Magnetic Poles
Ends of a magnet.
What are poles?
When was the first magnet discovered?
The first magnets were not invented, but rather were found from a naturally occurring mineral called magnetite. Traditionally, the ancient Greeks were the discoverers of magnetite. There is a story about a shepherd named Magnes whose shoe nails stuck to a rock containing magnetite.
Do things like wood, plastic, and rubber stick to magnets?
What is no?
What kind of magnet is Earth?
What is a bar magnet?
What is a magnetic field?
The area around a magnet that attracts metals
What are the two poles on a magnet called?
What are North and South Poles?
Who invented the magnetic compass?
The magnetic compass was first invented as a device for divination as early as the Chinese Han Dynasty (since about 206 BC). The compass was used in Song Dynasty China by the military for navigational orienteering by 1040–44, and was used for maritime navigation by 1111 to 1117.
How are most magnets made?
What is by people?
Where are the magnetic poles of the Earth located?
What is near our North and South poles?
If a material is magnetic, how are its atoms lined up?
What are they are lined up in the same direction?
Which poles repel each other on two magnets?
What are the poles of the same type or North and North/South and South?
Who discovered the electromagnetic waves?
Heinrich Rudolf Hertz
Heinrich Rudolf Hertz (German: [hɛɐʦ]; 22 February 1857 – 1 January 1894) was a German physicist who first conclusively proved the existence of the electromagnetic waves theorized by James Clerk Maxwell's electromagnetic theory of light.
What is lodestone?
What is a rock that is naturally magnetic?
Why does a compass work?
What is the needle is magnetized?
If you cut or break a magnet, will each piece still have the same magnetic poles?
What is Yes?
What is it called when two magnets pull together?
What is attract or attraction?
When was the first electromagnet made?
1825
Electromagnet invented 1825 by William Sturgeon. In 1825, Lancastrian electrician, William Sturgeon, revealed his invention of the electromagnet. This enabled electrical energy to be used in the design of controllable machinery.
Who invented the first practical electric motor?
The first commutator DC electric motor capable of turning machinery was invented by the British scientist William Sturgeon in 1832.
What do magnets commonly attract?
What are certain kinds of metal?
What direction does a compass needle point?
What is North?
Name two ways you can demagnetize a substance.
What is striking it with a hard blow and heating it?
Which poles attract each other on two magnets?
What are the poles of different types or North and South/South and North?
Who was the founder of electromagnetism?
André-Marie Ampère, (born Jan. 22, 1775, Lyon, France—died June 10, 1836, Marseille), French physicist who founded and named the science of electrodynamics, now known as electromagnetism. His name endures in everyday life in the ampere, the unit for measuring electric current.
Name four shapes of magnets.
What are horseshoe, bar, cylinder, and doughnut?
Which magnetic pole is the Earth's North Pole?
What is South Pole?
Why do some farmers have their cows swallow magnets?
What is because cows eat all kinds of metal and the magnet holds them in place in their stomachs so they aren't injured?