¿Cómo funcionan los imanes?
Interactive Video
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Science
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10th - 12th Grade
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Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the historical origin of the term 'magnet'?
It is named after a famous scientist.
It originates from the Turkish region of Magnesia.
It is derived from the Latin word 'adamant'.
It comes from the Greek word for 'stone'.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are not all elements magnetic?
Because their electrons are paired, canceling out magnetic fields.
Because they are too hot.
Because their atoms are too large.
Because they lack electrons.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the Curie temperature?
The temperature at which a material becomes a superconductor.
The temperature above which a material loses its permanent magnetic properties.
The temperature at which all elements become magnetic.
The temperature below which all metals become non-magnetic.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How are the most powerful magnets in the world made?
By aligning magnetic fields with copper.
By using pure iron.
By cooling magnets to absolute zero.
By using an alloy of Neodymium, Iron, and Boron.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when an electric current passes through an iron core?
It creates a gravitational field.
It generates a magnetic field.
It causes the iron to melt.
It produces a sound wave.
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