Download Chapter 36 Summary – Magnetism

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Blue Book Outline – Chapter 14, section 1
A. Magnetism – the properties and _____________________ of magnets.
1. Interaction between two magnets, called magnetic ______________________, increases as magnets move closer.
2. A magnetic _____________________, which exerts the magnetic force, surrounds a magnet, and is strongest
_____________________ to the magnet.
B. Magnetic __________________ - the regions of a magnet where the magnetic force exerted by the magnet is strongest.
1. All magnets have a _________________ pole and ________________ pole that cannot be isolated.
2. Like poles _________________, unlike poles __________________.
3. Earth has magnetic poles.
a. A compass needle is small bar magnet that can freely ___________________.
b. A compass needle always points ____________________.
C. Magnetic materials – _______________________, cobalt, and nickel.
1. The magnetic field created by each ___________________ exerts a force on nearby atoms.
2. Magnetic domains – groups of atoms with ___________________ magnetic poles.
a. In a magnet, the like poles of all the domains point in __________________ direction.
b. ____________________ magnets are made by placing a magnetic material in a strong magnetic field, forcing a large number
of magnetic domains to line up.
Blue Book Outline – Chapter 14, section 2
A. Moving charges and magnetic fields
1. Moving charges, like those in an electric current, produce _________________ fields.
a. The magnetic _________________ around a current-carrying wire forms a circular pattern about the wire.
b. The direction of the field depends on the ___________________ of the current.
c. The ___________________ of the magnetic field depends on the amount of current flowing in the wire.
B. Electromagnet – a ____________________ magnet made by placing a piece of iron inside a current-carrying coil of wire.
1. Magnetic ___________________ is present only when current is flowing in the wire coil.
2. Increase strength of the magnetic field by adding _______________ ________________ to the wire coil or increasing the
__________________ passing through the wire.
3. Magnetic properties of electromagnets can be controlled by changing the _________________ _________________ flowing
through the wire coil.
4. Converts electrical energy into ___________________ energy to do work.
C. Galvanometer – a device that uses an electromagnet to measure ___________________ __________________.