THE SUNSPOT CYCLE
Name:
Listed below are the annual sunspot data for the last 125 years. Your group of 5 will
plot out the five columns and then attach them together to make a complete graph.
Once the graph is assembled, find the solar maxima, label them on the graph and
record them below. Then calculate the average number of years between solar
maxima. That is the averge length of the solar cycle.
Year
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
#
54
60
65
64
18
25
13
7
6
7
36
73
85
78
64
42
26
27
12
10
3
5
24
42
64
Year
#
1906 65
1907 62
1908 49
1909 44
1910 19
1911
6
1912
4
1913
1
1914 10
1915 47
1916 57
1917 104
1918 81
1919 64
1920 38
1921 26
1922 14
1923
6
1924 17
1925 44
1926 64
1927 69
1928 78
1929 65
1930 36
Year
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
#
21
11
6
9
36
80
114
110
89
68
48
31
16
10
33
93
152
136
135
84
69
32
14
4
38
Year
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
#
142
190
185
159
112
54
35
28
10
15
47
91
107
106
102
68
68
33
33
17
13
30
93
153
155
Year
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
#
140
116
67
46
18
13
29
100
158
142
146
95
55
30
18
9
22
64
93
120
111
104
64
40
30
Years of sunspot maxima:
_____ _____ _____ _____ _____ _____ _____ _____ _____ _____ _____ ____
Average number of years between solar maxima (one decimal): _____________
Modified from an activity by Glenn Chaple