P4- radiation for life- sparks

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  • Created by: tashlyn20
  • Created on: 23-04-16 11:06
what does an atom consist of?
a small positively charged nucleus surrounded by an equal number of negatively charged electrons
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What is a stable/neutral atom?
the atom has the same amount of positive charges (protons) and the same amount of negative charges (electrons)
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what causes electrostatic effects?
the transfer or movement of electrons
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what does the law of electric charge state?
Like charges repel, unlike charges attract
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what happens when a polythene rod is subbed with a duster?
electrons will be transferred from the duster to the rod which makes the rod negatively charged and the duster is now positively charged
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what happens when an acetate rod is rubbed with a duster?
electrons will be transferred from the acetate to the duster making the duster negatively charged and the rod positively charges
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what causes a negative charge?
an excess of electrons
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what causes a positive charge?
a lack of electrons
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what is an Ion?
an atom or molecule that has become charged
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what happens if inflammable gases or vapours are present or if there is a high concentration of oxygen present?
a spark from static electricity could ignite the gases or vapours and cause explosions.
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what happens if a person touches something with a high voltage?
a large amount of electric charges would flow through them to the earth
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what are dust and dirt attracted to?
insulators such as television screens
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what are synthetic materials attracted to?
the body or to each other
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name one way that electric shocks can be avoided?
an object that is likely to become charged is connected to earth so any charge build-up would flow directly down the earth wire.
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name a 2nd way electric shocks can be avoided?
in a factory, the operator stands on an insulating mat which stops charge flowing through the person to the earth
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name a 3rd way that an electric shock can be prevented
shoes with insulating soles can be worn which stops any charge flowing to the earth
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name a 4th way electric shocks can be prevented
fuel tankers can be connected to a conducting cable during refuelling
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how do anti static sprays/liquids/cloths work?
they are made from conducting materials and carry away electric charge which prevents a build up of charge
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Other cards in this set

Card 2

Front

What is a stable/neutral atom?

Back

the atom has the same amount of positive charges (protons) and the same amount of negative charges (electrons)

Card 3

Front

what causes electrostatic effects?

Back

Preview of the front of card 3

Card 4

Front

what does the law of electric charge state?

Back

Preview of the front of card 4

Card 5

Front

what happens when a polythene rod is subbed with a duster?

Back

Preview of the front of card 5
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