1) _____________ is the ability to do work or cause a change. a) Energy b) Motion c) Speed 2) _________ is the energy of motion. a) Potential energy b) Heat energy c) Kinetic energy 3) The energy that moves between objects of different temperature is__________ a) Kinetic energy b) Sound energy c) Heat energy 4) Which form of energy is produced when a guitar string vibrates? a) Light energy b) Sound energy c) Chemical energy 5) _________ is the main source of energy in the Earth. a) Stars b) Sun c) Light bulbs

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