Question 1
Microwaves are high-frequency electromagnetic waves of radiant energy with wave lengths generally being measured in
◦ meters.
◦ microns.
◦ kilometers.
◦ centimeters.
Question 2
Microwaves may be used for the tempering of frozen foods. In this process the frozen food is
◦ heated to 60-80°C to destroy pathogenic bacteria.
◦ held at a temperature just below the freezing point of water.
◦ placed on a heat susceptor in order to intensify localized heating.
◦ heated sufficiently to destroy essentially all microorganisms present.