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13 Cards in this Set
- Front
- Back
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atoms have a central nucleus... |
with electrons moving around it |
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what is the nucleus.. |
is tiny but makes up most of the mass - contains protons (positive) and neutrons (neutral) = gives an overall positive charge |
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build up of static caused by friction.. |
If 2 insulating materials are rubbed together the electrons = scrapped off 1 - dumped one the other positive static charge on 1 and a negative static charge on the other. Only electrons can move - not protons |
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like charges repeal.. |
unlike charges attack = opposites attract |
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static electricity and often cause.. |
little sparks or shocks |
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proton and electrons.. |
similarities = both have a single electrical charge differences = protons are positive and electrons are negative, have different masses. protons = found in nucleus electrons = found whizzing outside the nucleus |
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lighting caused by .. |
build up of static charge. Rain drops and ice bump together inside storm clouds, knocking off top electrons - leaves top of cloud positively charged + the bottom of cloud = negative. Huge voltage = big spark |
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clothing crackles... |
when sythenic clothes are dragged over each other - or over your head : electrons scrapped off = static charges = attraction and little sparks - charges rearrange themselves |
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car shocks ... |
charge build up between, the synthetic car seats and your clothes = friction between electrons - scrapped off = touch meta door - charge flows - conducting strips |
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shocks from door handles... |
nylon carpet and insulating soles = transfer of electrons from carpet to you = charge will build. Charge will flow when you touch a metal door handle. |
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balloons sticking to walls.. |
rubbing along hair or clothes = causes electrons to be transferred to the balloon = negative charge will stick to wall because - negative charges on balloon repeal neg charges on the wall. Leaving positive charge on the surface - attracting the negatively charged balloon = the attraction holds it on the wall |
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a charged comb can pick up small bits of paper.. |
as when you brush your hair negative charge = of electrons left on it. They can be used to pick up bits of paper - causes induction on the paper |
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direct current.. |
always in the same direction - meaning the charge moves in one direction only. Always at the same voltage, get a straight line |
