Page 99 - Science and Technology Std 3

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Revision exercise

Answer all the questions.
FOR ONLINE USE ONLY
1. (a) Choose the living things among the following.

Hen, lion, tin, frog, book, cat, guava plant, grass,

desk, maize plant.

(b) What is the total number of living things in (a)

above?

(c) What is the total number of non-living things in (a)

above?
2. Explain why a metallic plate with a hot food burns
more than a clay plate with hot food.

3. (a) List five objects which can fly in the air.

(b) Explain the characteristic features which enable
objects to fly.

4. Explain the differences between using a spanner and
a hand to fasten nuts.

5. Why may measuring length using footsteps provide
different results?

6. Explain how you can make your body clean and smart.

7. Mention the group of foods which protect the body
against diseases.

8. Which part of the human digestive systems is concerned
with the absorption of water and minerals?

9. Why is it not good to share sharp objects like syringes?

10. Explain the procedures for giving first aid to a person
who has been bitten by a wasp.

92

PROPERTY OF UNITED REPUBLIC OF TANZANIA GOVERNMENT
Ministry of Education, Science and Technology
Science and Technology 3.indd 92 03/08/2019 11:02