ELECTRICITY AND MAGNETISM

6º. Unit 8.

ELECTRICITY

  Electricity has been known since ancient times, but scientists could not make use of it safely until the eighteenth century. Thomas Edison's invention of the electric lightbulb in 1879 sparked the demand for electric power that continues to this day, ultimately resulting in the need for legislative and regulatory controls on the electric-power-generating industry.

 

 Electrical charge.

Static electricity

Static electricity is the build up of an electrical charge on the surface of an object. It's called "static" because the charges remain in one area rather than moving or "flowing" to another area. We see static electricity every day. It can even build up on us. For example, when we rub our feet on the carpet and then zap something when we touch it. That is static electricity that we have built up on the surface of our skin discharging onto another object. We also see it when our hair gets charged and sticks straight up or when our pant legs keep sticking to our legs. This is all static electricity that has built up on the surface of an object.

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  Static electricity is the build up of an electrical charge on the surface of an object. It's called "static" because the charges remain in one area rather than moving or "flowing" to another area. We see static electricity every day. It can even build up on us. For example, when we rub our feet on the carpet and then zap something when we touch it. That is static electricity that we have built up on the surface of our skin discharging onto another object. We also see it when our hair gets charged and sticks straight up or when our pant legs keep sticking to our legs. This is all static electricity that has built up on the surface of an object.

 

 Curret electricity

What is current electricity?

Electric current in simple terms are electrons in motion along a path, regardless of the number of electrons flowing. The path may be a conductor such as copper, silver and aluminium. Free electrons can be forced to move from one region of the conductor to the other. 

  GAMES

MORE GAMES

• http://interactivesites.weebly.com/electricity-and-energy.html

MAGNETISM

Most people are familiar with magnets primarily as toys, or as simple objects for keeping papers attached to a metal surface such as a refrigerator door. In fact the areas of application for magnetism are much broader, and range from security to health care to communication, transportation, and numerous other aspects of daily life. Closely related to electricity, magnetism results from specific forms of alignment on the part of electron charges in certain varieties of metal and alloy.

           3. Magnetic pole

 1. Either of two small regions which are located respectively in the polar areas of the northern and southern hemispheres and toward which a compass needle points from any direction throughout adjacent regions; also :  either of two comparable regions on a celestial body

2 :  Either of the poles of a magnet.

 

Magnets and Electromagnets

  Magnets All Around Us

LINKS

• ELECTRICIDAD Y MAGNETISMO
• Esquema unidad 8 
• Magnets and electric current
  
  

  CIRCUIT