Home Science/Computer Questions and Answers - Grade 7 End Term 3 Exams 2023 Set 1

1. Name 4 substances that can be added during making of soap. (3mks)
2. Give 3 categories that can be used to group vegetables. (2mks)
3. Define the term parboiling. (2mks)
4. List 4 methods of buying goods and services from sale outlets. (2mks)
5. List 3 categories of natural fibres. (1mk)
6. Write down 5 factors to consider when selecting different types of sewing machines (1mk)
7. List 4 type of seams. (3mks)
8. Write down 3 locally available materials that can be used when making home made starch to use in laundry. (3mk)
9. List the 3 principles of nutrient conservation in food handling. (1mk)
10. Write the meaning of the following terms  (3mks)
    1. Food enrichment
    2. Food fortification
    3. Food supplement
11. List 5 ways in which kitchen tools and equipment are classified.  (3mks)
12. Write 4 ways a person can save income when buying goods and services. (5mks)
13. Name 2 animal sources of fibre  (2mks)
14. List 3 different types of sewing machines.  (3mks)
15. Write down 2 forms of soapless detergents.  (2mks)

COMPUTER.

1. State two characteristics of 1st generation computers (2mks)
2. List any two hardware components. (2mks)
3. Write one factor to consider when selecting appropriate hardware components. (1mk)
4. C.P.U has 3 components list them down  (3mks)
5. Write the abbreviations in full.  (5mks)
   1. ALU
   2. USB
   3. www
   4. HDMI
   5. PDF
6. Explain two problems experienced when setting up computers (4mks)
7. State two functions of a computer. (4mks)
8. List three causes of Repetitive strain Injury(RSI)  (3mks)
9. State three physical threats to computers.  (3mks)
10. List any four types of personal data.  (4mks)
11. List five health complications associated with the use of computers. (4mks)
12. What is the meaning of the word 'repository' as used in computing? (2mk)
13. Give three benefits of computer programming (3mks)
14. Name any three applications that can be used to create programs in visual programming  (3mks)

MARKING SCHEME

HOME SCIENCE

1.  
   • Fragrances or scents
   • disinfectants
   • colourants or dyes
   • glycerine
2.  
   • flower vegetables
   • pods and seed vegetables
   • stem vegetables
   • fruit vegetables
   • root vegetables
3. Parboiling is the partial or semi-boiling of food as the first step in cooking
4.  
   • cash
   • credit
   • mobile money
   • barter trade
   • debit card
5.  
   • plant fibre
   • animal fibre
   • mineral fibre
6.  
   • cost
   • space
   • uses of the machine
   • user friendly 
   • spare parts
   • mode of operation
   • brand or manufacturer
   • Running of the machine is easy to run
7.  
   • plain seam
   • open seam
   • overlaid seam or lapped seam
   • french seam
   • double stitched seam
8.  
   • potatoe
   • maize
   • rice
9.  
   • Reduce the amount of water used
   • Reduce the cooking time
   • Reduce the surface area of food
10.  
    1. The practice of adding value to food and restoring nutrients lost
    2. The process of adding nutrients to a certain food during processing
    3. Eating food supplements in form of syrups, capsules or tablets
11.  
    • baking utensils
    • pans and pots
    • cutting tools
    • measuring and weighing tools
    • shaping and moulding tools
    • separating tools
    • turning and scooping tools
    • storage equipment
    • traditional utensils
12.  
    • Track your spending
    • prepare and use a shopping list
    • bulk buying
    • bargaining
    • compare different prices
    • buy when there are promotions
13.  
    • sheep
    • silk worm
14.  
    • treadle machine
    • hand-driven machine
    • motor drive or electric machine
15.  
    • foam
    • powder
    • liquid
    • paste

COMPUTER 

1.  
   • Used a lot of water
   • very slow
   • produced a lot of heat
   • very large
2.  
   • mouse
   • cables
   • monitor
   • keyboard
3. The use of the hardware
4.  
   • Arithmetic and Logic unit
   • main memory/special memory
   • control unit
5.  
   1. Arithmetic and Logic Unit
   2. Universal Serial Bus
   3. World Wide Web
   4. High Definition Media Interface
   5. Portable data file
6.  
   • Lack of skills
   • Difficulty in matvhing cables
   • Lack of skills
7.  
   • learning
   • teaching
8.  
   • bad posture
   • repetitive movement
   • force
9.  
   • malware
   • cyber bullting
   • denial of service
   • polishing
10.  
    • Email-address
    • personal identification number
    • finger prints
    • registration number
11.  
    • Vision problems
    • muscle and skeleton problems
    • repetitive strain injury
    • headaches
    • obesity
12. A place where data and information is stored and managed
13. It helps people to use computers for different purposes
14.  
    • It helps in the interaction through phones, computers and many others
    • Programming helps in developing animations, graphics and games which can be used ethic messages to people
    • It helps in interactive learing and outline learning through website videos