Properties and Uses of a Magnet

The video explains the properties and uses of magnets, starting with Zack using a magnet to find an earring. It covers various applications of magnets in daily life, such as in fridges and garbage dumps. The video also discusses how to care for magnets to maintain their properties, including avoiding heat and rough handling. Historical uses, like Huangdi's chariot, are mentioned, highlighting the orientation property of magnets. Finally, it explains the behavior of magnetic poles, including attraction and repulsion.

What property of magnets did Zack use to find the earring?

• Repulsion

• Attraction

• Separation

• Orientation

Which of the following is NOT a recommended practice for maintaining a magnet's properties?

• Exposing it to heat

• Placing a soft iron piece across the ends

• Storing it with opposite poles together

• Using a wooden separator

How did the Chinese emperor use magnets for navigation?

• By observing the sun's position

• By using a magnetized statue

• By following the stars

• By using a magnetic compass

What happens when a magnet is freely suspended?

• It spins randomly

• It points north-south

• It loses its magnetism

• It points east-west

What occurs when like poles of two magnets are brought close?

• They attract each other

• They repel each other

• They lose magnetism

• They become stronger

If a magnet is cut in half, what happens to its poles?

• Each half loses its poles

• Each half has only one pole

• Each half becomes a new magnet with both poles

• The poles disappear

Where is the magnetic effect of a magnet strongest?

• At the center

• At the poles

• Equally throughout

• At the edges