1. What is helioseismology?
2. Name the parts of the solar atmosphere.
3. Name the parts of the solar interior.
4. Why is it strange that the corona is hotter than the photosphere?
5. What is the process that releases the Sun's energy?
6. How long does it take a photon to travel from the core to the surface of the Sun.
7. What new element was discovered by spectroscopic studies of the Sun?