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| Electric charges produce electric force; magnetic poles produce ______________ ___________. |
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| Can or cannot. Electric charges can be isolated, magnetic poles ___________ be isolated. |
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| cannot, A north magnetic pole never exists without the presence of a south pole. |
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| An electric charge is surrounded by an electric field. If an electric charge is moving, it is surrounded by an electric field and a ________________ field. |
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| T or F. A magnetic field is a by-product of an electric field in motion. |
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| Where is the motion of an electric charge in a bar magnet? |
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| Every spinning electron in a magnet is a tiny magnet. Since the magnetite has atoms oriented in the same direction-a magnet is formed with a strong magnetic field. |
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| Name a microscopic cluster of atoms that have their magnetic fields aligned. |
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| Does an electric current produce a magnetic field? |
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| Yes-A moving charge produces a magnetic field. |
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| A current-carrying coil of wire with many loops is called a(n) _______________. |
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| What happens to a wire with no current flowing through it when it is placed inside a Horseshow magnet? |
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| What happens to a current carrying wire when it is passed through a magnetic field? |
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| It is deflected up or down, ┴ to the magnetic field lines. |
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Term
| The earth is a large magnet. When charged particles of cosmic radiation enter earth’s atmosphere what happens to them? |
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| Cosmic radiation (mostly + particles) is deflected near the equator because the magnetic field lines are ┴ to the incoming particle. Cosmic radiation is allowed to enter at the North (Aurora Borealis) and South (Aurora Austral is) Poles, because the magnetic field lines are ║to the incoming particle. At the poles, (-) particles are responsible for the Aurora phenomenon. |
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| A magnet produces a _________ on a current-carrying wire, so a current-carrying wire produces a _________ on a magnet? |
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| The discrepancy between the orientation of a compass and true north is known as ____________ ___________. |
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