Electricity
resistance- the force that pushes electricity along wires.
Conductor- a material through which electricity moves through easily.
Insulator- materials that do not allow electric charges to flow through easily.
electric current- a continuous flow of electric charges.
Series Circuit- a simple circuit where the electric charge flow only in one path.
parallel circuit- two or more paths for the electric charges to follow
static electricity- an imbalance of positive and negative charges between two objects.
Open circuit-a broken path of electric charges. This will not allow electricity to occur.
Closed circuit- a continuous path of electric charges that will operate electric objects.
Electromagnet- A magnet made when electric charges that move through a coil of wire wrapped around an iron core, or center.
Magnets
Magnetism- A magnet’s property
to attract certain materials like iron.
Magnet- An object that attracts, or pulls on, certain materials, mainly iron and steel.
North Pole- a magnets north seeking side.
South Pole- a magnets south seeking side.
Attract- pull together
Repel- push away
Compass- magnetized needle free to turn. A tool used with a magnetic pull. A compass always points to the north, through the Earth’s natural magnetic force.
Lines of force- patterns that show a magnet’s field. Lines made by the iron filings.
Magnetic field- space in which a magnet’s force can act.
Lodestone- naturally magnetic rock found at or near Earth’s surface.
Know:
- How the north and south poles respond to each other.
- South and North poles will attract each other.
- South poles will repel South pole.
- North poles will repel north pole.
Use your notes to study the following:
- Examples of items that are attracted by a magnet.
- Examples of items that are not attracted by a magnet.
- Examples of insulators and conductors
- Examples of materials that are conductors of electricity and are magnetic