Use the graph of sunspot numbers (see Figure 2.12) to Answer the following question.1. Whe...

Use the graph of sunspot numbers (see Figure 2.12) to Answer the following question.

1. When was the most recent solar maximum (month/year)?

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2. When was the most recent solar minimum (month/year)?

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3. On a slow day in the lab, two graduate students made a bet about how many sunspots would occur two months later in spring semester, 2013. Chad estimated there would be 90 sunspots; Julie thought there would be 30. When the month rolled around, 63 sunspots were recorded. Does this mean that Chad and Julie do not understand the sunspot cycle? Explain your reasoning.

Figure 2.12 The current sunspot cycle. A record of sunspots has been kept since the middle of the eighteenth century, with each sunspot cycle numbered since then. The vertical axis on this figure shows the number of sunspots. Some sunspots are grouped so close together that the individual sunspots cannot be easily observed. The “Sunspot number” is the sum of the individual spots observed added to 10 times the number of groups since most groups average 10 spots. The smooth lines on the graph represent the predicted range of sunspot activity; the jagged lines show the actual activity.