Question : Gliders depend on the following energy for their flight:
Option 1: wind energy
Option 2: electrical energy
Option 3: heat energy
Option 4: chemical energy
Correct Answer: wind energy
Solution : The correct answer is wind energy .
The gliders, or engineless aircraft, are entirely propelled by wind power. The airflow around a plane's wings may be changed by the pilot manipulating certain surfaces on the wing, which affects the lift and altitude of the aircraft.
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