Magnetic Field I
Magnets have a ___
What is a north and south pole?
This also why a compass points north,
What is lining up with the Earth's magnetic poles?
Magnetic domains are groups of
What are atoms with aligned poles
Temporary: When charged particles move through space, they induce a magnetic field
What is an Electromagnets?
Discovered that certain stones would attract and magnetize iron
What are the Chinese and the Greeks?
Like poles _____
What is repel?
Daily Double:
The Earth has a magnetic field that scientists believe is a result of the dynamo effect due to electrical currents created ________
Can be temporary.
What are magnets?
Electrons have an intrinsic magnetic field that may add together in certain matter to create a magnetic field
What is a permanent magnet?
Were the first to use magnets for navigation
What are the Chinese?
Unlike poles __
What is attract?
They come at irregular intervals averaging about every 300,000 years
What is pole swapping?
Triple jeopardy
How does a speaker work?
Metals that are magnetic
What are nickel, iron, and cobalt
This happens at the South Pole as well. In the southern hemisphere, the lights are called
What is Aurora Australis?
What happens when you break a magnet?
What are two new magnets?
It's also the source of the ____, the dramatic lights that appear when solar radiation bounces off the Earth's magnetic field.
What is the Aurora Borealis?
These are materials that align their domains in the presence of an external magnetic field.
What are soft ferromagnetic?
a substance such as iron in which the magnetic moments of the atoms spontaneously line up with each other net magnetic moment
What is Ferromagnetic?
By varying the electric current through the wires around the electromagnet, the ______ ___ moves back and forth. The resulting vibration of the ____ ____ will create sound waves
What is the speaker cone?
What happens when you bring a compass near a bar magnet?
What is the north point will point to the south pole?
Currents occur at the ________
What atomic level in atoms is due to the orbits of electrons around the nucleus?
Two types of magnets
What are Temporary and Permanent?
When charged particles move through space, they induce a magnetic field.
What is a temporary magnet?
This train moves with the use of magnets
What is a Maglev Trains?