Magnetism Project

Magnetism Project

V. Generator

A) Definition:

1. A dynamo or similar machine for converting mechanical energy into electricity.

B) Examples

1. Portable Generator 2. Fresh Water Generator

C) How do Generators Work?

1. Many of the generators function with electromagnetic induction. This is where the flow of an electric charge is changed by moving the electric conductor in a magnetic field.

II. Magnetic Field

A) Definition:

1. A region around a magnetic material or a moving electric charge within which the force of magnetism acts.

B) Magnetic Field in a Bar Magnet

C) Magnetic Field in a Current Carrying Wire

IV. Motor

VI. Applications of Magnetism

A) Definition:

1. A machine, especially one powered by electricity or internal combustion, that supplies motive power for a vehicle or for some other device with moving parts.

B) Examples

1. Food Processor 2) Car Motor

C) How Do Motors Work?

1. Most motors pass changing current through different types of magnets to make a magnetic field, This causes the magnetic field in the motor's rotor to spin around and create energy.

I. Magnetism

A) MRI

1. The water molecules inside the human body align in a powerful magnetic field. The powerful magnet forces the nuclei to align so that an image can be produced.

B) Flash Drive

1.Once connected to the outlet the source sends off electric currents powering the flash drive enabling it to receive messages.

C) Alternator in car

1. What is it? It is an electric generator in the car

2. How it works-a stationary set of wire coil windings spin around causing the generator to work and keep the car working

III. Induction

A) Moving Charges and Magnetic Fields

1. Magnetic Field-releases force on any moving charge that is in the field

2. Moving charges- a charged moving particle that does not change speed that creates a magnetic field.

B) Changing Magnetic Field and an Electric Field

1. Changing Magnetic Field-this is where any change that occurs in a coil, then the voltage will increase

2.Electric Field- when a region around a charged particle is released on other charged particles.

A) Definitions of Magnetism:

1. The properties of attraction possessed by magnets; the molecular properties common to magnets

2. The agency producing magnetic phenomena.

3. A strong attractive power or charm

B) Two Poles of a Magnet:

1. There are two different poles in a magnet, the north and the south pole. When the north and south pole are placed near each other they are attracted to each other. however when two of the same poles are placed each other they are repelled.

C) Magnetic North Pole v. Geographic Pole

1. Whenever using a compass, the needle will always point to the magnetic north pole. However, just because the needle points to the magnetic pole, it does not mean that it is the geographic north pole. Unlike the magnetic north pole that remains the same, the geographic north pole is constantly changing due to the boiling liquid metal that surrounds the Earth's inner core.

D) What is a domain and how it relates to whether a ferromagnetic object is actually a magnet

1. Domain: a region in a magnetic object where the magnetization is in the same direction.

2. Ferromagnetic is an extremely powerful magnet that changes depending on the magnetizing field.

By Chiara Lang