INTRODUCTION TO FOOD TECHNOLOGY
FOOD SCIENCE VS FOOD TECHNOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Heating a marshmallow over a fire is where heat is transferred by means of
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Infrared Radiation
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Conduction
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Convection
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Microwaves
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Explanation:
Detailed explanation-1: -Heat can be transferred by infrared radiation. Unlike conduction and convection-which need the vibration or movement of particles-infrared radiation is a type of electromagnetic radiation. When infrared radiation is absorbed by an object it is heated and its temperature rises.
Detailed explanation-2: -When heating a marshmallow in a microwave, some moisture inside the marshmallow evaporates, adding gas to the bubbles. In addition, a warmer gas pushes outward with more force. Both adding gas and heating cause the gas bubbles to expand, thereby causing the marshmallow to puff up.
There is 1 question to complete.