Revise GCSE Physics


Question:How would you summarise the properties of infrared and microwaves that are important to cooking?

Properties of infrared radiation:

IR heats the surface of the food

IR is reflected by shiny surfaces

Properties of microwaves:

Microwaves penetrate (about 1cm) into food

Microwaves are reflected by shiny metal surfaces

Microwaves can cause burns when absorbed by body tissue

Microwaves pass through glass and plastics