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Magnetic Forces Basics

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Questions and Answers

The attractive force between two magnets increases. Which statement explains why this would happen?

The like poles of the magnets are pointed at each other and move farther apart.

The unlike poles of the magnets are pointed at each other and move closer together. (correct)

The unlike poles of the magnets are pointed at each other and move farther apart.

The like poles of the magnets are pointed at each other and move closer together.

Which of these determines whether or not a material is magnetic?

The alignment of atoms in the material (correct)

The weight of the material on Earth

The number of elements that make up the material

The density of the material

Candice claims that all magnets have two magnetic poles. Which of these observations would best support her claim?

The strength of the magnetic force from a bar magnet decreases as the magnet is pulled away from another object.

The north pole of a compass needle is attracted to the south pole of a bar magnet.

Iron is attracted to a magnet but not to other pieces of iron.

When a bar magnet is cut in half, each half has a north pole and a south pole. (correct)

Angela tries to pick up a copper penny using a bar magnet, but the penny does not move. Next, she tries to pick up an iron nail using the bar magnet, and the nail lifts up toward the magnet. Which of the following best describes a ferromagnetic material like iron?

<p>Ferromagnetic materials have magnetic domains that align with a magnetic field.</p> Signup and view all the answers

A magician wants to use magnets to create a new illusion for her show. She plans to hide strong magnets in her shoes and inside a special rug on the stage. When she tests the illusion, she finds that her shoes stick to the rug. Why can some objects be magnetized by rubbing one pole of an existing magnet in one direction along the object?

<p>The motion of the existing magnet against the object aligns the magnetic domains.</p> Signup and view all the answers

Study Notes

Magnetic Forces

The attractive force between two magnets increases when the unlike poles of the magnets are pointed at each other and move closer together.
The alignment of atoms in a material determines whether or not it is magnetic.
All magnets have two magnetic poles: a north pole and a south pole.
Iron is a ferromagnetic material. Ferromagnetic materials have magnetic domains that align with a magnetic field.
Some objects can be magnetized by rubbing one pole of an existing magnet in one direction along the object. This aligns the magnetic domains in the object, creating a magnetic field.

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Description

Explore the fundamental concepts of magnetic forces in this quiz. Learn about the nature of magnets, the role of magnetic poles, and how ferromagnetic materials interact with magnetic fields. Test your understanding of magnetism and its practical applications.