Magnetic Earth

• Seasons


  Caused by tilt of the axis of the Earth
• Summer


  • Sun is high in the sky at midday
  • Days are longer than the nights
• Winter


  • Sun is low in the sky at midday
  • Nights are longer than the days
• Earth is tilted closer to the Sun


  It is hotter in the summer
• Earth is tilted further away from the Sun


  It is colder in the winter
• Magnet


  A material or object that produces a magnetic field
• Magnets used in


  • Compasses
• Compass


  A magnet that points north and is used to navigate by explorers
• Nowadays ships use satellites and radios instead of compasses
• Bar magnet


  The simplest form of magnets which is rectangular in shape and has a magnetic field around it
• Bar magnet


  • Usually made of elements that have naturally magnetic fields like cobalt
• Magnetic poles


  The two ends of a magnet, called the north pole and the south pole
• Two of the same pole are near each other


  They will repel each other
• Two different poles are near each other

  They will attract each other
• Magnetic field


  The space around a magnet
• Magnetic fields


  • Stronger when the lines are closer together
  • Weaker as you get further from the magnet
• Direction of a magnetic field

  • Always away from the north pole and towards the south pole