Answer:
(i)
(a) Solar energy into heat: Solar cooker.
(b)
Solar energy into electricity: Solar cell.
(ii) The
wind rotates the blades of the windmill. This, in turn, rotates the connecting
rod (shaft) and the crank (u-bend) moves up and down. Since the pump rod is
connected to the crank, the pump rod of the water pump also moves up and down
and lifts the water from the well or flooded mine. Thus, the rotational
movement of the blades of the windmill is used to drive a large number of
machines.
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