Integrated Science and Agriculture Questions and Answers - Grade 7 End Term 1 Exams 2023 Set 1

INTERGRATED SCIENCE

1. Name any two factors that affect floating and sinking. (2 marks)
2. Describe why windows of bathrooms and toilets are made of frosted glass.   (2 marks)
3. What is matter? (2 marks)
4. Write TRUE or FALSE. (4 marks)
   1. Arteries are thin and they have valves.
   2. In the breathing system, gaseous exchange takes place in the air sacs.
   3. The ileum is the longest part of the digestive system.
   4. Life savers are made of materials that are sinkers.
5. Write any two uses of reflection of light in day today life. (2 marks)
6. Write two components of Integrated Science. (2 marks)
7. Name any two skills that one is equipped with by studying Integrated Science.   (2 marks)
8. Name two careers that are related to Integrated Science. (2 marks)
9. From the given pathways, which one of them is related to Integrated Science?   (1 mark)
   

   Social Sciences	Sciences Technology Engineering and Mathematics	Arts and Sports Science
   A.	B.	C.

10. Scientific investigations are carried out in a room known as _________________________ (1 mark)
11. What is the meaning of the term 'hazard"?   (1 mark)
12. Write four common hazards in the laboratory. (4 marks)
13. What is the meaning of the following symbols? (2 marks)
    
14. Match the following common laboratory accidents with their causes. (3 marks)
    

    Accident	Cause
    Burns	Slippery floor or running in the laboratory
    Falls	Taking in harmful chemicals
    Poisoning	Corrosive liquids or open flames

15. Why is it important to have a First Aid Kit in the laboratory? (1 mark)
16. Name two items that are found in the First Aid Kit. (2 marks)
17. What is the importance of wearing the following while in the laboratory? (3 marks)
    1. Goggles
    2. Apron
    3. Gloves
18. Describe how you would offer first aid to someone with a cut in the laboratory. (4 marks)
19. Name any two basic science skills.   (2 marks)
20. What is the very first step that one should take to help an electrocuted person in the laboratory? (1 mark)

In an experiment, grade 6 learners made a set up as shown below. Use it to answer question 21 and 22.  

21. Write two observations that the learners made. (2 marks)
22. What conclusion was made from the experiment? (1 mark)

The picture below shows Onyango carrying luggage on a wheelbarrow. Use it to answer question 23-25.  

23. Write any advantage of friction that Onyango may experience. (1 mark)
24. Write any disadvantage of friction that Onyango may experience. (1 mark)
25. Name two levers that belong in the same group with the wheelbarrow. (2 marks)

AGRICULTURE

1. Identify the types of soil erosion shown below.  (4 marks)
   
   ___________________________
2. Name any two methods of controlling soil erosion. (2 marks)
3. Name the nursery bed practices described below: (4 marks)
   1. It hardens the seedlings before transplanting.
   2. It ensures that we have few healthy seedlings.
   3. It ensures that water is conserved in the nursery by reducing evaporation.
   4. It helps the seedlings to have enough nutrients by removing weeds.
4. Name 4 ways of controlling small wild animals that harm our crops. (4 marks)
5. Name three examples of creeping crops? (3 marks)
6. Write two causes of soil pollution.    (2 marks)
7. What is the importance of adding compost manure to crops? (1 mark)
8. Write two ways of controlling soil pollution. (2 marks)
9. What is the importance of creating awareness messages on prevention of soil pollution? (1 mark)
10. What is the importance of controlling soil pollution in farming? (1 mark)
11. What is the importance of conserving water in farming? (2 marks)
12. What is the importance of the type of irrigation shown below? (1 mark)
13. What is the name given to the water that runs on the ground surface after rainfall? (1 mark)
14. Name three ways of conserving surface runoff. (3 marks)
15. What is the meaning of minimum tillage? (1 mark)
16. What is the importance of minimum tillage? (1 mark)
17. Name three minimum tillage practices.    (3 marks)
18. Why is it necessary to add ash to compost materials? (1 mark)
19. What is agroforestry? (1 mark)
20. Write two benefits of agroforestry. (2 marks)
21. Write one difference between trees grown in crop fields and trees grown in pasture fields. (2 marks)
22. Write two characteristics of agroforestry trees grown in crop fields. (2 marks)
23. Write two characteristics of agroforestry trees grown in pasture fields. (2 marks)
24. Which one of the following trees can be an agroforestry tree in the pasture field? (1 mark)
    
25. Which small animal causes the described harm to crops. (3 marks)
    1. eating the roots and tubers of crops
    2. eating small chicks and seeds of crops
    3. destroying fruits on crops

MARKING SCHEME

INTEGRATED SCIENCE

1. shape, material, weight, density
2. so that no one can see in the toilet/ bathroom
3. anything that has mass and occupies space
4. false, true, true, false.
5. side mirrors, home mirrors, microscope
6. physics, chemistry, biology, earth science, astronomy
7. manipulative skills, observation, classification, communication
8. medicine and surgery, nursing
9. B
10. laboratory
11. It is a danger or risk
12. electrical hazards, fire hazards, exposure to chemicals, slips
13. electric shock, radioactive
14. Assess
15. to conduct first aid Incase of any injury in the laboratory
16. antseptic, cotton wool, gloves, bandages, plasters
17.  
    • goggles-Keep your eyes from dangerous gases/fumes
    • apron - keep your clothes from dirt
    • gloves-keep your hands from dirt or chemicals
18.  
    • wash the cut with clean water
    • raise the bleeding part, use a bandage or clean cloth to apply pressure and stop bleeding
    • clean the area around the cut using antiseptic
19. manipulative skill, observation skill, measuring skill, prediction skills, communication skill
20. turn off the source of electricity/nove the injured person away using a dry non conductor
21. the candle went off, water level in the glass jar rose, water level in the basin went down
22. air/ oxygen support burning
23. walking, the tyre holding on the road 
24. tear and wear of his shoes and tyre 
25. nut cracker, bottle opener

AGRICULTURE  

1. rill erosion, gulley erosion, sheet erosion, splash erosion
2. building gabions, contour ploughing.
3. planting cover crops
   
   1. reduce shading
   2. thining
   3. mulching/shading
   4. weeding
4. fencing, use of a scarecrow, scaring by dogs
5. watermelon, pumkin
6. water, wind
7. It adds nutrients to the soll, it improves soll fertility
8.  
   • using correct amount and type of fertiliser
   • safe disposal of used agricultural chemical container
   • safe disposal of plastic waste
9. It make the community aware/ Informed on how to prevent soli pollution
10. soil pollution should be controled because it may be a health hazard 
11. to be used in times of scarcity, to save money, ensure that there is water for human life and livestock
12. It conserves water, uses little water, does not waste water
13. surface runoff
14. use of water retention ditches, earth basin
15. It refers to reducing the number of land preparation practises
16. It helps to conserve soll moisture
17. slashing weeds, restricted cultivation,
18. to increase the rate of decomposition
19. It is the growing of trees where crops are- grown and animals are kept
20. It reduces soll erosion, improves water conservation, reduces water runoff, protects crops and animals from strong
    winds
21. In crop fields the trees are tall, in pasture fields they are short
22. they have a multi-branch crown, leaves are formlike, seed are produced in pods, 
23. they have a rounded crown, dense, small and finely divided leaves, large sead pods, single or double branched stem
24. tree B
25.  
    1. mole
    2. squirrel
    3. birds, monkey