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Grade 7
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Energy Forms and Transformations
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Grade Level
Grade 7
7.79 Energy Forms and Transformations
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An electric scooter goes up a hill. The battery level drops, the motor turns, and the scooter gains height. Which transformation chain is best?
A
gravitational potential energy -> electrical energy -> chemical energy -> sound energy
B
chemical energy in battery -> electrical energy -> kinetic energy -> gravitational potential energy
C
thermal energy in hill -> kinetic energy -> stored chemical energy
D
sound energy from motor -> light energy -> gravitational potential energy
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