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CLIP 9802

What causes sunspots?

What causes sunspots?
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Key Info
  • What causes sunspots?
  • Duration: 02:06
  • Spectrographic observations explain that sunspots are caused by anomalies in the Sun's magnetic field. Early spectrographic techniques are described that allowed astronomers to deduce the cause of sunspots. All of the surface variations of the Sun are caused by magnetism. Published as part of the Solar System website bbc.co.uk/solarsystem/ Please note this clip is only available in Flash.
  • Subject:

    Science

       Topic:

    Phys: Solar System

  • Keywords: sun, spectrography, spectrograph, magnetism, outerspace
Ideas for use in class
  • To describe how astronomers observe the Sun at different wavelengths.
Background details
  • Clip language : English
  • Aspect ratio : 16x9

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