1. Sunspot Analysis Cyclic Changes

2. What is a Sunspot?

3. Sunpots: Sunspot: a dark, cooler area on the suface of the sun; a magnetic storm on the surface of the sun First seen by Galileo

5. Vocabulary Cyclic change: a change that repeats Event: a change or series of changes in the earth’s environment Predictable: something that you know will happen based upon past events Maxima: peak number of sunspots in a cycle Minima: lowest number of sunspots in a cycle

7. Natural Event Any change or series of changes in the Earth or its surroundings Example: seasons Can you think of more?

8. Lab Activity Use a pencil Connect dots as you go Finding the average: (#3) Total number of sunspots/time (100y)