Enhancement Lesson

1. 16.2e The Sun and Stars Enhancement Lesson

2. 16.2 Vocabulary Constellation – a group of stars appearing in a pattern as seen from earth.

3. 16.2 Vocabulary Red Giant – a large, reddish star late in its life cycle that fuses helium into carbon or oxygen.

4. 16.2 Vocabulary Supergiant – an extremely large star that creates elements as heavy as iron.

5. 16.2 Vocabulary Supernova – a powerful explosion that occurs when a massive star dies.

6. 16.2 Vocabulary White Dwarf – A small, very dense star that remains after fusion in a red giant stops.

7. 16.2 Vocabulary Neutron Star – a dead star with the density of atomic nuclei.

8. 16.2 Vocabulary Black Hole – an object so massive and dense that not even light can escape its gravity.

9. 16.2 What is a star Coronal streamer-A wisp-like stream of particles that gradually moves away from the Sun and becomes part of the solar wind.

10. 16.2 What is a star Coronal holes - are areas of the Sun's surface that are the source of open magnetic field lines that head way out into space.

11. 16.2 What is a star Photosphere - imaginary surface from which the solar light that we see appears to be emitted.

12. 16.2 What is a star Sunspot – temporary phenomena on the photosphere caused by magnetic activity which inhibits convection forming areas of reduced temperature.

13. 16.2 What is a star Chromosphere – An incandescent, transparent layer of gas, primarily hydrogen, several thousand miles in depth, lying above and surrounding the photosphere of a star, such as the sun, but distinctly separate from the corona.

14. 16.2 What is a star Filament – are formed in magnetic loops that hold relatively cool, dense gas suspended above the surface of the Sun.

15. 16.2 What is a star Corona hole – areas where the Sun's corona is darker, colder, and has lower-density plasma than average.

16. 16.2 What is a star Convective Zone – the range of radii in which energy is transported primarily by convection.

17. 16.2 What is a star Radiative Zone – In the radiation zone, energy is transported by radiation.

18. 16.2 What is a star Core – The core is the source of all the Sun's energy. The Sun's core has a very high temperature, more than 15 million degrees Kelvin, and the material in the core is very tightly packed or dense

19. Birth and Death of a Star Fusion Ignition Main Sequence Protostar Red & Supergiants Black Hole White Dwarf