6th Grade-Ch. 1 Sec. 3 Magnetic Earth
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Transcript of 6th Grade-Ch. 1 Sec. 3 Magnetic Earth
Ch. 1 Sec. 3Magnetic Earth
compass•device that has a magnetized needle that can spin freely
Just like a bar magnet, Earth has a magnetic field surrounding it and 2 magnetic poles.
Circulation of molten material in Earth’s core causes Earth’s magnetism
Earth’s magnetic field 2:04
• in northern Canada- about 1,250 km from geographic North Pole
magnetic North Pole
magnetic declination• angle between geographic north
and the north to which a compass needle points
Earth produces strong magnetic field can make magnets from
ferromagnetic materials
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
solar wind
• stream of electrically charged particles flowing at high speeds from the sun
The Solar Wind [00:38]
magnetosphere
• region of Earth’s magnetic field shaped by the solar wind
• glowing region caused glowing region caused by charged particles by charged particles from Sunfrom Sun
auroraaurora
• northern hemisphere= northern hemisphere= Northern Lights Northern Lights (aurora (aurora
borealis)borealis)• southern hemisphere= southern hemisphere= Southern Lights (aurora Southern Lights (aurora
australis)australis)
The Northern Lights: Aurora Borealis [01:59]
magnetosphere
• region of Earth’s magnetic field shaped by the solar wind
magnetic declination• angle between geographic north
and the north to which a compass needle points
How are Earth and a bar magnet similar?
• Both have a magnetic field surrounding it and two magnetic poles.
• glowing region caused glowing region caused by charged particles by charged particles from Sunfrom Sun
auroraaurora
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
compass•device that has a magnetized needle that can spin freely
• northern hemisphere= northern hemisphere= Northern Lights Northern Lights
aurora borealisaurora borealis