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- 1Laws of Static ChargesAll matter is made up of submicroscopic particles called atoms.
At the center of each atom is a nucleus of protons and neutrons that are immovable.
An electron cloud (negative particles) surrounds the nucleus. These are equal in strength but opposite in charge to the protons.
Like charges repel and unlike charges attract.
In some elements, the hold on electrons is weaker, allowing them to move from one atom to another.
In a single atom (natural state) the number of protons and electrons is equal.
If an atom gains an extra electron, it develops a negative charge. If it loses an electron, it becomes positive. - 2Static Electricity:a charge on a substance that stays in the same place.
- 3Friction & Jumping ElectronsWhen any two objects come in contact, electrons will move from one to the other. In order to increase the flow of electrons, we can use a rubbing motion.
Electrons will transfer from one object to another according to the electrostatic series. - 4ContactContact will give a charge that is opposite to the charged object.
Once an object has built up a charge (usually by friction) that charge can be transferred to another object in a brief instant of contact.
If electrons are forced down a similar path, produces negative charge.
If charge is strong enough and objects are small enough, charge can jump through jumping sparks.
Gold, sulfur, rubber, etc all have strong hold on electrons but can’t build up charges because they absorb the charge right through them and allow it to go through. - 5Electrostatic SeriesAcetate - weakest hold
Rubber, Sulfur, Platinum, Gold - strongest hold - 6Insulators & ConductorsInsulator is any substance where electrons don’t move easily from one to another.
Conductor is a substance that transfers a charge right through itself. - 7Induction:by bringing a charged object to a neutral object, we can “attract” electrons throughout the neutral object either toward or away from the charged object according to the law of static charges.
- 8Dangers of Static ElectricityWhen atmospheric electrons build up in clouds, lightning strikes the ground or travels from cloud to cloud.
Always travels through air particles via the path of least resistance
Mainly hits tall objects, but smaller conducting objects do get hit occasionally.
Grounded lightning rods redirect to the ground instead of through you r house or a neighbours tree - 9What determines the path of least resistanceResistance from water vapour, insulators or pockets of positively charged ions.
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- FlashCards sobre Sem título, criado por Alyssa Lamoureux em 24-11-2019.
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- Alyssa Lamoureux
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