Static Electricity
This lesson covers:
- What 'static electricity' is
- How static electricity builds up
- How static electricity can cause a spark
Static electricity is the build up of charge on insulating materials
positive / negative / neutral / protons / electrons / neutrons
- All objects have positively charged and negatively charged .
- Normally, the number of protons and electrons are the same which means the object is overall.
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charge / conducting / insulating / friction / positive
When two objects are rubbed together, the can cause electrons to move from one object onto the other. This can lead to a build up of .
However, this doesn't work for friction between two materials as the electrons would just flow straight back again.
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When two materials are rubbed together, which particles are transferred?
Protons
Electrons
Neutrons
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A material which gains additional electrons will have a:
Positive charge
Negative charge
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When two objects are rubbed together, electrons may be transferred. The object that becomes positive, must have ________ electrons.
gained
lost
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potential difference / charge / protons / electrons
A large build up of on an object can cause a large between the object and the earth.
The large potential difference could allow to jump through the air to earth, causing a spark.
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True or False? The metal body of a car can build up charge from being in contact with the wind.
True
False
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