magnetic field lines 7. magnet