EMF – Investigation 2
Focus Questions
2-1 What happens when magnets interact?
2-2 How can we detect a magnetic field?
2-3 What factors affect the force of attraction between magnets?
Vocabulary
attract compass gravitational force induced magnetism
magnet magnetic field magnetism permanent magnet pole
potential energy repel temporary magnet
Concepts
• Magnets stick to (attract) objects that contain iron.
• All magnets have two poles, a north pole on one side, and a south pole on the other side.
• Like poles repel each other, while opposite poles attract each other.
• Magnets are surrounded by an invisible magnetic force field, which acts through space and through all nonmagnetic materials.
• Magnetic materials may become temporary magnets when they interact with magnetic fields.
• The magnitude of the magnetic force between two interacting magnetic fields decreases as the distance between them increases.