Term
| Where are magnets the strongest? |
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Definition
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Term
| Law of Magnetic Attraction and Repulsion |
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Definition
Opposite poles attract (pull together),
like poles repel (push away)[image] |
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Term
| What is the Earth's core contain mostly? |
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Definition
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Term
| What happens when I hang a magnet from the ceiling? |
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Definition
The North pole of the magnet faces the magnetic South pole of the Earth.
[image] |
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Term
What is always true about a compass?
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Definition
- the needle points to magnetic north and south
- the needle must be magnetized
- the needle is affected by the Earth's magnetic field[image]
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Term
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Definition
| Machine used to produce static electricity[image] |
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Term
| What part of an atom impacts magnetism? |
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Definition
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Term
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Definition
Gather in lines of force and keep them from passing through
[image] |
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Term
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Definition
Wire coil, with an iron core, that becomes a magnet when an electric current flows through it
(Don't be silly - the electricity must be turned on for it to work!)
[image]
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Term
| Three uses of electromagnets: |
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Definition
- Lift heavy magnetic materials
- Make electric motors
- Change electrical energy into mechanical energy
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Term
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Definition
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Term
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Definition
Atomic particle with a NEGATIVE charge
[image] |
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Term
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Definition
Material that allows charges to flow freely through it
[image] |
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Term
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Definition
Build-up of electric charges in an object (this will only shock you and there is not enough energy to run your toaster!)
[image] |
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Term
| What happens when I rub two objects together? |
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Definition
| A charge is created because ELECTRONS move |
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Term
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Definition
Prevents the flow the electric charges
(coating on a wire prevents us from being shocked!)
[image]
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Term
| Dry or Wet Cell (Battery) |
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Definition
Produces electrical energy by converting chemical energy into electrical energy
(The chemicals in the battery create electricity!) |
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Term
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Definition
All or nothing!
All bulbs must work or none of them work!
[image]
(Think about your Christmas Tree lights) |
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Term
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Definition
Lights will continue to work if one bulb goes out
[image] |
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Term
| Order electricity flows through a motor |
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Definition
- 1st brush
- Commutator
- Coil
- Commutator
- 2nd brush
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Term
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Definition
- Motor that works in reverse
- Does not use electricity
- Turned by external energy source to create electricity
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Term
All the bulbs in a Parallel Circuit get the same number of volts from the battery.
(If the battery produces 9 volts, each bulb would get 9 volts) |
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Definition
All the bulbs in a Series Circuit share the number of volts from the battery.
(If the battery produces 6 volts, three bulbs would get 2 volts each)
*If we added a light bulb to a series circuit, they would all get less! |
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Term
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Definition
- If I rub the unmagnetized object against a magnetized object, I can make a magnet!
- If I cut a magnet in half, two smaller magnets will be created!
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Term
| Fun fact: I can never turn off a permanent magnet! |
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Definition
| Fun fact: To make a stronger electromagnet, just use a longer wire with more coils! |
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