Which energy transformation does the blender demonstrate when making a morning smoothie?

• A. Electrical → light
• B. Chemical → mechanical
• C. Mechanical → chemical
• D. Electrical → mechanical

Answer: (D)

When you turn on a blender, electrical energy from the outlet powers a motor. The motor converts that electrical energy into rotational kinetic energy of the blades—mechanical energy. That spinning motion does the work of chopping and mixing the ingredients, transforming their solids into a smoothie. Some energy is lost as heat and sound due to inefficiency, but the primary energy flow is electrical energy becoming mechanical energy.

Light emission isn’t involved, so electrical→light isn’t a fit. If you were using a device powered by chemical energy (like a battery) to move parts, you could have chemical→mechanical, but a typical blender uses electricity, not a chemical source. Mechanical→chemical would mean motion causing chemical changes, which isn’t the main energy transformation here.