Electricity and magnetism are covered in this unit. Electricity is the movement of electrons, and objects can be neutral, positively charged, or negatively charged depending on the balance of protons and electrons. Electric current is the flow of electrons in conductors. Electricity is generated in power plants and distributed through power lines to where we consume it and transform it into other forms of energy. Electric circuits require a conductor, power source, resistor, and switch to conduct current and do work. Magnets can attract metals, with opposite poles attracting and like poles repelling. The Earth acts as a giant magnet that creates its magnetic field with a north and south pole.

1. UNIT 8
Electricity and magnetism
By: CHRISTIAN BERG NAVARRO
6ºA

2. ELECTRICITY
ELECTRICITY NEUTRAL OR
Everithing in CHARGED ?
nature es made of An equal number of
protons and electrons is
atoms . electrically neutral.
Protons : More protons : positively
charged.
positive More electrons : negatively
charged.
Electrons : Electrons can move.
negative

3. ELECTRIC CURRENT
• Elecric current es the movement of electrons.
• CONDUCTORS and ELECRONS.
• ELECTIC ENERGY:
• Electricity can be generatedin power plants.
• 1 POWER PLANTS GENERATE ELECTRICTY .
• 2 POWER LINES DISTRIBUTE ENERGY.
• 3 WE CONSUME ELECTRICITY.
• We can transform energy in the form of:
• LIGHT , HEAT, MOVEMENT and SOUND.

4. ELECRIC CIRCUITS (LO QUE NO ME SALE)
• In a electic circuit , electric current is conducted along a path and used to do work.
• An electric circuit is composed of various parts:
• A CONDUCTOR, A POWER SOURCE, A RESISTOR and A SWITCH.
• MAGNETISM
• A magnet can attract iron and other metals .
Opposite poles attract .
• Same poles repels.

5. THE EARTH’S MAGNETIC FIELD
• The Earth es like an enormous magnet with two poles. This
creates a magnetic field around the planet.
• A compass is a device with a magnetic needle that points to the
north pole.