Sample results from one experiment

Time (minutes) Temperature (Celsius)
0        15
.5       15
1.0     22
1.5     35
2.0     55
2.5     70
3.0     75
3.5     81
4.0     84

Weight of rocks = 4.3 kg
In this experiment all the rocks were smooth and spherical.
John Jamieson
Cindy Goodyear

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