solar cycle

4. What is used as a indicator of their streght?
6. How was a peolonged period of low solar activity called?
7. High solar activity can lead to ______.
9. What other period did it coincide with?
10. It was first observed by _____ Heinrich Schwabe.
11. It is primarily driven by the Sun's _____ field.
12. Scientists use sunspot observationss, historical data and _______ to predict future solar cycles.

1. What increases during solar maximum appart from Auroras?
2. How long is the solar cycle?
3. What flips at the end of each solar cycle?
5. What is another name for it?
8. Scientists use _____ ______, ice cores, and cosmic ray data to study past solar cycles.