Technology In The Home Flashcards
Name the features of a cooker
A hob
A grill
An oven
What can cookers be fuelled by?
Cookers can be fuelled by gas, electricity or by a solid fuel
Name the features of a hob
Dual rings,split level cookers,halogen rings and an induction hob
Name the features of a grill
A dual grill
Name the features of an oven
Glass-panelled external door
Self-cleaning linings
Removable drop-down door
Cool touch doors
Name the features that are specific to electric ovens
Multifunction ovens and an auto timer
Name the features specific to a gas oven
An oven flame-failure device
What does a thermostat do in the oven ?
A thermostat keeps the oven at the temperature set on the control dial.
What are the methods of heat transfer in a cooker??
Conduction
Convection
Radiation
What is conduction?(eg)
Heat transferred along a solid object
Eg-Hob/pan on a hob
What is convection??
Eg
Air(or liquid) is heated and rises from the heat source and cool air (or liquid) replaces it.
Eg-an oven
What is radiation
Eg
Heat rays travel in straight lines and heat the first object they hit
Eg-A grill
MICROWAVE OVENS
.
What are microwaves?
Microwaves are waves that are attracted to water and fat molecules in food.
~~~~~~~~~~~~~~~
They enter the food and make the food molecules vibrate,causing friction.
~~~~~~~~~~~~~~~
This friction produces heat in the food.
~~~~~~~~~~~~~~~
Name the uses of microwave ovens
Defrosts frozen foods -------------- Cooking food quickly -------------- Melting chocolate -------–------ Reheating foods -------------- Softening jam,jelly and butter
Name the Cook ware suitable for use in a microwave
Glass ------ Paper ------- Plastic ------- China
Name the foods that are UNsuitable for use in a microwave oven
Metal containers ---------- Metal-trimmed dishes --------- Tin foil ------- Foil-lined covers
Why?
They can produce sparks in the oven and can damage it.
Name the advantages of having a microwave oven
Quick and convenient ------ Healthy(little loss of nutrients) ------ Saves washing up ------- Food keeps its colour (vegetables) -------
Name the disadvantages of having a microwave oven
Unsuitable for large quantities of food -- Doesn't brown foods --- Doesn't tenderise tough cuts of meat ---- Foods are overcooked or burnt easily -----
Name the guidelines that should be taken when using a microwave oven
The size,thickness and amount of food influence the cooking time
——
Cover foods to prevent drying out or soiling the interior of the oven
——-
Pierce foods with a skin,such as potatoes, to prevent bursting
——–
Arrange foods in a circle to ensure even cooking
———
Name the points that should be considered when buying a household appliance
The higher the wattage,the more powerful and faster it cooks
——
Ovens may have a push-button and or dial controls.
——–
Name the special features of a microwave
Explain
Automatic programming Can program favourite foods in settings --------- Temperature probe To calculate cooking time ---------- Auto-weight defrost Calculates power and time for defrosting --------- A browning dish Browns foods that are normally grilled or fried --------- A child lock
