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This effect on the suns photosphere is from large cells or grains which are about 100 km accross. There is hotter rising gas at the centre with falling cooler gas at the edge of these cells, which are constantly shifting every few minutes. These cells or grains are contained within much larger structures called super granules, which are around 30,000 km in size and last for several hours.

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Q: The mottled appearance visible on the surface of the Sun produced by the underlying convection is called?
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Related questions

What evidence can you give that granulation is caused by convection?

Convection is caused by the mottled appearance of the solar photosphere, caused by gases rising from the interior of the Sun.


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How do you use the word mottled in a sentence?

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