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Unit 12: Alternative Energy Page 10 of 31
by a fast-moving particle. It
takes energy to split a water
molecule (electrolysis).
When you combine oxygen
and hydrogen atoms
together, it makes water and
a puff of energy. (That’s
what a fuel cell does.)
BEAM robots use solar cells
to store energy from the sun
into capacitors (think
electricity storage tanks)
until the tanks are full (which
is when the robot starts to
move). Instead of having
complicated brains, they rely
on nervous-system type of
sensors to interact with their
world.
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