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You will be using two Internet sites to find the answers to the following questions. One is . This site gives up-to-date information of the Sun’s weather, how that weather affects us on Earth, and much more. The second site is a NASA site. . Here you will find useful detailed information on everything about the sun (from structure to current missions).

Answer the following questions on a separate piece of paper (preferably typed) in complete sentences. These questions are available on my website ( ). You can cut and paste them into your typed document.

  1. What is meant by the solar cycle? Explain what causes the sunspots.
  2. Explain the difference between solar maximum and solar minimum. Is the current year closer to maximum or minimum?
  3. What is the solar wind?
  4. What is the velocity of the solar wind today?
  5. How far in advance can we know if there is going to be a big change in the solar wind?
  6. Explain what a geomagnetic storm is and the significance of it.
  7. What are the categories of geomagnetic storms? What is the probability of each kind of geomagnetic storm over the next 24 and 48 hours in Woodbridge? (Remember which latitude we are in!)
  8. How many sunspots are visible on the sun today?
  9. How is the sunspot number determined?
  10. What are coronal holes?
  11. What are coronal mass ejections (CME’s)?
  12. Explain the difference between a solar flare and a CME.
  13. Describe the three classes of solar flares.
  14. What is a potentially hazardous asteroid (PHA)?
  15. What is an LD?
  16. How many LD’s away did the nearest near-miss asteroid pass by Earth this month?
  17. How far away from Earth in kilometers was the asteroid mentioned in question 15?
  18. What are the four reasons we study the sun?
  19. Why is the coronal heating process a solar mystery? Explain.
  20. Describe the structure of the sun and some features found in each layer.
  21. How are auroras produced? Is it a good time to be observing auroras? Why or why not.
  22. What is the SOHO mission?
  23. Describe one other mission for the sun that is currently taking place.