Microwaves are sent through a material causing the molecules in the material to twist and vibrate, causing the material to heat up. What is this twisting and vibration of the molecules creating heat an example of? A. a microscopic change creating a microscopic output
B. a macroscopic change creating a macroscopic output
C. a microscopic change creating a macroscopic output
D. a macroscopic change creating a microscopic output

C.a microscopic change creating a macroscopic output

Explanation:

When food is subjected to microwaves generation of polar molecules takes place in order to align themselves with the magnetic field. An oscillating field causes the molecules to keep changing their orientation. As the field keeps changing direction alternating the molecules move around cause collisions and rub against each other. This causes heat generation.

The moving of the molecules is a microscopic change which we cannot see with our bare eyes. The movement of the molecules causes the heat generation which is a macroscopic change.

So, the answer is C.a microscopic change creating a macroscopic output.

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

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