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science test ch.2 L3

A _____ is an object that attracts iron and other materials that have magnetic qualities similar to iron. magnet
Any material that a magnet attracts is a ____ _____. magnetic material
A _____ ______ is a push or a pull a magnetic field applies to either a magnetic material or an electric current. magnetic force
A magnet field and its force are _____ closer to the magnet and ____ farther away from the magnet. stronger, and weaker
Every magnet has ______ magnetic poles. two
If two magnetic south poles or two magnetic north poles are close each other , the magnets ______. repel
If a magnet's magnetic north pole is near another magnet's magnetic south pole, the magnets ______ each other. attract
Flowing molten iron and nickel in the earth's outer core create a _____ _______ around the earth. magnetic field
the earth's magnetic south pole is near the earth's geographic _____ pole. north
A ______ ______ is a region in a magnetic material in which the magnetic fields of the atoms all point in the same direction. magnetic domain
Non-magnetic materials cannot be made into ______. magnets
A magnetic material becomes a magnet as the magnetic fields of the materials magnetic domain line up to point in the same _____. direction
A magnet that loses its magnetic fields quickly is called a _____ magnet. temporary
A magnet that keeps its magnetic fields for a long time is called a _______ magnet. permanent
A naturally occurring permanent magnet called _____ is found in the earth's crust. lodestone
Permanent magnets can be made with electric devices called ______. magnetizers
In 1820, the Danish scientist ____ ____ _____, noticed that a compass needle moved when a nearby electric current was switched on. Hans Christian Orsted
The relationship between electricity and magnetism is called _______. electromagnetism
A temporary magnet made with a current-carrying wire coil wrapped around a magnetic core is an ______. electromagnet
The strength of an electromagnet can be controlled with the number of ____ in the coil and the amount of electric ___ in the coil. loops and current
Created by: kkroberts6