Discover Magnetic Forces Attraction, Repulsion, and How Magnets Work

A magnet is a special object that uses an invisible force called magnetism to pull certain metals toward it. You can find magnets on your refrigerator at home, inside toys, and even in compasses. Magnets are a fascinating part of Force Strength the study of how different forces affect objects.

Every magnet has two ends called poles a north pole and a south pole. The magnetic force is strongest at these two poles. The middle of a magnet has very little magnetic force.

When you put two magnets near each other, one of two things will happen: they will either attract or repel each other.

Attraction means two objects are pulled closer together by a force. This happens when the north pole of one magnet faces the south pole of another magnet. Opposite poles always attract each other.

Repulsion means two objects are pushed away from each other by a force. This happens when the same poles face each other north facing north, or south facing south. Like poles always repel each other.

Not every object is attracted to a magnet. Materials like iron, nickel, and steel are called magnetic materials because they are pulled toward a magnet. A steel paper clip, an iron nail, and an iron key are all magnetic.

Materials like plastic, wood, rubber, glass, and aluminum are called non-magnetic materials. A magnet will have no effect on a wooden pencil, a rubber eraser, or a glass cup.

One amazing thing about magnetic force is that it can pass through non-magnetic materials like paper and plastic. You can move a steel coin on top of a table by holding a magnet underneath the table does not block the magnetic force!

You may see different shapes of magnets. A bar magnet is straight, with the north pole at one end and the south pole at the other end. A horseshoe magnet is shaped like the letter U, and its two poles are at the two open curved ends. Both types follow the same rules of attraction and repulsion.

The area around a magnet where its force can attract or repel objects is called the magnetic field. This field is invisible, but you can feel it when you bring a magnetic object close to a magnet. The magnetic force gets weaker the farther away an object is from the magnet.

Magnet: A magnet is an object that pulls certain metals, like iron and steel, toward it using an invisible force called magnetism.

Magnetism: Magnetism is the invisible pushing or pulling force that magnets produce. It is what makes magnets so special they can move objects without even touching them.

Force: A force is a push or a pull that causes objects to move or change direction. Magnetic force is one type of force you will learn about.

Attract / Attraction: When two objects attract each other, they are pulled closer together by a force. When a north pole faces a south pole, the magnets attract each other.

Repel / Repulsion: When two objects repel each other, they are pushed away from each other by a force. When the same poles face each other, the magnets repel each other.

North Pole: The north pole is one of the two ends of a magnet where the magnetic force is the strongest. It is usually marked with the letter N.

South Pole: The south pole is the other end of a magnet where the magnetic force is the strongest. It is usually marked with the letter S.

Magnetic Materials: Magnetic materials are materials that are attracted to magnets. Iron, nickel, steel, and cobalt are examples of magnetic materials.

Non-Magnetic Materials: Non-magnetic materials are materials that are NOT attracted to magnets. Wood, plastic, rubber, glass, and aluminum are examples of non-magnetic materials.

Magnetic Field: The magnetic field is the invisible area around a magnet where its force can attract or repel objects. You cannot see it, but you can feel its effects.

Bar Magnet: A bar magnet is a straight magnet with a north pole at one end and a south pole at the other end.

Horseshoe Magnet: A horseshoe magnet is shaped like the letter U. Its two poles are at the two open curved ends, and the magnetic force is very strong between those ends.

You can test magnetic force by gathering small objects from around your home a paper clip, a coin, a pencil, a rubber band, and a plastic spoon. Hold a magnet near each object and observe what happens. You will discover which objects are magnetic and which are non-magnetic.

You can also try placing a magnet under a thin piece of paper and putting a paper clip on top. Watch how the magnetic force passes right through the paper to move the clip! This connects to what you are learning about Gravitational Forces both are invisible forces that act on objects.

Before learning about magnetic forces, you explored Types of Motion Push, Pull, Speed, and Direction. That topic helped you understand that forces cause objects to move, speed up, slow down, or change direction. Magnetic force is a special kind of push or pull that works without touching.

You also learned about Simple Machines and how they use forces to make work easier. You explored Light Properties, including sources, reflection, and shadows. These topics all connect to the big idea that forces and energy shape the world around you.

Magnetic force is just one of many exciting forces you will explore. You will soon learn about Gravitational Forces and Their Effects on Objects gravity is another invisible force that pulls objects downward toward Earth, just like magnetic force pulls metal objects toward a magnet.

You will also explore Force Strength and the Effects of Different Forces, which will help you understand how the strength of a force changes what happens to an object. This connects directly to how magnetic force gets weaker the farther away a magnet is from an object.

In Motion in Materials Movement Through Air and Water, you will discover how forces act on objects moving through different materials. You will also explore energy topics like Heat Energy, Light Energy, and Sound Energy, which show you that forces and energy are connected in many ways.

After mastering magnetic forces, you will be ready for more advanced topics. You will study Magnetic Forces Fields and Interaction to go deeper into how magnetic fields work. You will also learn about Balanced Forces and Unbalanced Forces, which explain what happens when forces are equal or unequal. Finally, Work and Force Mechanical Advantage will show you how forces are used to do work.