household technology

Question 1

factors to consider when choosing appliances - information

Answer 1

source information about appliance e.g. brands and model available, or features included e.g. auto defrost before buying to ensure to needs specific needs

Question 2

factors to consider when choosing appliances - cleaning

Answer 2

ensure appliances are easy to clean in order to reduce the time and effort required to maintain them

Question 3

factors to consider when choosing appliances - design

Answer 3

consider appliance that have a design that will coordinate with the existing decor of the home, check the measurements of the space available in the home to ensure the appliance will fit

Question 4

thermostat

Answer 4

controls the internal temperature once set, it maintains the temperature between 3-4*C

Question 5

refrigerant

Answer 5

cooling the cabinet by drawing the heat from inside

Question 6

working principles - compressor

Answer 6

-found at the base of the refrigerator
-contains the gas refrigerant isobutane
-a motor pump connected to the compressor forces the gas refrigerant into the condenser above

Question 7

working principles - condenser

Answer 7

-cools the gas refrigerant and condenses it into a liquid
-it is then sent to the evaporator above
-the cooling finds at the back fo the refrigerator radiate or realise heat generated during the process, keeping the condenser cool

Question 8

working principles - evaporator

Answer 8

-found at the top of the refrigerator, rapidly evaporates the liquid refrigerant into a gas by drawing heat from the fridge cabinet
-this cools the internal temperature of the refrigerator cabinet to 3-4*C

Question 9

working principles - thermostat

Answer 9

-connected to the compressor
-maintains the constant internal temperature of 3-4*C within the refrigerator cabinet y turning on and off the motor when needed,e.g. if the door ir left open

Question 10

guidelines for using a refrigerator - 1

Answer 10

avoid overfilling and allow space between foods to enable air to circular and to keep foods at 3-4*C

Question 11

guidelines for using a refrigerator - 2

Answer 11

to avoid raising the internal temperature, cool wam or cooked foods to room temperature before placing them in the refrigerator

Question 12

guidelines for using a refrigerator - 3

Answer 12

store raw meat on the bottom shelf of the refrigerator to prevent drip contamination onto foods below, which could cause food poisoning

Question 13

guidelines for using a refrigerator - 4

Answer 13

keep foods, e.g. cooked ham and cheese, covered to prevent it from drying out, covering also prevents the transfer of odours from strong smelling foods to other foods, e.g. fish odours to milk

Question 14

the contribution of technology to efficient home management - 1

Answer 14

in the past, household tasks e.g. washing clothes were time consuming and labour intensive. nowadays, technological advances e.g. the washing machine, have reduced the amount of laabpur required, allowing more time for leisure e.g. walking

Question 15

the contribution of technology to efficient home management - 2

Answer 15

home are now cleaner and more hygienic places to live since appliances e.g. vacuum cleaners, are more efficient at cleaning compared to doing the job by hand

Question 16

the contribution of technology to efficient home management - 3

Answer 16

some heating and lighting systems now can be controlled remotely from mobile phones through download applications, this ensures that homes are warm when individuals return home and enhances security as lights can be switched one when people are away

Question 17

the contribution of technology to efficient home management - 4

Answer 17

computers nd rabeles can be used to carry out household financal task e.g. budgeting or banking online, and may also be sued to shop online for food or clothing, saving individuals and families time