2025-2026 Practice Test with Answers – LS 2 Scientific and Critical Thinking Skills Elementary

Direction: Choose the letter of the correct answer.

1.     Which of the following is an example of physical change?

A. rusting of iron

B. cutting of paper

C. souring of milk

D. digesting of food

2.     In 1991, Ormoc Leyte province experienced a major landslide that caused great damage to crops, livestocks, houses, and killed many people. What human activity led to this tragic incident?

            A. mining

            B. garden

            C. reforestation

            D. deforestation

For item 3

 

3.     Balls A and B are similar in size and material. Ball B is stationary, while ball A is rolling on the floor towards Ball B. What would happen if ball A hits ball B?

            A. Ball B would start spinning.

            B. Ball B would remain stationary.

            C. Ball B would move in the same direction as Ball A.

            D. Ball B would move in the opposite direction of Ball A.

4.     If Jean plans to go to Baguio City, what should she bring with her to cope with the weather?

            A. sweaters

            B. sunglasses

            C. shortpants

            D. sleevelessshirts

5.     Instead of throwing away old clothes, Victoria cut them into pieces and sewed them to get her as cleaning rags. What waste management method did she apply?

            A. reuse

            B. reduce

            C. recycle

            D. remake

6.     In making pickled papaya, vinegar with an active acid content of at least 5% is appropriate as a preservative. When this type of vinegar is not available, what other kind of vinegar can be used?

            A. Boiled vinegar – brine solution

            B. Mixture of two kinds of vinegar

            C. Any vinegar found in the market

            D. Rice wine vinegar with less than 5% acetic acid.

7.     Waste disposal in the community, such as throwing away garbage anywhere, is a common problem. Which of the following can be considered in this situation?

            A. if waste disposal in the community is not solved, this may lead to lung disease.

            B. If waste disposal in the community is not managed well, the people will be

healthier.

            C. If the people in the community know about recycling programs, there will be air

pollution everywhere.

D. If the people in the community are not educated about waste disposal, this will not affect nearby communities.

8.     Lava and ash from volcanic eruptions can bring destruction to surrounding villages. They also provide valuable nutrients for the soil. Making it fertile for future planting. Which of the following can be hypothesized from this information?

            A. Volcanic eruptions are more destructive than constructive.

            B. Volcanic eruptions are harmful; therefore, cannot improve a village.

            C. Volcanic eruptions are so destructive that the positive impact can be ignored.

            D. Volcanic eruptions are destructive but can help a village become productive.

9.     Renato has observed that in their barangay, many residents do not segregate their garbage. They throw these in the street corners where they pile up and rot. There have been incidents of children’s diseases reported in the area. Which of the following statements could  Renato make as a basis for his proposal on proper waste disposal?

A.    If children’s diseases are not serious, waste disposal is just a family issue.

B.    If there is proper waste segregation, all kinds of diseases will be prevented.

C.    If proper waste disposal is practiced, there will be less cases of children’s diseases.

D.    If health measures are practiced while traveling, there will be fewer cases of communicable diseases.

10.  What kind of plants grow on the ground, such as potatoes, sunflowers, and daisies?

A.    Aeriel

B.    Aqueous

C.    Terrestrial

D.    Herbaceous

For item 11

I.                Marsupials: kangaroo, koala

II.              Monotremes: platypus, spinyaneater

III.            Placental: dogs, bats

 

11.  The grouping above shows different types of animals based on how their babies develop. Which groups show correct classification?

A.    I and II only

B.    I and III only

C.    II and III only

D.    I, II, and III

For item 12

I.                Animals take oxygen through the process of respiration.

II.              Plants release oxygen into atmosphere as a by-product of photosynthesis.

III.            Carbon dioxide is released by animals and used by plants for photosynthesis.

IV.            Animals then breakdown sugars and other food substance to produce energy.

 

12.  The steps in the oxygen and carbon dioxide cycle are given above. Which of the following shows the correct sequence of steps in the cycle?

A.    I, II, III, IV

B.    II, I, IV, III

C.    III, I, II, IV

D.    IV, III, II, I

13.  Contributions of science in improving the quality of life can be seen and experienced in everyday living. Which of the following does NOT enhance the quality of life?

A.    Shortening of life expectancy

B.    Access to a variety of mobile phones

C.    Different types of air conditioner to choose from

D.    Discovery of new medicine for previously incurable diseases

14.  Soil is formed through the process of rock weathering. Weathering is the breakdown of rocks into smaller pieces when in contact with environmental factors and living organisms. To describe further, rocks turned into soil through

A.    The effects of animals only

B.    The absence of heat and rain

C.    The action of non-living things

D.    The action of heat, rain, and wind

For item 15

15.  Cecilia is going to have a baby soon. Based on the observable characteristics shown in the illustration above, what might their baby look like?

A.   

B.   

C.   

D.   

16.  The Philippines, particularly the Luzon area, has been preparing for the Big One. It is an earthquake predicted to hit the country with an estimated magnitude of 7.0. Which does NOT describe the importance of hazard map during a disaster.

A.    It will create panic among the people.

B.    It will increase preparedness during disaster.

C.    It will warn people about the occurrence of disaster.

D.    It will help identify safe locations during disaster

For item 17

17.  Which of the following shows the correct sequence of the stages illustrated above in the life cycle of a butterfly?

A.    1, 3, 2, 4

B.    1, 3, 4, 2

C.    4, 2, 3, 1

D.    4, 3, 2, 1

For item 18

I.                Estrogen increases in the preparation for the release of egg

II.              If the egg does not become fertilized, the lining of the uterus breaks down into blood, tissue and fluids causing menstruation.

III.            Menstruation lasts from about three to five days.

IV.            When the follicles of the ovary become mature, it releases an egg.

 

18.  The menstrual cycle is the regular natural change that occurs in females every month. Which of the following is the correct order of the stages listed above in menstrual cycle?

A.    I, II, III, IV

B.    I, IV, II, III

C.    II, III, IV, I

D.    IV, I, II, III

19.  Science and technology play a major role in performing a task faster and more easily. Which of the following does NOT show easier and faster work at home?

A.    Cooking with the use of charcoal stove.

B.    Cooking by the use of pressure cooker.

C.    Cleaning with the uses of vacuum cleaner.

D.    Washing clothes with the use of washing machine.

For item 20

 

20.  Which of the phrases given above describes a person who is healthy?

A.    1 and 2 only

B.    3 and 4 only

C.    1, 2, and 3 only

D.    2, 3, and 4 only

21.  Which of the situations below shows progress in communication technology?

A.    Joe presents his report using Manila Paper.

B.    Rosalinda greets her son a happy birthday through video call.

C.    Teacher Rey draws the hydrogen cycle on the board for his lesson.

D.    Anna lists down the lyrics of her favorite song while listening to the radio.

22.  Dan experienced headache for three days, so he decided to buy over-the-counter medicine like paracetamol which is an analgesic. What would be his best reason for buying the medicine?

A.    Advice from his friend.

B.    Cheapest medicine for headache.

C.    Previous prescription by his doctor.

D.    Available in store near his house.

23.  Mila felt dizzy, so she consulted a doctor who recommended shae have a somplete blood count (CBC) examination. The results of the laboratory test in an accredited diagnostic center showed that Mila had a low red blood cell count. The doctor advised her to take vitamins rich in iron. What is the basis of Mila’s medicine?

A.    Result of examination

B.    Home remedy from the internet

C.    Neighbor’s advice according to experience

D.    Advice of the doctor according to her CBC result

For item 24

24.  “Pianggang Pinoy” represents the healthy food plate for Filipinos. How does the plate given above compare to a balanced meal?

A.    The food on the plate contains protein, vitamins and minerals.

B.    The food on the plate does not contain carbohydrates and minerals.

C.    The food on the plate does not contain carbohydrates, protein, and minerals.

D.    The food on the plate contains carbohydrates, protein, vitamins, and minerals.

25.  Many animals are now considered endangered. The Philippine eagle is one of them. Which of the following is the reason for this?

A.    There is overly polluted air.

B.    New species have been introduced.

C.    Some people consider them exotic food.

D.    There is habitat loss due to deforestation.

26.  One piece of evidence that light travels in a straight path is the formation of a shadow. Which statement is true about shadow?

A.    Shadow appears in total darkness.

B.    Light bounces back when hitting an object.

C.    Shadow results when an object blocks the light

D.    Light fills up all the spaces after hitting an object.

27.  According to studies on gender equality, one finding states, “Boys are still left behind in basic education.” This is due to poverty, as more males drop out for work. What can be inferred from this?

A.    Boys and girls are now enjoying equal rights.

B.    Boys and girls do not enjoy equal opportunities in education.

C.    Boys’ rights, according to the Equality Act, are now practiced.

D.    Boys are now lagging behind the girls in all levels of education.

 

Answers

            1. B                 2. D                 3. C                 4. A                 5. C                 6. B

            7. A                 8. D                 9. C                 10. C               11. D               12. C

            13. A               14. D               15. B               16. A               17. D               18. B

            19. A               20. C               21. B               22. C               23. D               24. D

            25. D               26. C               27. B