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Chapter 7 science
Chapter 7 science test
17
Science
9th Grade
02/13/2013

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Cards

Term
Where is electricity?
Definition
Electricity is everywhere. It is in atoms.
Term
Build up of electric charge in one single location is called what?
Definition
Static electricity
Term
Which two people discovered static electricity?
Definition
Charles Du Fay (studied frogs) and Benjamin Franklin (kite in the thunderstorm)
Term
What are the three different types of static electricity?
Definition
Positive, negative, neutral
Term
Cotton, glass, and amber attract what? What do they repel?
Definition
They attract negative, and repel positive
Term
Vinyl, silk, wool, and fur attract what? What do they repel?
Definition
They attract positive, and repel negative.
Term
What is neutral attracted to?
Definition
Both positively and negatively charged electrons.
Term
Where does electric charge come from?
Definition
Electrons. Electrons surround the nucleus in the atom.
Term
Build up of electric charge is called what?
Definition
A coulomb.
Term
How much is one coulomb?
Definition
6.24 x 10 to the power of 18
Term
How does a static charge occur?
Definition
By build up of electrons in one place.
Term
What are some dangers in generating static electricity?
Definition
Unwanted build up of electrons, and grounding too deep
Term
A force is a what?
Definition
A push or a pull
Term
What charges repel each other?
Definition
Like charges (Positive and positive, and negative and negative)
Term
What charges attract each other?
Definition
Opposite charges (Positive and negative)
Term
What charges does a neutral charge attract?
Definition
Either/both positive or negative.
Term
What causes a build up of electrons?
Definition
Friction, conduction, lost electron object becomes positive, gained electron object becomes negative
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