Magnets History

What was the name of the person that discovered the first time the loadstones?

• William Gilbert

• Magnes

• Hans Cristian

TRUE OR FALSE.

The objects that helps Magnes to discover the lodestones were the nails in his shoes and the metal tip of his staff:

• TRUE

• FALSE

Chinese people used a spliter of lodestone as mariner's (a)   .

The conclusions that William GIlbert gave after he finished his work, were:

• It exist a connection between magnetism and

  the Earth.

• Earth itself must be magnetic.

• Loadstones were magnetic stones.

• Magnetic current.

What is the best way to let evidence about scientific work?

• Drawings.

• Written papers.

• Documents.

• Scientific paper.

What are the main Discovery that Hans Cristian Oerstes left to us?

• A wire would cause a magnet to move the wire.

• The creation of scientific paper.

• The replitation of his work.

• The connection between the magnetism and the Earth.

Because of the use of models and improved knolewdge of (a)   the way magnetism work is now understood bertter.

In what year the information became reachable on a global scale?

• 1600

• 4000 years ago

• 1800

• 1920

What is the name of the materials used in 1970 in many technologies?

• Specialized magnets.

• Bigger magnets.,

• Rare-earth magnets.

• Earth magnets.

Select two benefits of "the rare-earth magnets"

• They are smaller and compact.

• They have a better appearance.

• They are much stronger than conventional iron magnets.

• The help to save energy across the world.