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Science
Study Guide
13
Science
7th Grade
02/16/2010

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Cards

Term
Nucleas
Definition
The center of every atom.
Term
Nucleas
Definition
The center of every atom.
Term
Where is a magnetic the strongest at.
Definition
A pole is the area of a magnet where the magnetic effect is strongest.
Term
Magnetic Field Lines
Definition
Lines that map out the magnetic field around a magnet.
Term
What happens if you break it in two.
Definition
If the magnet is cut in half,the domains will still be lined up in the same way. So the shorter pieces will still have strong ends made up of many north or south poles
Term
Magnetic Declination
Definition
The angle between geographic north and the north to which a compass needle points.
Term
How does the Solar Wind help the Magnetic Field.
Definition
The Solar Wind pushes against Earth's Magnetic Field,and surrounds the field.
Term

Insulators And Conductors

Definition

Insulators- A material through which the charges of an electric current are not able to move.

Conductors-  A material through which electrons move freely, forming an electric current.

 

Term
Super Conductor
Definition
A material that has no electrical resistance
Term
How do you increase the strength of the electromagnet? (three ways)
Definition
The current in the solenoid,You can add more loops of wire to the solenoid, you can wind the coils of the solenoid closer together.
Term
Electric Circuit
Definition
Is a complete path through which electric charges can flow. 
Term
Know the difference geographic and magnetic poles?
Definition
You can see the difference between the magnetic and geographic poles more clearly by imagining lines that connect each set of poles together.
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