Republic of the PhilippinesDepartment of Education

Region IV-A (CALABARZON)Division of CaviteSilang District II

INCHICAN ELEMENTARY SCHOOL

SECOND PERIODICAL TEST SCIENCE and HEALTH VI

Name: _____________________________ Score: __________Teacher: ____________________________ Date: ____________

I. Multiple Choice: Encircle the letter of the best answer.

1. Which of the following upsets ecological balance?a. deforestation b. presence of air pollution c. production of air pollutants d. both a and c

2. How can rapid population growth be controlled?a. population information and dissemination b. family planning c. death rate increase d. both a and b

3. It helps people know the bad effects of rapid population growtha. population commission b. population program c. population education d. population migration

4. When people line up to buy rice then there is ______ shortage.a. food b. water c. energy d. housing

5. The coming of more people to Metro Manila from the provinces is called _______.a. urban migration b. emigration c. evacuation d. tourism

6. The factor/s that contributes to air pollution is/are _____.a. smoking b. improper garbage disposal c. smoke belching motor vehicle d. all of the above

7. This/These factors cause water pollutiona. throwing garbage into creek by the people b. dumping of industrial wastes into bodies of waterc. spilling of oil on the seas d. all of the above

8. Adequate water supply can be ensured through _______.a. water pilferage b. water conservation c. water therapy d. water damage

9. Responsible parents do not only desire children but also accept ______.a. government aid b. responsibilities c. help from relatives d. dole-outs

10. It is used to identify matter.a. length b. weight c. form d. property

11. It is identified by its porosity.a. stone b. wood c. sponge d. paper

12. Pieces of jewelry are crafted by this property.a. malleability b. brittleness c. hardness d. porosity

13. _______ is a safe place for endangered plants and animals.a. deforestation b. ecological balance c. sanctuary d. migration

14. Plastics are examples ofa. biodegradable materials b. synthetic materialsc. natural materials d. preservatives

15. Why is pesticide not always beneficial?a. It destroys both useful and harmful organisms b. It exterminates harmful weedsc. It pollutes the soil and water d. both a and c

16. They are all alike.a. molecules of water and air b. molecules of airc. molecules of water d. molecules of gases

17. Which is the solvent?a. distilled water b. coffee and hot waterc. air d. sea water

18. Mother would like to enhance the color of the chicken she is cooking.a. salt b. sugar c. achuete d. vinegar

19. What are the materials that kill germs and prevent the spread of diseases?a. additive b. solvent c. antiseptic d. insecticide

20. Which solvent can remove a nail polish?a. water b. thinner c. vinegar d. acetone

21. Which of the following artificially created?a. wooden chair b. metal chair c. monoblock chair d. metal and wooden chair

22. What household materials are continuously improved by technology?a. kitchen utensils b. cooking appliances c. food containersd. all of the above

23. What causes health problems in an overcrowded place?a. lack of food b. dirty surrounding c. lack of health services d. all of the above

24. Why are your window grills, wall, furniture, roof and house painted?a. because paints prevent the iron from combining with oxygen and moisture in the airb. because it protects cropsc. it is used to kill insectsd. because paints are used before to remove stains in the clothes

25. How can we improve water supply?a. by buying bottled water b. by contaminating waterc. by conserving water d. by buying water purifier

26. Why is family planning necessary?a. To help increase the number of children in a familyb. To help produce more labor force in the family.c. To help control population explosion.d. To help improve young generation.

27. Which of the following shows concern for more healthful surroundings?a. participating in tree planting b. throwing away plastics into riversc. burying non-biodegradable materials d. dumping biodegradable materials in a nearby canal

28. _______, a polymer, gives a waxy appearance to plastic bags.a. plastic b. polyethylene c. turpentine d. thinner

29. A red dye is prepared from the dried bodies of the females of the cochineal insects.a. coccus lepus b. dactyl coccus c. dactylopius d. rubia lopius

30. Herbicide kills harmful ________.a. insects b. pests c. weeds d. animals

31. ___________ is a way of changing the arrangement of genes.a. Geodetic Engineering b. Genetic Engineeringc. Chemical Engineering d. Electrical Engineering

32. ________ is the wise use of our natural resources.a. reservation b. conservation c. separation d. application

33. _______ are the fundamental units of inheritance.a. genes b. cells c. molecules d. matter

34. In this system, _____ is the solute.a. glass b. water c. salt d. fire

35. _______ is a substance usually made by the action of alkali in fat.a. shampoo b. detergent c. soap d. additives

36. _____ destroys harmful insects in plants.a. fungicide b. insecticide c. herbicide d. pesticide

37. _______ is used as disinfectant and deodorizer or as whitening agent.a. bleach b. detergents c. soap d. shampoo

38. The agents of spoilage are bacteria, yeasts, insects and _______.a. algae b. molds c. ants d. moss

40. What is the hardest substance?a. rock b. diamond c. marbles d. iron

41. There is rapid growth of population in our country as shown in the latest statistics. Why should RPG be controlled?

a. to ensure the health of the children and the proper distribution of resourcesb. to ensure bigger budgets for the government birth control programsc. to cure unlawful activitiesd. to stop abortion

42. To help endangered animals species, the DENR established _________. a. sanctuaries b.government agencies c. reforestation programs d. fund-raising campaigns43. Which of the following is a food addictive?a. sodium chloride b. ammonia c. turpentine d. bleach44. Why is citric acid added to juices drink preparation?

a. Make the juice drink last longerb. provide red colorc. give the sour tasted. dissolves the solids

45. Before using the insecticides, you should read carefully the instructions on the label. Why?a. how to use it safelyb. its expiration datec. its manufacturesd. what is made of

46. How should non biodegradable wastes be disposed/a. by compostingb. by recyclingc. by reusing and compostingd. by recycling and reusing

47. What form of energy does food provide the human body?a. mechanical b. electrical c. chemical d. nuclear

48. Why can the human body perform various activities? Because ____a. of the energy it gets from foodb. of its fixed partsc. of oxygen in the bloodstreamd. of water it contains

49. Which of the following generate electricity?a. television b. refrigerator c. generator d. washing machine

50. Why is electricity commonly used as a source of energy in urban areas?a. because it is fashionableb. because it is convenientc. because there is pollutiond. because there is abundant of sunlight.

II. True or False. Write True if the sentence is correct and False if it is wrong.

_____51. Forests are homes to wildlife creatures._____52. Tarsiers of Bohol which are taught to be the smallest monkeys in the world._____53. Preservatives enhance tastes/color of foods._____54. Additives are chemicals which help preserve the quality of the food._____55. Pesticides become harmful when they contaminate ground water._____56. Forests play a vital role in the balance of nature._____57. Delayed marriage tends to limit family size._____58. DDT means dichlorodiphenyltrichloroethane._____59. A red pigment may be taken from the rubia plant._____60. Plastics are examples of synthetic materials.

III. Enumeration the following.

61-65. Give ways how to preserved/help ecological balance.66-72 Different forms of Energy.73-75 Ways how to conserved energy