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 plantseconomic problem
B. Decrease in marine plantsdecrease in fish population economic problem
C. Increase in marine plantsincrease in fish populationecological imbalance
D. Decrease of fish populatioincrease 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.