What is the function of a machine? A. To simplify work C. To produce goods B. To communicate D. To lift loads [ ]

Match the descriptions about heat energy concepts in List A with the corresponding concepts in List B. List A Answers List B i) How heat travels in metal A. Solid ii) Spreading of heat in water B. Sun iii) How the sun's heat reaches Earth C. Fire iv) How matter transports heat quickly D. Radiation v) Natural source of heat E. Conduction F. Convection G. Liquids

1. Namna joto linavyosafiri katika chuma (1 mk)
2. Kusambaa kwa joto katika maji (1 mk)
3. Namna joto la jua linavyofika duniani (1 mk)
4. Maada inavyosafirisha joto kwa haraka (1 mk)
5. Chanzo ca asili cha joto (1 mk)

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Answer items (i) to (v) by choosing the correct answer from the box and writing it in the space provided. Oxygen, Food, Water, Air, Soil, Carbon dioxide, Plants i) Which gas is used by plants as raw material? ii) What is the result of the combination of various gases? iii) What is the source of food for living organisms? iv) What type of gas is directly needed by living organisms? v) What is the source of nutrients for various body functions?

Read the following passage and answer items (i) to (v) by writing the correct answer in the space provided. We can see the water we use is safe to the eyes, but it may not be safe for our health. This is because when water flows on the ground, it picks up soil and sometimes picks up disease-causing microorganisms. Therefore, we are advised to boil water to kill disease-causing germs. After boiling, we should filter it using a clean cloth to remove dirt. Also, boiled and filtered water should be stored in a clean container with a lid to prevent contamination. This is now clean and safe water. Questions: i) Why is it important to boil water? ii) How does water get microorganisms? iii) What should be done to make water clean and safe? iv) What tool is used to filter water? v) Why is water stored in a container with a lid?

1. Why is it important to boil water? (1 mk)
2. How does water get microorganisms? (1 mk)
3. What should be done to make water clean and safe? (1 mk)
4. What tool is used to filter water? (1 mk)
5. Why is water stored in a container with a lid? (1 mk)

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Examine the following pictures then answer items (a) and (b) a) What are the names of the items shown in the pictures? i) ii) b) What disease is transmitted due to sharing these items? c) What method is used to detect a person affected by the disease you mentioned in item (b)? d) What other way does the transmission of the disease you mentioned in item (b) occur? e) Why is it advised not to stigmatize a person suffering from the disease you mentioned in item (b)?

1. What are the names of the items shown in the pictures? (2 mk)
2. What are the names of the items shown in the pictures? (2 mk)
3. What disease is transmitted due to sharing these items? (3 mk)
4. What method is used to detect a person affected by the disease you mentioned in item (b)? (2 mk)
5. What other way does the transmission of the disease you mentioned in item (b) occur? (2 mk)
6. Why is it advised not to stigmatize a person suffering from the disease you mentioned in item (b)? (4 mk)

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