cool solar powered science experiment for 6th graders?
These sites have lots of science fair project ideas:
Any suggestions on a science project/machine using solar power?
solar powered emergency distress transmitter
the solar cell charges a battery enclosed in a floating plastic cube, when the ship goes down, the device flips over, a small switch ( mercury switch) automatically turns on a distress transmitter andf small strobe light, the solar cell keeps the device charged for three days till the coast guard gets there
the same ides could be used for skiers maybe