vocab
Magnetism
property of some materials that allows them to give off an attractive or repulsive force.
Electric motor
device that uses an electromagnet to convert electrical energy into mechanical energy.
Describe the force that exists between magnetic objects. Include where it is the strongest, and how this force acts similarly to other forces we’ve learned about.
-Force between magnetic objects is the magnetic field.
-It is strongest at the poles.
-It is similar to electrical force in that opposites attract and like repel.
-It is similar to gravitational force in that the closer you are to it, the stronger it feels.
Magnet
a material that gives off an external magnetic field, making it possible to apply a force over a distance.
Generator
device that uses an electromagnet to convert mechanical energy into electrical energy.
Explain the relationship between magnetic fields and magnetic force.
-Magnetic fields are the external forces given off by magnets. They make it possible to apply a force over a distance.
Magnetic field
external force given off by a magnet; strongest at the poles.
Differentiate between the magnetic domains on magnetic elements vs. non-magnetic elements.
-Magnetic elements have aligned magnetic domains, nonmagnetic do not.
Ferromagnetism
phenomenon where objects placed in a strong magnetic field become magnetized due to the poles within their atoms aligning (all e- in same direction).
Explain the relationship between electricity and magnetism.
-Electrical current can produce a magnetic field, counterclockwise from the direction the current is traveling.
Electromagnet
temporary magnet made by placing a piece of iron inside a current carrying coil of wire.
List the two ways to increase the strength of an electromagnet.
-Increase the number of loops.
-Increase the strength of the current.