Discovery & Uses
Polarity and Fields
Subatomic to Poles of the Earth
Electricity & Magnetism
Miscellaneous
100
Who discovered magnetism?
The Greeks
100
What is polarity?
Having two poles (like north and south) that attract/repel other objects that are polar
100
What is the smallest subatomic particle that magnetic properties?
The electron
100
What is the electromagnetic force?
The attractive/repulsive force between electric charges and magnets
100
What year did the Titanic sink on its maiden voyage?
1912
200
Where was magnetism discovered?
Magnesia (a region of Turkey)
200
What is a magnetic field?
A region of space around a magnet where magnetic force is exerted on other objects
200
When the ____________ of all the atoms in an object are aligned, the object becomes magnetic.
Magnetic domains
200
Who discovered that electricity and magnetism are related?
Hans Christian Oersted
200
What artist painted the ceiling of the Sistine Chapel in Rome?
Michelangelo
300
What were the original magnets made from?
Magnetite
300
What shape do all magnetic field lines take?
They form closed loops that extend from the north pole to the south pole, wrapping around the magnet
300
When all of the magnetic domains are __________ aligned in an object, the object will not be attracted to a magnet.
Randomly
300
How was the relationship between electricity and magnetism discovered?
While doing a demonstration involving electric current, a compass near the circuit started spinning, and it was determined that the electric current was affecting the direction of the compass needle
300
Who was the first woman to win a Nobel Prize (in 1903)?
Marie Curie
400
What is another name for "magnetite"?
Loadstone
400
What direction do magnetic fields go in?
They point away from the north and toward the south pole
400
Describe how you could find your way home if you were lost and only had a needle, a magnet, and a cup of water.
Make a compass by rubbing needle with magnet
Float magnet
Keep track of sun to know E/W
400
What do you need to make an electromagnet?
A power source (like a battery) and a wire
400
What is the term for a word that is spelled the same forwards and backwards?
Palindrome
500
Name all three of the materials that modern magnets are made of.
Neodymium, samarium-cobalt, and alnico
500
Name four things that influence the strength of a magnetic field
Proximity to the magnet, size of magnet, type of material, and temperature
500
Name one African country is in the magnetic north from where we are now (in Mauritania).
500
What is the relationship between solenoids and electromagnetic strength?
The more coils in a solenoid, the stronger the electromagnet.
500
What is the longest mountain range in the world?
The Andes Mountains (stretching over ~7000km through seven South American countries - Venezuela, Colombia, Ecuador, Peru, Bolivia, Chile, and Argentina)