STD 7 END YEAR 2021 HOLIDAY ASSIGNMENT.

SCIENCE.

SECTION A.
Use the diagrams below to answer question 1-5.


1. The above organs are  called kidneys. Which one of these functions do they carry out?

2. The part labelled 8 is _____

3. The work of the part labelled 3 is ________

4. The part that is called urethra is labelled _____

5. The name of the tube labelled 2 is _______

6. Drugs that are allowed by the government to be used are called____

7. Which one the following is an internal parasite?

8. Acid rain is formed when _______ and ______ gases dissolve in rain water.

9. An animal or plant in which a parasite lives and gets its food is called a ___

10. Fertilizers which provide plants with two or more nutrients are called ____

11.  The chemical in tobacco that causes addiction is _____

12. Red blood cells and most white blood cells are produced in the_____

13. The earth rotates from ______ to _____

14. For how long will a cholera vaccine last in the body?

15. The third dose of Polio is given at the age of ____

16. The natural home for animals is called _____

The diagram below is of  male reproductive organs. Use it to answer questions 17-20.

17. The part labelled A is ______

18. The function of the parts labelled E is ______

19. Which of the following parts is called prostate gland?

20. The function of the part labelled C is _______

SECTION B.
Give the correct answer in each of the questions below.
21. Blood in sputum is a major sign of a disease called _____

22. Sperms are stored in _____

23. Aquatic animals get air from the ____

24. The letters VCT mounted in areas where HIV and AIDS is tested stand for___

25.  The short form of writing the vaccine for tuberculosis is ____

26. The living component of the environment is called ____

27. The method of grazing best suited for a few animals and small land is ____

28.Silage is stored in a deep pit known as ____

29. The planet with the greatest force of gravity is _____

30. The rocks that float in space are called____

SECTION C.
Kibet set up an experiment as shown below. Use it to answer questions 31 1nd 32.

31. If the bulb lit, this shows that _____

32. Which part in the set up acts as the negative electrode?

The diagram below is an example of a lever. Use it to answer questions 33-35.

33. Which numbered part acts as a fulcrum? (use numbers as in the diagram).

34. Number 5 represents the _____

35. In which two numbers is the effort applied?

Maina and Indasi are boys of the same height and mass. The two boys are competing to slide as shown by the picture below

36. Which boys would reach down first?

37. According to the picture, which is the direction of friction?

38. One scientific mistake that Boy A made is ________

Take a glass and add and some little cooking oil in it. Then add similar amount of water in the same glass. Stir well. Wait for some minutes  the mixture to settle. Take another glass and now separate the two liquids as shown below.

Fig. i

Fig ii
39. This method of separating these two liquids is known as ____

40. Did the two liquids mix well? These two liquids are referred to as ___

Thank you for completing your Science Assignment.

Enjoy your holiday!