The Sun

2. small, flamelike projection in the chromosphere of the sun
4. a violent eruption on the sun's surface
5. relatively dark spots on the sun that contain intense magnetic fields
8. the antiparticle to the electron
9. the study of the interior of the sun by the analysis of its mode of vibration
10. a telescope designed to photograph the inner corona of the sun
11. an image (usually of the sun) taken in the light of a specific region of the spectrum
12. bright gases just above the photosphere of the sun
13. orientation and strength of a magnetic field's manifestation as north and south poles
15. the fine structure visible on the solar surface caused by rising currents of hot gas and sinking currents of cool gas below
16. faint outer atmosphere of the sun; composed of very hot ionized gas
18. a prominence seen silhouetted against the solar surface

1. one of the four forces of nature; the weak force is responsible for some forms of radioactive decay.
2. wind rapidly moving atoms and ions that escape from the solar corona and blow outward through the solar system
3. a neutral, massless atomic particle that travels at or nearly the speed of light
6. the bright visible surface of the sun
7. a series of three nuclear reactions that build a helium atom by adding together protons; the main energy source in the sun
13. eruption on the solar surface that is anchored in the photosphere due to magnetic fields
14. circulation in a fluid driven by heat; ; hot material rises and cool material sinks
17. the edge of the apparent disk of a body