Energy Transformation
Flashcard
•
Physics
•
8th Grade
•
Practice Problem
•
Hard
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24 questions
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1.
FLASHCARD QUESTION
Front
What is the best example of a machine that converts electrical energy into kinetic energy and sound energy? Options: an electric toothbrush, a toaster, a flashlight, an iron
Back
an electric toothbrush
2.
FLASHCARD QUESTION
Front
What best describes the energy conversion that occurs when you turn on a hair dryer?
Back
electric to kinetic to thermal and sound
3.
FLASHCARD QUESTION
Front
What best describes the energy conversion that takes place in a microwave oven? Options: electrical to light to thermal, chemical to thermal to light, electrical to thermal to sound, nuclear to thermal to chemical
Back
electrical to light to thermal
4.
FLASHCARD QUESTION
Front
Turning on a lamp is an example of energy transformation from electrical to 3 forms of energy. Which of these is NOT created by the lamp? Options: radiant, light, heat, chemical
Back
chemical
5.
FLASHCARD QUESTION
Front
Which energy transfer occurs when food is digested? Options: chemical to mechanical, radiant to nuclear, mechanical to potential, thermal to chemical
Back
chemical to mechanical
6.
FLASHCARD QUESTION
Front
In energy transformations, "wasted energy" usually takes what form? Options: heat, chemical energy, light, sound waves
Back
heat
7.
FLASHCARD QUESTION
Front
What kind of energy transformation takes place in this system?
Back
chemical to electrical to light
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