Technology In The Home Flashcards
What are the advantages of technology?
Convenient less labour More time for friends and family Hygienic Better communication Better security Good entertainment
What is technology?
It is a practical use of science in our lives
What are the disadvantages of technology?
Expensive Difficult to handle and clean Disposing machines bad for enviroment Jobs can be better by hand Spelling skills are lost
How do you choose household appliances?
Cost, energy efficiency, quality, safety, needs, specifications, design, guarantee, after-sales service
What are the main types of household appliances?
Appliances with a motor,
Appliances with a heating element
Big appliance with both an element
What are the features of a an electric hob?
Dual rings
Halogen rings
Induction hob
Split level
What are the features of a gas hob?
Surface composition grill, push button ignition, pilot light
What are the functions of halogen rings?
It heats up quickly, easy to control
What is the function dual ring?
Only heats up one ring, uses less energy
What is the function of the induction hob?
It only heats the saucepan doesn’t burn hand
What is the functions split level?
oven is separate to the hob could be in eye level or lower
What is the function of a surface combustion grill?
Small flames over the heating surface to give a larger grilling area
What is the function of a pilot light or push button ignition
To light a gas cooker
What ar the features of an electirc or gas grill
Dual grill
What is the function of a dual grill
Allows one half of the grill to be used for small amounts of food
What are the features of an electric and gas oven?
Glass-panelled external oven door, removeable drop-down door and oven roof, cool touch doors, stay-clean or self-cleaning oven linings
What are the functions of a removable drop-down door or oven roof
For easy cleaning
What are the functions of a cool touch doors
For safety
What is the function of a stay clean or self cleaning oven linings
To keep it clean for longer
What are the features of an electric oven?
Multifunction ovens, auto timer
What is the feature of a multifunction oven
Adjusts to suit different cooking conditions
What is the function of an auto timer
Pre-set to switch itself on and off automatically
What is the feature of a gas oven?
Oven flame-failure device
What is the function of the oven flame failure device?
Safety feature to stop gas flow if burner goes out
What is the function of the thermostat
It keeps the oven at the temperature set on the control dial
Name the three transfers of heat?
Radiation, conduction and radiation
What type of heat transfer does the hob do?
Conduction
What type of heat transfer does the grill do?
Radiation
What type of heat transfer does the oven do?
Convection
List five guidelines used to care for a cooker
Wipe spills. Wipe grill pan ater use Don't drag heavy saucepans on the hob Avoid harsh cleaning agents Special cleaner for ceramic hobs
List four guidelines used for choosing a cooker
Gas or electricity cookers depends on availibilty on fuel
Gas ones heat quick easy to control electric ones are cleaner
Choose a freestanding cooker or a separate oven and hob
For an electroc cooker decide on a ceramic hob, solid plate or coiled ring
What are the three guidelines used to place the cooker
Place cooker near gas or electric connection
Gas cookers should be place away from draughts
Don’t place cook near the fridge or at the end of a line units
What appliance does a refrigerator use
Motor
How does a refrigerator keep food cold
Because of the liquid refrigerant
How does the the liquid refrigerant keep food cool?
It takes heat from food and the air inside the refrigerator
What are the functions of a refrigerator?
Keeps perishable food fresh for longer Reduces wastage of leftover food Less shopping Protects food from flies and dust Reduces risk of food poisoning Stores frozen foods or freezes fresh foods in freezer
What are the features of a refrigerators?
Integrated door panel, adjustable feet, movable plastic coated shelves,
Cold drinks dispenser, split shelves, wine rack, ice dispensers, zoned refrigeration, automatic defrost
What is the function of an intergrated door panel?
To match other kitchen fittings
What is the function of adjustable feet?
To adjust height
Movable plastic coated shelves
To fit large items
Cold drinks dispenser
For convenience
Split shelves
To store taller items
Wine rack
To chill wine bottles horizontally
Ice dispensers
For convenience
Zoned refrigeration
Different parts may have different temperature
Automatic defrost
Prevents build up of ice
Name five guidelines used to use a refrigerator?
Cooker must be away from refrigerator Cover food before refrigerating Wrap strong smelling foods Don't refrigerate fruit, or root vegetables Don't refrigerate hot foods
Name three guidelines that can be used to care a fridge
Defrost regularly
Clean inside with 1tbsp bread soda and 1/2 litre of warm water
Wash, dry and polish the outside
What are the five guidelines used to buy a refrigerator?
Choose one large enough for the family Decide refrigerator or fridge-freezer Ensure there is enough space Consider method of defrosting Note star rating on frozen food compartment
What temperature and how long would the food last with the star
a) . Rating
b) **
c) **
d) **
a) = -6C stores frozen food for a week
b) ** = -12C stores frozen food for a month
c) ** = -18C stores frozen food for three months
c) ** = -18C to -25C stores frozen food for a year
How does the microwave heat food?
It energy waves that are attracted to water and fat molecules, it enters the food and the food molecules vibrate to cause friction that produces heat
What are the uses of the microwave?
Defrosting Cooking Reheating Melting Softening
What are the advantages of a microwave oven?
Quick and convenient
Healthy
Saves washing up
Food keeps its colour
What are the disadvantages of a microwave oven
Bad for big pieces of food
Does not brown food
Can’t tenderise tough cuts of meat
Foods can be over cooked easily
What are the six guidelines used to use a microwave oven?
Follow instructions. Allow standing time
Size, thickness quantity of food influences cooking time
Cover foods
Pierce food with the skin
Arranger food in a circle
Name two guidelines used to buying a microwave ven?
Consider points in pg324
The wattage
What are the features of a microwave oven?
Turntables, dial controls/push button, automatic programming, temperature probe, auto-weight defrost, browning dish, browning element child lock
Standing time
Leave the to stand outside the oven for a few minutes before eating. Food continues to cook in this time
