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Power of the Sun

Power of the Sun. Nuclear fusion—the Sun takes the nucleus of hydrogen atoms and joins them together in steps to form helium nuclei. Nuclear fission is used on Earth in power plants. This breaks elements like uranium apart. Nuclear fusion is much more efficient. Solar fusion.

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Power of the Sun

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  1. Power of the Sun • Nuclear fusion—the Sun takes the nucleus of hydrogen atoms and joins them together in steps to form helium nuclei. • Nuclear fission is used on Earth in power plants. This breaks elements like uranium apart. • Nuclear fusion is much more efficient.

  2. Solar fusion

  3. Layers of the Sun

  4. Layers of the Sun • Core—is where fusion takes place. • Radiative zone—is where energy moves out from core. • Convective zone—energy from radiative zone heats material causing it to rise. Heat is transferred causing gas to sink. • Photosphere—outer layer that emits light.

  5. Layers of the Sun • Chromosphere—outermost layer of Sun’s surface that gives the color. • Corona—superheated gases surrounding Sun that is only seen during eclipses.

  6. Activity of the Sun • Sun rotates in about 25 days. • Sunspots are areas of the Sun that appear darker. Gases sink here. • Sunspots occur in phases of many and few. There are 11 years between cycles. • We are in an active phase now.

  7. Activity of the Sun • Prominences—looping curves of stellar material caused by magnetic fields. • Solar flares—violent outbursts of energy from Sun. Can interrupt cell phones and satellites. • Coronal mass ejections—huge amounts of materials thrown from the corona. • Solar wind– a stream of charged particles from Sun.

  8. Activity of the Sun

  9. Sun in different frequencies Infrared X ray Ultraviolet Visible

  10. Assignment • Sketch a large diagram of the Sun showing every layer (with a description), sunspots, solar flares, prominence, coronal mass ejection. • Must cover the entire sheet of paper provided.

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