Study:

Homework

Quiz

Vocabulary

I. Sun

- know sections of the sun and their properties

1- atmosphere-photosphere, chromosphere and cornoa

ex. Photosphere-light emitted

chromosphere-visible during eclipse

2- Interior- process of fusion and parts of sun

-Solar activity

1- Solar Wind-definition and formation

2- Sunspots- definition and how they are created. 11.2 year cycle, when magnetic field accounted for 22.4 years

3- Solar Flares-definition and formation

4- Prominence- definition and formation

-Spectrum-

1- know the different types-continuous, absorption and

emission.

2- know the solar spectrum and characteristics-spectral lines-absorption-elements

II. Stars

- constellations- 88 total, circumpolar

- Clusters-gravitationally bound

- Binaries- definition

- Position-parallax- accurate to 500 pc

- Basic properties- diameter, temperature, mass, brightness, energy output and composition

- 75% hydrogen, 25% helium and 2% other

- Know magnitude, apparent magnitude, absolute magnitude

And luminosity-definition and figure 30-14

- mass-determines the luminosity, temperature and diameter

- Classification- know spectral types

- H-R Diagram- figure 30-17 page 819-main sequence and sun location

III. Stellar Evolution

- Fusion process: difference from fission, where it takes place in stars.

- Know all vocabulary in this section

- Sun-will evolve into a “red giant”