Across
- 6. A region of space that has so much mass concentrated in it that there is no way for a nearby object to escape its gravitational pull
- 9. The layer of the solar atmosphere that is located above the photosphere and beneath the transition region and the corona.
- 10. A temporary disturbed area in the solar photosphere that appears dark because it is cooler than the surrounding areas.
- 11. The region around a planet such as the Earth within which the motion of charged particles is influenced by the planet's magnetic field
- 12. A star ending its life in a huge explosion.
- 13. A stream of charged particles flowing outward from the Sun's corona.
- 15. The highest energy (shortest wavelength) photons
- 16. A colorful, rapidly varying glow in the sky caused by the collision of charged particles in the magnetosphere with atoms in the Earth's upper atmosphere.
Down
- 1. The visible surface of the Sun
- 2. A layer in a star in which convection currents are the main mechanism by which energy is transported outward. In the Sun, a convection zone extends from just below the photosphere to about seventy percent of the solar radius.
- 3. Radiation that travels through vacuous space at the speed of light and propagates by the interplay of oscillating electric and magnetic fields.
- 4. a gas heated to sufficiently high temperatures that the atoms ionize.
- 5. The outermost layer of the solar atmosphere. The corona consists of a highly rarefied gas with a low density and a temperature greater than one million degrees Kelvin. It is visible to the naked eye during a solar eclipse.
- 7. A discrete quantity of electromagnetic energy.
- 8. A neutron star (burnt-out star) that emits radio waves which pulse on and off.
- 12. Rapid release of energy from a localized region on the Sun in the form of electromagnetic radiation, energetic particles, and mass motions.
- 14. A faint blue, star-like object commonly considered to be extremely distant, probably an unusual nucleus of a galaxy. It has a tendency to flare.