Yes. That's why microwaves can boil water.
microwaves vibrate water molecules in food to create heat
No. Water is a transparent liquid. Opaque means you can't see through an object or substance.
Pure water is transparent. Water filled with impurities would be slightly translucent. As of yet, I doubt anyone has seen opaque water.
yes
Microwaves are usually tuned to heat the water in things. We are mostly water and would be cooked.
water molecules.
Microwaves work by oscillating at the same frequency as boiling water. This causes the water molecules to heat up. Needless to say, since your body is about 70% water, microwaves can cause tissue damage by heating up and damaging cells.
This depends upon the particular frequency of the microwaves. Your microwave oven uses microwaves that are tuned to the exact resonance frequency of the water molecule, therefore they are absorbed by water and cause it to get hotter. Other frequencies would tend to pass through water. Similarly, microwaves normally pass through both air and glass, although there are some frequencies that would be absorbed by glass. Air is transparent to all frequencies of microwaves.
Microwaves align polar molecules such as water with the microwaves. This rotation generates energy, which dissipates as heat. So you would be cooked as if you were in a microwave oven.
this is the scientifc term: opaque
Water Molecules in the food