Add to ORKGIn this activity students analyze and compare two graphs to determine if there is a correlation between solar activity and ocean temperature. They discover that by comparing the results from data that has been collected since the 1800's to the present, scientists have found a possible pattern. For example, there are many instances when the average ocean surface temperature and sunspot activity were at a high or low at about the same time. The source of the controversy is that there are also times in which a correlation is not seen in the data. Educational levels: High school, Middle school