Multiple choice

When heating up holiday leftovers in the microwave, what type of energy transformation occurs?

  1. thermal energy into electrical energy

  2. electromagnetic radiation into thermal energy

  3. electrical energy into electromagnetic radiation

  4. chemical energy into thermal energy
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Microwaves use electromagnetic radiation (microwaves) to excite water molecules in food, which increases their kinetic energy and manifests as thermal energy (heat).

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