What can the application of heat change in foods

• Appearance

• Taste

• Texture

• Hardness

Heat can kill…

• Unwanted bacteria

• Molecules

• Particles

• Cells

Conduction is…

• The exchange of heat by direct contact

• The direct contact of the food

• The heat produced by the direct contact between the metal

The heat is conducted through the heat source (Conduction) to the container

• True

• False

First the cooker heats

• The cooker

• The container

• The hob

• The cooking medium

Heat transfer can come in 3 different forms. List them.

• Conduction, convection and heat

• Medium, food and container

• Conduction, convection and radiation

• Radiation, electrostatic and thermal

Convection is…

• The process of cooking

• Hot air and liquid transfer the heat to the food

• When a solid transfers it’s heat by going close to it from a fuel source

When gases is heated it will..

• Rise because of a expanded volume

• Sink because of a expanded volume

• Stay in the middle because the expansion isn’t big enough

• Nothing

What happens when heated gases are moving around?

• Square convection occurs

• Circular conduction occurs

• Circular convection occurs

• They have more energy so they move around more

Food can be cooked using this method because of the…

• Heat

• Heat wave currents

• Currents produced by the meat

• heat waves