magnets

• What should you be able to describe by the end of the video?

  The forces produced when magnets are together
• What is the difference between permanent and induced magnets?

  Permanent magnets produce their own magnetic field
• What are the two ends of a bar magnet called?

  North Pole and South Pole
• Where are magnetic forces strongest on a magnet?

  At the poles of the magnet
• What happens when two like poles of magnets are brought close together?

  They repel each other
• What occurs when unlike poles of magnets are brought together?

  They attract each other
• What type of forces are the attraction and repulsion between magnetic poles?

  Non-contact forces
• What does a permanent magnet produce?

  Its own magnetic field
• What happens when a permanent magnet is brought close to another permanent magnet?

  They can attract or repel each other
• What is an induced magnet?

  An object that becomes a magnet in a magnetic field
• What happens to objects placed in a magnetic field created by a permanent magnet?

  They can become induced magnets
• What is a key fact about induced magnetism?

  It always causes a force of attraction
• What happens to induced magnets when the permanent magnet is removed?

  They lose most or all of their magnetism
• What are the key concepts related to permanent and induced magnets?

  • Permanent magnets produce their own magnetic field
  • Induced magnets become magnets in a magnetic field
  • Induced magnetism causes attraction
  • Induced magnets lose magnetism when removed from the field
• What are the interactions between magnetic poles?

  • Like poles repel each other
  • Unlike poles attract each other
  • Both interactions are non-contact forces
• What is meant by a magnetic field?

  Region around a magnet where force acts
• How can you plot the magnetic field pattern of a magnet?

  Using a compass to trace field lines
• What are the two types of magnets mentioned?

  Permanent and induced magnets
• What is a permanent magnet?

  A magnet that always has a magnetic field
• What is an induced magnet?

  Material that becomes a magnet in a field
• What are the four types of magnetic materials?

  Iron, steel, cobalt, and nickel
• How does the strength of a magnetic field change with distance?

  It decreases as distance from the magnet increases
• Where is the magnetic field strongest?

  At the poles of the magnet
• How can the direction of a magnetic field be found?

  Using a magnetic compass
• What happens when a compass is placed near a bar magnet?

  It helps plot the magnetic field lines
• What does the compass needle indicate when held away from magnets?

  It points in the north-south direction
• What causes the Earth's magnetic field?

  The Earth's core is responsible for it
• What is the relationship between the compass and the Earth's magnetic field?

  The compass needle aligns with Earth's magnetic field
• Where can students find questions on magnetic fields?

  In the vision workbook linked above