Science and Health: Chapter 4 - Test (41-50)

41. During the months of July to September, we experience heavy rains. This statement describes our _____________.

a. weather
b. climate
c. summer
d. geographic location

42. Short dry season occurs in areas which are protected from the northeast monsoon but open to the Southeast Monsoon. An example of this area is ____________.

a. Samar
b. Quezon
c. Cagayan Valley
d. Batangas

43. When peopletake corals out of the sea, they ____________.

a. Help clean the sea.
b. destroy the shelter of small fishes]
c. pollute the sea
d. protect the fishes

44. Which of the following shows the beneficial effect of common materials used at home?

a. Soap and detergents create foams in rivers and streams.
b. Pesticides kill even non-target species or organisms.
c. Preservatives help prevent foods from decaying or decomposing.
d. Food additives, including preservatives, cause health problems.

45. In which of the following cases is work in the scientific sense being done?

a. a girl doing her homework
b. a girl sitting inside a car
c. a boy holding a book
d. a stone rolling downhill

46. Which of these causes the seasons of the earth?

a. The distance of the earth as it revolves around the sun.
b. The clockwise revolution of the earth around the sun.
c. The counterclockwise revolution of the earth around the sun.
d. The earth’s revolution and the tilting of its axis away or towards the sun.

47. Which of the following statement is true.

a. Energy can be created.
b. Energy can be destroyed.
c. Energy can be transformed to another form.
d. Energy can increase in amount.

48. Which is a product of respiration?

a. Oxygen
b. carbon dioxide and water
c. nitrogen
d. both a and b

49. \this is the largest part of the brain and controls mental processes such as thinking, memorizing and decision making.

a. spinal cord
b. cerebrum’
c. cerebellum
d. medulla oblongata

50. It is the chemical reaction of food caused by the action of yeasts and bacteria on food?

a. combustion
b. mixture
c. combination
d. fermentation

Science and Health: Chapter 4 - Test (11-20)

11. Why does the climate differ in the different parts of the Philippines?

a. This is due to the hot weather in the Philippines. b. Because the Philippines is in the tropics. c. Because of the different latitudes, the bodies of water around it and the special winds that pass through it. d. This is due to the hot and cold weather in the Philippines.

12., \why do some stars appear brighter than the others?

f. Bright stars are the big ones .g. Bright stars are those that are big as the sun. h. Bright stars give off more light or are nearest toe the earth than the others.. i. None of the above

13. Which of the following statements will illustrate how big the universe is?

a. The universe is composed of ten planets. b. If you are in space looking for our sun, it would just like be looking for particular grain of san from all the particles of sand on earth. c. The universe is like a group of white clouds. d. The universe is composed of two galaxies.

14. Why is vaccination important?

a. It stimulates the immune system to produce antibodies. b. It kills the harmful organism in the body. c. It stimulates the production of lymph nodes. d. It enables the immune system to recognize all kinds of diseases.

15. A substance that cannot be broken down into simplest form is called an element.

a. water b. iron c. sugar d. carbon

16. Which of the following tells about the magnitude of an earthquake?

a. amount of energy released b. duration of shaking c. distance from epicenter d. depth of focus

17. What alloy is formed when iron and brass is combined?

a. brass b. aluminum c. steel d. copper

18. What kind of season has the most leaves falling from trees?

a. summer b. spring c. winter d. autumn

19. Which government agency monitors and issues warnings on volcanic activites?

a. PAGASA b. BFM c. DFA d. PHIVOLCS

20. How will you describes the heart?

a. It is an inflexible organ b. It is a hollow muscular organ. c. It works like a pump. d. both b and c

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Related words used:

• Science
• Health
• Human body
• Matter
• Space
• Organism