Question

destiny is riding her bicycle along a sidewalk. what is a type of energy transformation that occurs? *hint: think about how she is making the bike move. she is using her muscles.
a) thermal to elastic
b) kinetic to thermal
c) elastic to chemical
d) chemical to kinetic

Explanation:

When Destiny rides her bicycle, her muscles (which use chemical energy from food) work to move the bike. Chemical energy is transformed into kinetic energy (the energy of motion). Thermal energy is a by - product (muscles get warm), but the main transformation related to making the bike move is chemical to kinetic.

• Option A: Thermal to elastic is incorrect as there is no significant elastic energy involved in the main movement process.
• Option B: Kinetic to thermal is the reverse of the main transformation (thermal is a secondary effect here).
• Option C: Elastic to chemical is not relevant as there is no elastic energy being converted to chemical energy in this context.
• Option D: Chemical to kinetic is correct as the chemical energy in her muscles is used to create the motion (kinetic energy) of the bike.

Answer:

D. chemical to kinetic