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PS: Ch 13-14 T
| Question | Answer |
|---|---|
| An electric field where the strength is evenly distributed | uniform field |
| If the number of loops in an electromagnet's coil is tripled, the strength of the electromagnet is | tripled |
| magnet made from a magnetically hard substance is a | permanent magnet |
| If the strength of a magnet triples, the force between it and another magnet | triples |
| object with no electrical charge | neutral |
| Most important cause of magnetism | electron spin |
| region surrounding a charged object where other objects are attracted or repelled by an electrical force is known as | an electric field |
| Opposite charges __?__ | attract |
| Same charges __?__ | repel |
| compass that swings vertically to reveal the angle at which lines of flux enter the earth | dipping needle |
| display of shimmering light formed by high-speed particles spiraling into the upper atmosphere and hitting air molecules | aurora |
| William Gilbert propose that the Earth has a magnetic field in what book | De Magnete/On the Magnet |
| "dry writing" that uses electric charges to reproduce images on paper | xerography |
| Electric charges are considered __?__ electricity | static |
| Tripling the current increases the strength of an electromagnet by a factor of | 8 |
| If the distance of two magnets is cut in half, what happens to the strength of magnetic force | doubled |
| phenomenon that causes a vertical compass to point downward in the Northern Hemisphere | Inclination |
| two points on a magnet where the magnetism is focused | poles |
| extent an object can absorb magnetic flux is known as the material's | permeability |
| Object that has only one unpaired electron per atom and is weak | paramagnetic |
| process of transferring a charge from one object to another by touch | conduction |
| Lines connecting points of equal inclination | isoclinic lines |
| states since poles repel then unlike poles attract | law of magnetic poles |
| naturally occurring magnet | Lodestone |
| interactions between electrons and other charged particles | electricity |
| __?__ is the temperature above the ferromagnetic material that has no domains | curie point |
| boundary of the magnetosphere | magnetopause |
| imaginary circle around the earth halfway between the magnetic poles | magnetic equator |
| stream of charged particles that comes from the sun | solar wind |
| group of aligned atoms that have a single magnetic field | domain |
| The two vast belts trapped in the Earth's magnetic field are known as the | Van Allen radiation belts |
| the angle of __?__ is the amount by which a compass needle deviates from true north | declination |
| nickname for the north magnetic pole of the earth | "south-seeking" pole |
| force that changes the path of a charged particle moving through a magnetic field | deflecting |
| simple device that detects small electric charges | electroscope |
| 3 methods of magnetization | contact, electricity, induction |
| flow of charge | current |
| having an excess of electrons gives a __?__ charge | negative |
| process of bringing a charged object near, but not touching, a neutral object | induction |
Created by:
Mrs. Sechrist
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