Chapter 10 glossary card terms
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A form of energy that results from the interaction of charged particles, such as electrons or protons.
Static charge (static electricity)
An electric charge that remains "static" or doesn't move.
Charging by friction
Involves the transfer of electric charge by rubbing or friction (e.g. walking across a carpet, combing your hair)
- - used to determine the type of electric charge produced on each substance when 2 substances are rubbed together
- - substances high in the list lose electrons and become positively charged (net change)
- - Substances lower in the list become negatively charged (net change)
- - The closer two substances are on the list the weaker the ability to transfer electrons
A material in which electrons cannot move easily from one atom to another
A material in which electrons can move easily between atoms
A material in which electrons can move fairly well between atomsn
A ground has a very large number of charges. It can supply electrons to a positively charged object and can remove electrons to a negatively charged object. The object becomes neutral, and remains neutral. A conductor is grounded if electrons are free to flow between the conductor and Earth.
A device for detecting the presence of an electric charge
Charging by contact
- generating a charge on a neutral object by touching it with a charged object
Laws of electric charges
Laws that describe how 2 objects interact electrically.
- 1. Like charges repel
- 2. Opposite charges attract
- 3. Charged and neutral objects attract each other
- - The property of the space around a charged object, where the effect of it's charge can be felt by other objects
- - An electric field produces an electric force on other objects are in the field
- -Objects with greater net charges have stronger electric fields
- - the greater the distance from a charged object the weaker the electric field of the object is
Induced charge separation
The movement of electrons in a substance caused by the electric field of a nearby charged object, without direct contact between the substance and the object.
an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
A pole placed on the very top of a tall object, used to absorb electricity from lightning strikes and send it into the ground
It's a type of cleaner used to remove unwanted particles and liquid droplets from gas.
Van de Graaff generator
These generators are atom smashers that have been used since the 1930's. They can accelerate particles to very high speeds. Sometimes new subatomic particles are formed by this process.
It detects and measures exposer to radiation. people who work with radioactive materials have to where them. Some radiation dosimeters work like metal leaf electroscopes, as a charge produced by radiation causes the leaves to come closer together and to non-charged position, indicating the presences of excessive radiation.
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