Understanding Energy in Science
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Questions and Answers

What is the main difference between elastic energy and sound energy?

  • Elastic energy exists in the distortion of a material, while sound energy exists in pressure waves through a fluid. (correct)
  • Elastic energy can be stored in potential form, but sound energy cannot.
  • Elastic energy is potential energy, while sound energy is kinetic energy.
  • Elastic energy is found in a mechanical wave, while sound energy is produced by the vibrations and motions of particles.

    • How is heat defined in terms of kinetic energy?

  • Heat is measured as temperature, representing the average kinetic energy of particles. (correct)
  • Heat is the potential energy stored in vibrations of particles.
  • Heat is the energy transferred by systems into macroscopic surroundings.
  • Heat is interchangeable with work due to its potential to transform into motion.

    • Which process exemplifies the interchangeability of work and heat by converting mechanical motion into heat?

  • The rising of particles of air above cooler or denser air.
  • The propagation of waves through an elastic material.
  • The transformation of friction from rubbing sticks together into kinetic energy. (correct)
  • The convection process in hot air balloons.

    • In what way can all forms of energy be transformed into each other according to the passage?

    <p>Through one or more steps of energy transformation.</p> Signup and view all the answers

    What leads to the creation of upward motion in a hot air balloon according to the text?

    <p>Particles of air being heated and rising above cooler or denser air.</p> Signup and view all the answers

    How does convection contribute to creating upward motion in a hot air balloon?

    <p>By moving particles of air that are heated above cooler or denser air.</p> Signup and view all the answers

    Which statement best describes the relationship between heat and work?

    <p>Heat and work are interchangeable forms of energy that can be transformed into each other.</p> Signup and view all the answers

    What kind of energy is stored in a material that distorts but has the potential to return to its original shape?

    <p>Potential energy</p> Signup and view all the answers

    How can work be transformed into heat according to the text?

    <p>By converting friction from rubbing sticks together into kinetic energy in individual particles.</p> Signup and view all the answers

    What happens during all types of energy transformations according to the passage?

    <p>Some energy is lost as wasted thermal energy during the transformation process.</p> Signup and view all the answers

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