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A group of students was standing in the hallway between classes watching a video on a cell phone. After it was over, they started to discuss what types of energy made it possible to hear and see. Read below to see their conversation.
Elijah: I think the electrical energy in the phone turns into heat energy and the heat energy turns into light energy. This is what lets us see the video.
Zara: I think the electrical energy in the phone turns into sound and light energy. That is what lets us see and hear the video.
Alyssa: I think the battery has nuclear energy that turns into electrical energy. Then the electrical energy turns into light and sound energy so we can hear the video while we watch it.
Deandre: I think the light energy in the phone turns into sound energy and then into electrical energy. This is why we can watch videos.
Gabe: I think the battery has chemical energy that turns into electrical energy inside the phone. Then the electrical energy turns into both sound and light energy allowing us to see and hear the video.
which student has the most correct answer please explain why.
Zara is correct because the phone battery is electrical, and the electricity uses the phone speakers to make sound energy, and the light behind the screen to flash, making light energy.
Explanation: Gabe was close, but the phone does not have chemical energy
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