1) Playing an instrument. a) Mechanical  b) Thermal c) Sound d) Electrical e) Light 2) Using a flashlight. a) Mechanical b) Thermal c) Sound d) Electrical e) Light 3) Must be used in a circuit. a) Mechanical b) Thermal c) Sound d) Electrical e) Light 4) A heater. a) Mechanical b) Thermal c) Sound d) Electrical e) Light 5) Using a hammer. a) Mechanical b) Thermal c) Sound d) Electrical e) Light 6) Fire alarm. a) Mechanical b) Thermal c) Sound d) Electrical e) Light 7) Using a microphone. a) Mechanical b) Thermal c) Sound d) Electrical e) Light 8) Swinging a golf club. a) Mechanical b) Thermal c) Sound d) Electrical e) Light 9) Charging an ipad. a) Mechanical b) Thermal c) Sound d) Electrical e) Light 10) The light is able to turn on. a) Mechanical b) Thermal c) Sound d) Electrical e) Light

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