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P4a - Sparks

blue belle Science GCSE Inglés 7 fichas

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1What do like charges do? and What do unlike charges do?like=repel
unlike=attract
2Explain static electricity in terms of movement of electrons:When two materials are rubbed against each other electrons are transferred.
- a lack of electrons = positive charge
- a excess of electrons = negative charge
3What do atoms or molecules that are charged become?IONS
4How static can be a nuisance?-Dirt and dust attracted to insulators (plastic containers, TV monitors etc)
-Causing clothing to cling
5How can static electricity be dangerous?-in atmospheres where explosions could occur (eg. inflammable gases or vapours or with high concentration of oxygen)
-in situtations where large quantities of charge could flow through the body to the earth (eg. airplanes)
6How can you reduce the chance of receiving an electric shock?-correcting earthing
-use of insulating mats
-using shoes with insulting soles
-bonding fuel tanker to aircraft
7How do anti-static sprays, liquids and cloths reduce the problems of static electricity?They carry away electric charge, which prevents a build up of charge

Descripción: GCSE (P4) Science Fichas sobre P4a - Sparks, creado por blue belle el 27/02/2016.
Creado por: blue belle
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