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6th grade ch. 1 sec. 3 magnetic earth
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6th grade ch. 1 sec. 3 magnetic earth

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  • 1. Ch. 1 Sec. 3 Magnetic Earth
  • 2. compass device that has a magnetized needle that can spin freely
  • 3. Just like a bar magnet, Earth has a magnetic field surrounding it and 2 magnetic poles.
  • 4. Circulation of molten material in Earth’s core causes Earth’s magnetism
  • 5. Earth’s magnetic field 2:04
  • 6. in northern Canada- about 1,250 km from geographic North Pole magnetic North Pole
  • 7. magnetic declination angle between geographic north and the north to which a compass needle points
  • 8. Earth produces strong magnetic field  can make magnets from ferromagnetic materials
  • 9. Van Allen belts 2 doughnut shaped regions located 1,000 - 25,000 km above Earth’s surface contain electrons & protons traveling at very high speeds
  • 10. solar wind stream of electrically charged particles flowing at high speeds from the sun
  • 11. The Solar Wind [00:38]
  • 12. magnetosphere region of Earth’s magnetic field shaped by the solar wind
  • 13. glowing region caused by charged particles from Sun aurora
  • 14. northern hemisphere= Northern Lights (aurora borealis) southern hemisphere= Southern Lights (aurora australis)
  • 15. The Northern Lights: Aurora Borealis [01:59]
  • 16. Review Time
  • 17. magnetosphere region of Earth’s magnetic field shaped by the solar wind
  • 18. magnetic declination angle between geographic north and the north to which a compass needle points
  • 19. How are Earth and a bar magnet similar? Both have a magnetic field surrounding it and two magnetic poles.
  • 20. glowing region caused by charged particles from Sun aurora
  • 21. Van Allen belts 2 doughnut shaped regions located 1,000 - 25,000 km above Earth’s surface contain electrons & protons traveling at very high speeds
  • 22. compass device that has a magnetized needle that can spin freely
  • 23. northern hemisphere= Northern Lights aurora borealis