Forces At A Distance

Front

What is magnetism?

Back

Magnetism is a type of force at a distance that can attract or repel certain materials without direct contact.

Front

What are the two main types of magnets?

Back

The two main types of magnets are permanent magnets and electromagnets.

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet that is created by an electric current and can be turned on or off.

Front

What is a force at a distance?

Back

A force at a distance is a force that can act on an object without physical contact, such as gravitational, magnetic, or electric forces.

Front

How does distance affect magnetic force?

Back

The greater the distance between a magnet and an object, the less magnetic force is exerted on that object.

Front

What components are needed to create an electromagnet?

Back

An electromagnet requires a power source, coils of wire, and a core material (often iron).

Front

What happens to an electromagnet when the electrical current is turned off?

Back

When the electrical current is turned off, the electromagnet loses its magnetic properties and no longer attracts magnetic materials.

Front

What is a permanent magnet?

Back

A permanent magnet is a magnet that maintains its magnetic properties without the need for an external power source.

Front

Can magnets attract non-magnetic materials?

Back

No, magnets can only attract ferromagnetic materials like iron, nickel, and cobalt.

Front

What is the difference between a contact force and a force at a distance?

Back

A contact force requires physical touch to act (like friction), while a force at a distance can act without contact (like magnetism).