gpv - science 4th

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Author:
Anonymous
ID:
144000
Filename:
gpv - science 4th
Updated:
2012-04-02 16:26:00
Tags:
magnetism
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Description:
magnets, poles, etc.
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  1. An object that attracts or pulls on certain materials, mainly iron and steel is called a ____
    magnet
  2. Space in which the force of a magnet can act is a _____ ______. (2 words)
    Magnetic Field
  3. The end of the magnet that points toward the north when the magnet moves freely.
    North Pole
  4. The lines that form a pattern showing the size and shape of a magnetic force field.
    Lines of Force
  5. A ganet's property of attracting certain materials _____
    magnetism
  6. A device containing a magnetized needle that moves freely and is used to show direction is called........
    Compass
  7. The end of magnet that points toward the south when the magnet moves freely is called the ______/
    South Pole
  8. A naturally magnetic rock found at or near the Earth's surface is called _____/
    Lodestone
  9. How do like poles of two magnets react to each other?
    repel from one another
  10. How do unlike poes react to each other?
    attract
  11. A type of magnet that doesn't keep it's magnetism very long.
    temporary magnet
  12. Name a type of magnet that keeps its magnetism for a long time.
    Permanent
  13. An object that attracts materials such as iron and steel is called a ____/
    magnet
  14. Magnet is to visible as magnetic field is to ______.
    invisible
  15. Lines formed by iron filings near a magnet are ___ of ___.
    Lines of Force
  16. The force of a magnet is greatest at its (center, poles)?
    poles
  17. A magnet can be used to pick up (wood, iron).
    iron
  18. If the south poles of two magnets are brought near each other, the poles (attract/repel) each other.
    repel
  19. An electric discharge is the (loss/gain) of an electric charge?
    loss
  20. The units of electricity that some particles of matter carry are called _____ ______.
    Electric Charge
  21. Insulators are materials through which electricity (does not or does) move easily.
    DOES NOT
  22. True or False

    An electric circuit that has more than one path along which electric current can travel is a parallel circuit.
    True
  23. True or False

    Electric current
    is the continuous flow of negative charges.
    True
  24. A device that opens or closes a circuit is called a _____.
    switch
  25. The buildup of electric charges on the surface of an object is called ______ ________.

    (ex: a balloon to a wall, your hair sticking up)
    static electricity
  26. Materials taht allow electricity to pass through them easily are called __________.

    (train driver)
    conductors
  27. True or False:

    A series circuit is an electric circuit in which the parts are connected in many paths.
    False, connected in a SINGLE path

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