magnetic fields

• What is a magnetic field?


  A magnetic field is a region around a magnet where a force acts on another magnet or on a magnetic material.
• What happens when a magnetic material is placed in a magnetic field?


  The magnetic material experiences a force of attraction towards the magnet.
• What are the four types of magnetic materials?


  Iron, steel, cobalt, and nickel.
• What is the difference between a permanent magnet and an induced magnet?


  A permanent magnet always has a magnetic field, while an induced magnet becomes a magnet only when placed in a magnetic field.
• How does the strength of a magnetic field change with distance from the magnet?


  The strength of the magnetic field decreases as the distance from the magnet increases.
• Where is the magnetic field strongest in a magnet?


  The magnetic field is strongest at the poles of the magnet.
• How can the direction of a magnetic field be found?


  The direction of a magnetic field can be found using a magnetic compass.
• What is the process to plot the magnetic field pattern of a magnet using a compass?


  Place the compass near the magnet, mark the North Pole, move the compass, and repeat until the field lines are plotted.
• What does it indicate when the lines of a magnetic field are closer together?


  It indicates that the magnetic field is strongest in that area.
• What does a magnetic compass contain?


  A magnetic compass contains a small bar magnet.
• What does the needle of a compass point to when held away from any magnets?


  The needle always points in the north-south direction.
• What is the reason for the Earth's magnetic field?


  The Earth's magnetic field is due to the Earth's core.
• Where can you find plenty of questions on magnetic fields related to this topic?


  You can find them in the vision workbook linked in the video.