Home Science Paper 1 Questions and Answers - Term 3 Form 3 End Exams 2023

INSTRUCTIONS:

• This paper consists of three sections A, B and C.
• Answer all questions in section A, Question 22 (Compulsory) in B and any two questions from C

                                                                                        SECTION A (40 MARKS)
                                                      Answer all the questions in the section in the spaces provided.

1. Mention two uses of sugar in a creamed mixture. (1 mark) 
   
2. State two nutrients that are important in the diet of a person who is convalescing from major surgery. (2 marks)
3. Give two reasons for using a wooden spoon for cooking. (2 marks)
4. List four women that are at the risk of developing anaemia in pregnancy. (2 marks)
5. List four diseases that a school cook should be regularly screened for. (2 marks)
6. State four ways of ensuring efficiency when doing cleaning in the school. (2marks)
7. Mention four methods of cooking meat. (2 marks)
8. Outline three benefits of the free maternal care the government is offering to pregnant women. (2 marks)
9. Highlight two common causes of high fever in breastfeeding babies. (1 mark)
10. Give two reasons for using machine fell seam on denim trousers. (2 marks)
11. List two methods of making fabrics. (1 mark)
12. State two reasons why a consumer may lack information on the goods and services available in the market. (2 marks)
13. Why is oedema common in pregnant women? (1 mark)
14. State three points on the importance of child immunization. (3 marks)
15. State three problems that a consumer may face in the process of purchasing goods and services. (3 marks)
16. Draw symbols to communicate the following information: (2 marks)
    • place on fold
    • grain line
    • do not bleach
    • hang to dry on a line
17. State two reasons why silk is expensive. (2 marks)
18. Identify the following six stitches (3 marks)
                                                                       
19. Differentiate between a tuck and a pleat. (2 marks)
20. State two points to ensure that hygiene is observed during weaning. (2 marks)
21. Give two reasons for dipping a boiled egg in cold water. (1 mark)
             
                                                                               SECTION B (20 MARKS)
                                                                                        COMPULSORY
                                                      Answer all sections of this question in the spaces provided.
22. Your sister is celebrating her 21^st birthday and has asked you to assist her in the preparations.
    1. Outline the procedure to follow when laundering and treating the white linen table cloth with a fresh stain to be used when setting the table. (12 marks)
    2. Outline the procedure you will follow in cleaning the wooden floor in the living room in readiness for the party. (8mks)
       
                                                                                 SECTION C (40 MARKS)
                            Answer any TWO questions from this section on the spaces provided after the questions.
23.  
    1.  
       1. Discuss two problems faced by consumers in Kenya today. (4 marks)
       2. Explain three advantages of budgeting the family income. (3 marks)
    2. Explain three factors to consider when setting a table for the invited guests. (6 marks)
    3. Study the pictures below and answer the questions that follow.
                                                                                      A                                    B 
                                                           
       1. Name the nutritional disease each of the babies is suffering from (1 mark)
       2. Outline six differences between the two conditions (6 marks)
24.  
    1.  
       1. List four materials suitable for finishing a dining room floor. (2 marks)
       2. Outline six important steps in bathing a baby. (3 marks)
    2. State two functions of each of the following in relation to pregnancy; (6 marks)
       1. Umbilical cord
       2. Placenta
       3. Amniotic fluid
    3. Outline four qualities of a good floor mop with a wooden handle. (4 marks)
    4. Highlight five ways of enhancing personal health. (5 marks)
25.  
    1. List six details found on a biscuit packet. (3 marks)
    2. Discuss five points on choice of play items for a two year old. (5 marks)
    3. State four measures that should be taken to ensure that water storage containers are safe for use. (4 marks)
    4. Give the name of each of the parts of the machine described below: (4 marks)
       • Covers the part that houses the bobbin case and protects the shuttle
       • Holds the fabric firmly during stitching
       • Controls the movement of thread to the needle
       • Moves the fabric forward when sewing
       • Holds the reel of thread
       • Stops the movement of the needle for winding of the bobbin
       • Holds the needle in place
       • Controls the tension of the upper thread
    5. Mention four ways a lactating mother can improve milk production (4 marks)

                                                                                    MARKING SHEME

                                                                                             SECTION A (40 MARKS)

1. Uses of sugar in a creamed mixture. (1 mark)
   • Helps in keeping the cake moist
   • Aids in trapping of air during creaming
   • Makes the cake sweet
   • Promotes a good crust colour of the baked product
     (½ mark for each correct response, ½ x 2 = 1 mark)
2. Nutrients that are important in the diet of a person who is convalescing from major surgery. (1 mark)
   • Proteins
   • Vitamin C
   • Iron
     (½ mark for each correct response, ½ x 2 = 1 mark)
3. Reasons for using a wooden spoon for cooking. (2 marks)
   • It does not conduct heat so will not cause a burn
   • It does not scratch the surface of the pan
   • It does not react with food chemicals
     (1 mark for each correct response, 1 x 2 = 2 marks)
4. Women at risk of developing anaemia in pregnancy. (2 marks)
   • Teenagers
   • Those who have had pregnancies close to each other
   • Women pregnant with more than one child
   • Those who vomit a lot (severe morning sickness)
   • Women who were anaemic before pregnancy
   • Those who have a very poor diet that does not supply enough iron
     (½ mark for each correct response, ½ x 4 = 1 marks)
5. Diseases that a school cook should be regularly screened for. (2 marks)
   • Typhoid
   • Tuberculosis
   • Cholera
   • Hepatitis A
   • Brucellosis
     (½ mark for each correct response, ½ x 4 = 2 marks)
6. Ways of ensuring efficiency when doing cleaning in the school. (2marks)
   • Use the correct equipment
   • Collect all equipment and materials and reagents needed before starting cleaning
   • Use the correct posture when cleaning
   • Use clean water
   • Clean regularly to avoid accumulation of dirt
   • Clean in a systematic manner
     (½ mark for each correct response, ½ x 4 = 2 marks)
7. Mention four methods of cooking meat. (2 marks)
   • Boiling
   • Frying
   • Stewing
   • Roasting
   • Grilling
   • Broiling
   • Pot roasting
     (½ mark for each correct response, ½ x 4 = 2 marks)
8. Benefits of the free maternal care the government is offering to pregnant women. (3 marks)
   • Gives proper medical support to women who cannot afford medical care
   • Reduces maternal deaths due to pregnancy complications
   • Ensures that women are given proper care during pregnancy
   • Reduces child mortality and infant deaths through early identification and treatment of health problems
   • Ensures that women deliver safely and in clean facilities
     (1 mark for each correct response, 1 x 3 = 3 marks)
9. Common causes of high fever in breastfeeding babies. (1 mark)
   • Ear infection
   • Throat infection
   • Respiratory tract infection
   • Influenza
   • Common cold
   • Pneumonia
10. Reasons for using machine fell seam on denim trousers. (2 marks)
    • Gives a decorative effect
    • It is a strong seam
    • Lies flat
    • It is not bulky
      (1 mark for each correct response, 1 x 2 = 2 marks)
11. Methods of making fabrics. (1 mark)
    • Weaving
    • Knitting
    • Crocheting
    • Bonding
      (½ mark for each correct response, ½ x 2 = 1 mark)
12. Reasons why a consumer may lack information on the goods and services available in the market. (2 marks)
    • Lack of education/awareness
    • Little information on products
    • Poor access to advertised information
    • Failure by sellers and manufacturers to disclose information
      (1 mark for each correct response, 1 x 2 = 2 marks)
13. Why is oedema common in pregnant women? (1 mark)
    • Oedema occurs mainly in the later months of pregnancy when the pressure of the enlarging uterus puts pressure on the legs and feet reducing circulation. This leads to fluid buildup in the tissue.
      (Response correctly stated 1 mark)
14. Points on the importance of child immunization. (3 marks)
    • Saves life by protecting the baby from serious childhood infections
    • Helps protect future generations by eradicating diseases
    • Protects children from deformities that may be caused by illnesses like polio
    • Reduces cost of treating children who are seriously ill when not immunized
    • Reduces mortality rate of children from killer childhood diseases
      (1 mark for each correct response, 1 x 3 = 3 marks)
15. Problems that a consumer may face in the process of purchasing goods and services(3 marks)
    • Lack of information
    • Poor quality goods and services
    • High price of goods and services
    • Unavailability of goods and services in the market
    • Counterfeit goods
      (1 mark for each correct response, 1 x 3 = 3 marks)
16. Symbols to communicate the following information: (2 marks)
    • place on fold                 
    • grain line                           
    • do not bleach                             
    • hang to dry on a line                 
      (½ mark for each correct response, ½ x 4 = 2 marks)
17. State two reasons why silk is expensive. (2 marks)
    • It is expensive to produce
    • It is not easily available
    • It is labour intensive to extract silk from cocoons
      (1 mark for each correct response, 1 x 2 = 2 marks)
18. Identifying the stitches (3marks)
                   
    (½ mark for each correct response, ½ x 6 = 3 marks)
19. Difference between a tuck and a pleat. (2 marks)
    • A pleat has three layers while a tuck has only two layers
    • A tuck is stitched all along its length but a pleat may not be stitched or may be stitched to hold it down for a short length
      (1 mark for each correct response, 1 x 2 = 2 marks)
20. Points to ensure that hygiene is observed during weaning. (2 marks)
    • Always wash hands before preparing weaning food
    • Keep equipment and work surfaces clean
    • Prepare fresh food for every meal
    • Avoid cross contamination of food by using separate boards when chopping vegetables and meat
    • Keep cooked food covered
    • Sterilise feeding equipment
      (1 mark for each correct response, 1 x 2 = 2 marks)
21. Reasons for dipping a boiled egg in cold water. (1 mark)
    • Reduces formation of the dark green colour around the yolk
    • Makes it easier to shell the egg
      (½ mark for each correct response, ½ x 2 = 1 mark)
      
                                                                              SECTION B (20 MARKS)
                                                                                       COMPULSORY
22. Your sister is celebrating her 21^st birthday and has asked you to assist her in the preparations.
    1. Procedure to follow when laundering and treating the white linen table cloth with a fresh stain to be used when setting the table. (12 marks)
       • Collect all equipment and materials (½)
       • Shake(½) the table cloth to remove loose dirt
       • Cover the stain with borax (½)and pour boiling(½) water through
       • Rinse the area to remove the stain remover(½)
       • Soak (½)the table cloth in plain cold (½)water
       • Remove from soaking water and wash in hot (½) soapy(½) water using friction(½) method
       • Rinse severally in clean hot(½) water to remove all soap and dirt
       • Prepare hot water starch by mixing 1 table spoon starch (½) with 2 table spoon cold (½) water to make a paste. Add ½ litre boiling (½) water while stirring continuously. Dilute with 2 litres (½) of water to make a strength of 1:4 (½). Knead and squeeze the table cloth in the diluted starch solution(½)
       • Put the table cloth to dry out on the line in the sun (½)secured with pegs (½)
       • Remove while slightly damp (½) and iron using a hot (½) iron. Iron starting with hems on the wrong side (½) then iron the whole table cloth
       • Put in ventilated place to air (½)
       • Fold (½) using the four screen fold(½) and store ready for use
       • Clear the working area (½)
         (½ mark x 24 = 12 marks)
    2. Outline the procedure you will follow in cleaning the wooden floor in the living room in readiness for the party. (8 marks)
       • Collect all equipment and materials (½)
       • Move all light furniture to the centre of the room (½)
       • Sweep (½) from the furthest corner toward the door, collect the rubbish (½) and dispose (½) it off correctly
       • Wipe the floor (½) with a damp cloth (½) to remove any dirt, start from the furthest corner and move towards the door (½). Clean portion by portion overlapping parts
       • Leave the floor to dry completely (½)
       • Polish (½) the floor using circular motion (½), from the furthest corner, portion by portion and overlapping parts (½)
       • Leave the polish to dry (½)
       • Buff (½) with a soft dry cloth (½)
       • Rearrange the room (½)
       • Clear up (½)
         (½ mark x 16 = 8 marks)
                                                                                 SECTION C (40 MARKS)
23.  
    1.  
       1. Environmental challenges paused by COVID 19. (4 marks)
          • Used face masks that are carelessly disposed may spread the virus
          • Poorly disposed masks may cause heaps of waste as they do not decompose easily
          • Face masks may clog open drains causing them to block
          • Used face masks may be blown by wind to water bodies and cover the surface cutting off oxygen for water creatures
          • Fish and other water creatures may swallow the masks and this may lead to their death
            (1 mark for each correct response, 1 x 4 = 4marks)
       2. Advantages of budgeting for your pocket money. (3 marks)
          • Better use of money. When one budgets they are able to make better use of the money that they have
          • Money will last through the term
          • The money can be used to buy some legal items not catered for by parents for example a book of interest
          • One can save some of the money for later use
          • In case of an emergency, one will have money to use
            (1 mark for each correct response, 1 x 3 = 3 marks)
    2. Factors to consider when setting a table for invited guests. (6 marks)
       • Number of guests. This will ensure that there are enough places set for diners
       • Type of meal to be served. This makes it easier to set the correct cutlery and crockery
       • Type of meal service to use. Allows one to know how to arrange the cutlery and crockery.
       • Special needs of diners. It is important to know if there is a diner who has a physical challenge or is left handed to set their cover for their comfort
       • Age of diners. Children and the elderly may need special consideration when setting their place at table
         (1 mark for statement, 1 mark for explanation, 2 x 3 = 6 marks)
    3. Study the pictures below and answer the questions that follow.
                                                  A                                                      B
                                  
       1. Name of the nutritional disease each of the babies is suffering from (1mark)
          • Child A is suffering from marasmus
          • Child B is suffering from kwashiorkor
            (½ mark for each correct name, ½ x 2 = 1 mark)
            (Note if the diseases are not correctly identified then part ii of the question is wrong)
       2. Differences between the two conditions (6 marks)
          • In kwashiorkor the child has oedema thus looks puffy while in marasmus the child loses weight and is emaciated
          • Kwashiorkor only occurs in children while marasmus can occur at any age
          • The hair for a child with kwashiorkor looks silky and brown while hair does not change in a child with marasmus
          • Eyes look puffy or swollen for a child with kwashiorkor while a the eyes of a child with marasmus are sunken
          • A child with kwashiorkor is miserable and disinterested in what is going on around while a child with marasmus is alert and interested in all that is going on around
          • A child with kwashiorkor has very poor appetite while one with marasmus is ravenous
          • A child with kwashiorkor puts on weight due to retained fluids while the one with marasmus loses a lot of weight leading to wrinkled skin
            (1 mark for each correctly matched response, 1 x 6 = 6 marks)
24.  
    1.  
       1. Materials suitable for finishing a dining room floor. (2 marks)
          • Wood
          • Cork
          • Ceramic tiles
          • Linoleum tiles
          • Cement
          • Rubber tiles
            (½ mark for each correct response, ½ x 4 = 2 marks)
       2. Important steps in bathing a breast feeding baby. (3 marks)
          • Putting together the clothes the baby will wear and all bath items needed
          • Getting the bath water ready
          • Warming the room or closing windows to avoid draught
          • Undressing and covering the baby with a towel
          • Cleaning the baby’s head and face
          • Bathing the baby
          • Drying the baby
          • Applying oil on the baby
          • Dressing the baby
          • Feeding the baby
          • Clearing up
            (½ mark for each correct response, ½ x 6 = 3 marks)
    2. Functions of each of the following in relation to pregnancy; (6 marks)
       1. Umbilical cord
          • It transports oxygen to the foetus since the foetus lungs are not functional
          • It carries nutrients to the foetus thus keeping the foetus nourished
          • It transports wastes away from the foetus back to the mother’s system for excretion
            (1 mark for each correct response 1 x 2 = 2 marks)
       2. Placenta
          • Acts as a barrier that prevents harmful products from reaching the foetus while allowing useful products to pass through
          • Produces hormones that help in the growth and development of the baby
          • Protects the foetus from infections
          • Allows the transfer of food and oxygen to the foetus
            (1 mark for each correct response 1 x 2 = 2 marks)
       3. Amniotic fluid.
          • Allows the foetus to move around in the uterus thus helping in exercising the muscles
          • The foetus breathes in the fluid allowing it to practice breathing and aid in lung development
          • Keeps the foetus warm since the fluid is at constant body temperature
          • Protects the foetus from blows that come to the abdomen for example if the mother falls
          • Acts as a lubricant so that parts do not get stuck together like webbed toes and fingers
            (1 mark for each correct response 1 x 2 = 2 marks)
    3. Qualities of a good floor mop with a wooden handle after use. (4 marks)
       • The handle should be smoothly finished
       • The handle should be long enough to avoid bending when cleaning
       • The handle should be firmly fixed to the head
       • The strands should be absorbent
       • He mop should not produce fluff when cleaning
       • The mop strands should be firmly held in the head
         (1 mark for each correct response 1 x 4 = 4 marks)
    4. Ways of enhancing personal health. (5 marks)
       • Exercise regularly
       • Observe personal hygiene
       • Eat a varied diet
       • Have enough rest
       • Take care of mental health by reducing stress
       • Engage in a hobby or game of interest for relaxation
       • Keep away from very loud noise that could impair hearing
       • Avoid very fatty and sugary drinks that could be injurious to health
         (1 mark for each correct response 1 x 5 = 5 marks)
25.  
    1. Details found on a biscuit packet. (3 marks)
       • Name of the manufacturer
       • Manufacturers address
       • Name of the particular brand of biscuit
       • Weight of the product
       • Ingredients used
       • Nutritional information
       • Date of manufacture and expiry date
         (½ mark for each correct response, ½ x 6 = 3 marks)
    2. Points on choice of play items for a two year old. (5 marks)
       • Consider the age of the child and choose toys appropriate for the age
       • Toys should have smooth edges to avoid hurting the baby
       • They should be easy to keep clean to avoid infections in the baby
       • They should not have very small parts that be baby could swallow
       • They should be easy to carry around or move
       • They should be varied to allow the child to have different activities
         (1 mark for each correct response, 1 x 5 = 5 marks)
    3. Measures that should be taken to ensure that water storage containers are safe for use. (4 marks)
       • They should be cleaned frequently
       • They should only be used for storing clean water
       • Do not put hot water in the container, it may distort it especially if plastic
       • They should be tightly covered to ensure the water remains clean
       • They should be stored away from heat
         mark for each correct response, 1 x 4 = 4 marks)
    4. Name of each of the parts of the machine described below: (4 marks)
       • Covers the part that houses the bobbin case and protects the shuttle   - slide plate
       • Holds the fabric firmly during stitching  - presser foot
       • Controls the movement of thread to the needle   - take-up lever
       • Moves the fabric forward when sewing  -  feed dog
       • Holds the reel of thread  - spool pin
       • Stops the movement of the needle for winding of the bobbin - stop motion screw
       • Holds the needle in place  - needle clamp
       • Controls the tension of the upper thread - tension disc
         (½ mark for each correct response, ½ x 8 = 4 marks)
    5. Ways a lactating mother can improve milk production (4 marks)
       • Increasing intake of fluids since milk is more than 90% water
       • Ensuring she is relaxed when breastfeeding
       • Avoid alcohol and smoking as these reduce milk production
       • Breastfeed the baby regularly to enhance hormones that ensure milk production
       • Ensure she feeds well and on a varied diet
       • Have enough rest as stress reduces milk production
         (1 mark for each correct response, 1 x 4 = 4 marks)