What energy transformation occurs when a stretched elastic band is released?

Get ready for the NCEA Level 1 Energy Test. Utilize flashcards and multiple choice questions with clear explanations and hints. Prepare for success!

Multiple Choice

What energy transformation occurs when a stretched elastic band is released?

When you stretch an elastic band, energy is stored as elastic potential energy. When you release it, that stored energy mainly turns into kinetic energy—the band and any attached object move. In a real band, some of that energy doesn’t go into motion at all; it’s lost as sound and heat due to internal friction and air resistance. So the best description is: elastic potential energy becomes kinetic energy, with some energy lost as sound or heat. The other ideas don’t fit because energy isn’t transferred backward into the stored elastic form, and heat alone can’t account for the motion you observe, nor does energy spontaneously go from heat into motion in this scenario.

When you stretch an elastic band, energy is stored as elastic potential energy. When you release it, that stored energy mainly turns into kinetic energy—the band and any attached object move. In a real band, some of that energy doesn’t go into motion at all; it’s lost as sound and heat due to internal friction and air resistance. So the best description is: elastic potential energy becomes kinetic energy, with some energy lost as sound or heat. The other ideas don’t fit because energy isn’t transferred backward into the stored elastic form, and heat alone can’t account for the motion you observe, nor does energy spontaneously go from heat into motion in this scenario.

More practice questions