Microwave Oven – Leaving Certificate Home Economics

Leaving CertificateHome Economics

Absorption – When the reflected microwaves which have been transmitted through the cooking container are absorbed into the food. This friction causes the molecules to vibrate which cause the food to be heated by conduction. The food heats from the inside out.

Combination Microwave – A microwave which has a grilling element built into it and can be programmed to act as an oven, grill or microwave. It is expensive but can cause food to brown if required.

Magnetron – An essential part of a microwave oven. It converts electricity into electromagnetic waves (microwaves).

Microwave – A metal lined steel box with a glass door. It can be used for reheating, melting foods and defrosting foods.

Reflection – When the microwaves are reflected off the metal lining inside the microwave oven.

Temperature Probes – A modern feature of a microwave. Metal probes which are attached to the microwave and inserted into the food. They read internal food temperature to reduce risk of food poisoning

Transformer – An essential part of the micro-wave oven. It increases the voltage from 220V to a higher intensity which is then passed into the magnetron.

Transmitted – When the reflected microwaves are passed through suitable containers inside the microwave oven to reach the food e.g. glass bowl.

Turntable – A part of the microwave oven. It is usually made from glass and rests on a spindle which rotates when powered ensuring even cooking of the food.

Wave Guide – A metal lined pathway which guides the microwaves from the magnetron into the wave stirrer which distributes the waves evenly around the microwave oven.

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