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GCSE Food Preparation and Nutrition · key term
The transfer of energy by electromagnetic waves. A hot grill emits infrared radiation that food absorbs.
Used by AQA
Specification 3.3.1.1 · Paper 1
Revise: Reasons for Cooking and Heat TransferA hot grill element emits infrared radiation. This travels to the food without requiring direct contact between the element and the food. The food absorbs the radiation and its surface heats up.
For grilling, explain that radiation travels from the heat source to the food and is absorbed at its surface.
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