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Mrs. Guzas' test. Easy!!!!!!!!
The eassiest test alive
26
Science
7th Grade
10/08/2008

Additional Science Flashcards

 


 

Cards

Term
A positivley charged particle in an atom
Definition
proton
Term
an uncharged particle in an atom
Definition
neutron
Term

a negatively charged particle in an atom

 

Definition
electron
Term
The totol electric charge on an object
Definition
static electricity
Term

The area that surrounds an electron

 

Definition
electric field
Term
a material that lets electrons go through it easily
Definition
conductor
Term
a material that doesn't allow electrons to flow easily
Definition
insulator
Term
a devise that can detect the presence of electric charges
Definition
electroscope
Term
a closed path or loop through which electrons can flow
Definition
circuit
Term
the flow of electrons in a circuit
Definition
current
Term
Measures the difference in energy between the negative and posistive terminals of a battery
Definition

voltage

Term
the tendancy of a material to oppose the flow of electrons
Definition
resistance
Term

a device with a small piece of metal. When the metal gets hot it will bend

Definition
circuit breaker
Term

a device with a small piece of metal. when the metal gets hot it breaks

Definition
fuse
Term
the property of matter where there is an attractive force between two unlike poles and a repulsive force between the like poles
Definition

magnetism

Term
the area around the magnet where the magnetic force has an infulence
Definition
magnetic field
Term

the group of atoms whose magnetic poles are all aligned in the same direction

Definition
magnetic domains
Term
An iron core with a wire wrapped around it. when a current runs through the wire, it creates a strong temporary magnet
Definition
electromagnet
Term
a device that changes electric energy into mechanical energy
Definition
electric motor
Term
the process of moving a wire through a magnetic field to make an electric field 
Definition
electromagnetic induction
Term
a device that produces an electric current by rotating a loop of wire in a magnetic field  
Definition
generator
Term
Current that changes direction on a daily basis
Definition
alternating current, AC
Term
Current that does not change direction
Definition
direct current, DC
Term
a device that increases or decreases the voltage of an alternating current
Definition
transformers
Term
the ends of a magnet
Definition
magnetic poles
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