Republic of the Philippines Department of Education Region III SCHOOLS DIVISION OF ZAMBALES Iba, Zambales Tel./Fax No. (047) 602 1391 / (047) 307 2076 E-mail Address: zambales@deped.gov.ph website: www.depedzambales.com POST TEST- EARTH/ LIFE SCIENCE Direction: Choose the answer. 1. Which describes the early life forms on Earth? A. They were unicellular C. they were simple plants and fungi B. They merely occupied the land D. they belong to the family of dinosaurs 2. Soil is formed through weathering of rocks. Which type of rock existed first, starting with the soil formation and the rock cycle. A. Igneous B. metamorphic C. sedimentary D. any of the above 3. What makes the inner core of the earth solid while the outer core liquid? The inner core is A. subjected to a greater pressure than the outer core B. made up of metals while the outer core is not C. of lower temperature than the outer core D. thicker than the outer core 4. When the air temperature in a certain area is high, the pressure is low and the relative humidity is high, it can be expected that: A. The weather will be fair C. there will be thunderstorm B. There will be rain D. there will be a typhoon 5. The Earth’s rotation on its tilted axis gave rise to the occurrence of alternating day and night. What would have happened if the Earth’s axis is not tilted? A. Some places would have just have daytime while others, only night time. B. Some places may have very long nights and very short days while others would have the reverse C. The days and nights throughout the globe would always be of equal length D. The length of day and night would just be the same as when the axis is tilted 6. At high noon, it is refreshing to stay in the water than at the beach because the sand is so hot whereas in the evening it is preferable to stay in the water because the land is cool. This shows that: I. Land cools faster than the water II. Water heats faster than land. III. During daytime the pressure on land is higher than at the water. IV. Land absorbs heat faster than water. A. I and II are correct B. both low C. high for the land; low for the sea D. Low for the land; high for the sea 7. Arrange the jumbled statements given below. Based on the arranged statements, which order of weather elements leads to the development of typhoon? I. Great difference in triggers strong wind movement II. High temperature causes ocean from water to become warm III. Energy from warm water develops a low pressure area (LPA) IV. Continuous wind motion develops a storm A. Temperature; Wind movement; Pressure; Storm B. Temperature; Pressure; Wind movement; Storm C. Pressure; Temperature; Wind movement; Storm D. Pressure; Wind movement; Temperature; Storm 8. A partial solar eclipse can occur only when the: A. Earth is between the sun and the moon. B. Moon is between the Sun and the Earth C. Moon is at right angle with the Earth D. Earth is at right angle with the Sun 9. The following statements EXCEPTone describes Venus as a planet. Which is the EXCEPTION? A. Venus shines brightly because it is covered with clouds that reflect about 80% of the sunlight B. The rotation of Venus is opposite the direction of its revolution C. One day in Venus is longer than a Venus year D. When at the right of the sun, Venus appears as the morning star and as evening star when at the left of the sun 10. Which of the following is true of the color and brightness of a star? A. A blue star means it is very near to us while a bright star means it produces much light B. A red star is a cooler star while a star far from us seems not so bright C. A giant star is a bright blue star while a dwarf is a dull yellow star D. Distance, size and amount of light have nothing to do with the brightness and cooler of the stars 11. The figure below shows the sun, the Earth and the moon at its four positions. Which of the statements below can be explained through the figure? I. II. III. IV. There is no eclipse during quarter phases Only one planet of the moon can be seen on Earth The variations in the apparent shape of the moon at different phases The great difference in the height of the water levels during spring and neap tides A. I only B. I and IV C. I, III and IV D. I, II, III and IV 12. Based on the diagram of the relative position of the sun (S), Earth (E), and the moon (M), at which position is spring tide most likely to occur? I. III . II. A. I only B. IV only C. I and II D. III and IV 13. A duckling requires a high food intake to support its fast rate of growth while a germinating seed slowly takes in the nutrients available at the stored food to sustain its growth. From the situation, it can be inferred that: A. Living things need food to grow B. The food intake of living things depends on their rate of growth C. The rate of growth of living things is affected by its food intake D. The amount of food to be taken in by living things has no relation to its growth but to its size 14. Mrs. Garcia’s bone was diagnosed to be at the first stage of osteoporosis. The best for her to do is to take food rich in: A. Carbohydrates B. Proteins C. minerals D. vitamins 15. What is both a respiratory and excretory organ? A. Skin B. lungs C. kidney D. colon 16. Organisms vary according to what food they eat and how they eat it. Which of the following combinations is NOT true? A. Python; wild pig; movable jaws C. fog; insects; rolled tongue B. Moth; plant parts; proboscis D. bird; insects; beak 17. Which of the following diagram shows interdependence of living things? A. C.Man O2 B. CO2 plants D.Man CO2 O2 plants 18. Global warming is an environmental problem being brought about by activities of human beings that change the quality of air. This may result to the following EXCEPT: A. Extreme rise in temperature due to release of trapped methane gas and glacier retreat B. Having dry season to most parts of the Earth through the years C. Spread of tropical diseases to constant migration of insect D. Rising of sea levels and flooding of coastal cities 19. Which of the following is a chain effect of coral reef destruction? A. Decrease in fish population decrease in marine plantseconomic problem B. Decrease in marine plantsdecrease in fish population economic problem C. Increase in marine plantsincrease in fish populationecological imbalance D. Decrease of fish populatioincrease in marine plant ecological imbalance 20. Your aquarium has clean water. The fishes do not lack the high-protein food. But fishes keep dying. What is the best thing to do? A. Put more plants C. Decrease the number of fish B. Place a powerful aerator D. Move the aquarium to a sunny place 21. Which of the following does NOT happen when the stomata are open? A. The water produced during photosynthesis leaves the leaf B. The oxygen gas produced in photosynthesis leaves the leaf C. The carbon dioxide needed for photosynthesis enters the leaf D. The nitrogen compounds needed for photosynthesis enters the leaf 22. Sterile nutrient agar is placed in each of four sterile Petri dishes. The substances listed below were added to each dish. They were then placed in a warm place for 2 or 3 days. In which dish would NO microorganism be growing? A. Roasted soil, milk C. fresh soil, boiled milk B. Roasted soil, aquarium tank water D. roasted soil, boiled water 23. Reading the labels of two sweetened macapuno bottles, you learned that the content of A has food additives while B has only natural ingredients. Which of the two will you buy? A. Macapuno B because it will not have harmful effect on the body. B. Macapuno A because it will not be spoiled at once. C. Macapuno A because it will be more delicious. D. Macapuno B because it will have a natural taste. 24. You needed 10 ml of water in an activity. If the given measuring instruments are available, which do you have to use? A. 25 ml beaker C. 50 ml beaker B. 25 ml graduated cylinder D. 50 ml graduated cylinder 25. One teaspoon of sugar can sweeten a cup of coffee here on Earth. When at the moon, one will need how much sugar to sweeten a cup of coffee? A. Greater than one teaspoon of sugar C. equal to one teaspoon of sugar B. Lesser than one teaspoon of sugar D. difficult to tell 26. The following describes the process of fertilization I. Zygote divides II. One sperm penetrates the membrane III. Sperms swim towards the egg IV. Nuclei fuse together Which of the arrangement is correct? A. III, II, IV, I B. II, III, I, IV C. III, II, I, IV D. II, III, IV, I 27. Removal of waste is essential in maintaining body functions. Which group of systems help the body remove wastes? A. Digestive, Respiratory and Integumentary Systems B. Digestive, Circulatory, and Excretory Systems C. Digestive, Respiratory and Circulatory Systems D. Digestive, Circulatory and Integumentary Systems 28. When you see bubbles on the soup which had been left on the table for one night, you may infer that; A. The liquid component of the soup is evaporating B. Physical change is taking place in the soup C. The soup is undergoing chemical change D. Air is dissolved in the soup 29. SO2 from burnt fossil fuels react with water in the air forming acid rain. Which is NOT an effect of acid rain in the environment? It may A. Cause chemical weathering C. cause the formation of smog B. Decrease the fish population D. result to the deterioration of buildings/structures 30. Physical change is shown in which of the following situations? A. Salt making C. broiling fish B. Frying egg D. curdling of milk 31. Which sequence illustrates food chain? A. Fish, frog, larvae, algae C. grasses, grasshopper, lizard, hawk B. Trees, deer, rabbit, lion D. grasses, mouse, lion, shrew 32. For the most part, plant and animal cells perform the same essential functions. Which of the following is an exception to this statement? A. Absorption C. Excretion B. Photosynthesis D. Respiration 33. A fossil is the remains of living thing that existed long time ago. All of the following are fossils fuels EXCEPT; A. Oil C. Uranium B. Coal D. natural gas 34. Which of the following is NOT considered a renewable natural resource? A. Soil C. Forests B. Coal D. Water 35. The flash of lightning is seen before the thunder is heard because A. Light travels faster than sound B. The lightning and the thunder are not produced at the same time C. Eyes are more sensitive than ears D. Sound travels better in solids than in air 36. To extinguish a fire in a pan of burning fat, one would place a cover over the pan to A. Add oxygen C. raise the kindling power B. Cut off oxygen D. remove then fuel 37. T he list below contains four changes that can take place in materials: I. A dish breaks II. Water boils III. A light bulb is turned on IV. Papers burns Which of this/these is/ are chemical change/s A. II and IV ONLY C. I only B. II and III only D. IV only 38. Which one of the following is the primary reason why nutritionists advice against cooking vegetables too long? Overcooked vegetables A. Look unappetizing C. have mushy texture B. Lose much of their taste D. loss their vitamin 39. Industrial waste water dumped into rivers and lakes may result in thermal pollution which includes A. Decrease in water temperature, growth of algae, increase in oxygen, loss of aquatic life B. Decrease in water temperature, decrease in algae, increase of oxygen, rise of aquatic life C. Increase in water temperature, decrease in algae, decrease in oxygen, rise of aquatic life D. Increase in water temperature, growth of algae, decrease in oxygen, loss of aquatic life 40. In the last 250 million years the land areas of the Earth have been dominated, in turn, by three different classes of vertebrates. In what order did the three classes achieve dominance? A. Reptiles, mammals, amphibians B. Birds, mammals, amphibians C. Amphibians , reptiles, mammals D. Mammals, amphibians, birds 41. The following effects depend on the relationship of the Earth to the sun. I. The change of seasons II. Differing length of daylight throughout the year III. Differing level of insulation throughout the year Which of these effects depends on the fact that the Earth’s orbit is tilted at an angle of 23.5 degrees with respect to the plane if its orbit? A. I only C. I and II only B. II only D. I, II and III 42. A number of morbid conditions may have been associated with cigarette smoking: I. Coronary disease II. Cirrhosis of the liver III. Emphysema IV. Lung cancer V. Severe depression Which of these are now known to result from smoking? A. I and II only C. I, III and IV only B. II and IV only D. II, IV, and V only 43. The water cycle includes all of the following EXCEPT A. Precipitation C. clouds B. Condensation D. air pressure 44. Igneous rocks is produced by A. Consolidation of sediments C. pressure from earthquakes B. Volcanoes only D. solidification of magma and lava. 45. Which of the following statements about energy is NOT correct? A. It can be measured by the work done by a system. B. It cannot be made. C. It can be converted from one form to another. D. It is produced from nothing by a generator. 46. The science class wants to measure wind velocity on a daily basis. Which one of the following instruments should be used? A. Anemometer B. Barometer C. Hygrometer D. Thermometer 47. The air we breathe consists of several gases. The order, from most to least abundant, of the following three gases is A. Nitrogen, carbon dioxide, oxygen B. Oxygen, nitrogen, carbon dioxide C. Oxygen, carbon dioxide, nitrogen D. Nitrogen, oxygen carbon dioxide 48. In his theory of natural selection, Charles Darwin set out to explain A. How we inherit eye color from our parents B. The relationship between fossils of extinct organisms and living plants and animals C. Why the forms of life change over long periods of time D. How our environment has undergone changes 49. Fossil-bearing rocks have been formed most frequently by layers of A. Silicates C. sediments B. Lava D. amber 50. During an experiment with fruit flies to determine the effect of radiation, students used three groups of flies. A local radiologist exposed group 2 to 1000 roentgens of radiation and group 3 to 1500 roentgens. Why did he lost expose group 1 to radiation also? A. Group 1 had already been exposed B. Group 1 was needed for breeding since the exposed fruit flies might become sterile C. Group 1 represented the normal or control group D. Group 1 will be exposed after the first batch of offspring is hatched.