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LS 2 : SCIENTIFIC AND CRITICAL THINKING SKILLS
Directions: Read each item carefully and the then select the correct answer.

	Ana	Berto
Diet	Fruits; Vegetables; meat	Poultry, Meat, Baguio vegetables
Drinks	Purified water	Fresh fruit juice
Hobby	Reading	Playing computer games
Sleeping pattern	7-8 hours a day	8-10 hours a day

1. Which of the following diseases can be acquired by Berto?
A. Marasmus
B. Kwashiorkor
C. Hypertension
D. Acidosis

2. Which of the following processes involve teamwork between the respiratory and circulatory systems?

I. Red blood cells get oxygen and distribute it to the different body parts

II. Diaphragm enables air to come in and out of the body by contracting and relaxing.

III. Villi in the small intestine absorb nutrients, Which are then transported to different body parts.

IV. Carbon Dioxide produced by cells enters the capillaries and transported to the lungs

A. I only
B. I and III
C. III only
D. IV only

3. Electric cables are primarily made of copper. Which of the following properties makes copper a suitable electric cable?

I. Can be flattened II. Shiny III. High Density IV. Good Conductor

A. I only
B. I and IV
C. III only
D. II and III

For Item 4, study the properties of two compounds presented in the table:

Compound A	Compound B
Dissolves in water	Does not dissolve in water
Does not easily dissolve in alcohol	Dissolves in alcohol
Exists as solid at room temperature	Exists as liquid or gas at room temperature
Conducts electricity when dissolved in water	Does not conduct electricity

4. Which set of properties reflect that of the table salt?
A. Compound A
B. Compound B
C. Both Compounds A and B
D. Table salt’s characteristic is in between that of compounds A and B.

For Item 5, study the characteristics of the two volcanoes.

	Volcano A	Volcano B
Height	About 8,000 feet	˃8 000 feet
Shape	Tall and Steep	Tall and Broad
Eruption	Has recently erupted	Had erupted in the distant past

5. Which Volcano is active?
A. Volcano A
B. Volcano B
C. Both Volcanoes are active
D. Both Volcanoes are inactive

6. Which of the sign that a volcano may erupt?

I. Earthquakes

II. Landslides

III. Emission of gases and steam

IV. Growth of Plants and animals near the Volcano

A. I only
B. I and III
C. III only
D. II and IV

For items 7-8, study the illustration below.

7. Which of the following is true about constellations?
A. Constellations revolve around the sun
B. The sun revolves around the constellations
C. The Earth revolves around constellations.
D. Constellations stay on the same place on space.

8. The following observations were noted at different hours during the night.

A	B	C
Stars moved from east to west across the sky.	Stars set along a diagonal, from south to north.	Stars traced counter-clockwise circles, centered on a point near the North Star (Polaris)

Which of the following statements is correct?
A. Stars do not moved at all. It is the earth that is moving.
B. Stars move to form different patterns as the earth revolves around the Sun.
C. Stars, like the Sun, rise in the east and set in the west.
D. Some stars moves across the sky over the night time while others don’t .

9. Planets, moon, and stars are all heavenly bodies. Which of the following makes a star different from the other heavenly bodies?
A. Rotation of Axis
B. Light Production
C. Size
D. Mass

For Item 10, study the convection currents in the mantle illustrated below. (movement of the layer of the earth)

I. Movement of crust

II. Formation of volcano

III. Earthquakes

IV. Floods

10. Which are the effects of convection currents A and B on the crust?
A. I and III
B. I, II and III
C. II and III
D. II, III and IV

For Item 11, read the given case.

A typical fire extinguisher tank contains Carbon Dioxide (CO2) under high pressure. When CO2 is released and directed to the fire. It attacks the fire by displacing oxygen in the combustion reaction

11. Why is that CO2 should be under high pressure?
A. To increase its temperature
B. To decrease its temperature
C. So that CO2 can moved very fast when released
D. So that CO2 can expand very fast and cool the fire when released.

12. Which of the following evidence supports the Plate Tectonic Theory?

I. Fossils found in big rocks located far apart

II. Different shape of coastlines of different continents

III. Magnetic field orientation in layers of rocks

IV. Earthquake and Volcanic eruptions

A. I and II
B. I and III
C. III and IV
D. II and IV

For Items 13-14 study the diagram below (layers of the earth)

I. Convection Currents in this layer make the plates move.

II. Metals in this region are melted due to high temperature

III. Metals in this region are squeezed tight due to great pressure

IV. Consists of the crust and the upper mantle.

13. Which of the statements describe the mantle?
A. I only
B. I and IV
C. II only
D. II and III

14. Which layer is described by statement III?
A. Crust
B. Mantle
C. Outer Core
D. Inner Core

For Item 15., study the Illustration below. (male reproductive organ)

I. It is a loose bag of skin divided into two containers of testicles

II. Produce sperms and male hormones

III. It is a tube attached to the testes.

IV. It carries both urine and semen

15. Which of the above statements describes the testes?
A. I only
B. I and IV
C. II only
D. II and III

For Item 16, analyze the information about two families given below;

	Family A	Family B
Number of Children	5	10
Combined Monthly Net earnings	P20,000.00	P20,000.00
Daily Budget	500	500
With other family members	1	1

16. Which of the families live a better life?
A. Family B because they have more members to help one another.
B. Family A because they have less mouth to feed.
C. Family B because they have more tax exemption in their combined income at the end of the year.
D. Both families live a better life because they have the same net monthly income.

17. Which of the following occurs when two Tectonic Plates move away from each other?

I. Formation of Volcanoes

II. Occurence of Earthquake

III. Volcanic Eruption

IV. Mountaion Formation

A. I and III only
B. I, II and IV
C. II, III and IV
D. I and II only

For Items 18-19, study the map of the global distribution of earthquakes (maps)

18. In which of the following regions do earthquake frequently occur?
A. In narrow belts around the world
B. Far away from the Pacific Ring of Fire
C. Along the west coat of Asia
D. Along the west coast of North and South America

19. Which of the Following is TRUE concerning earthquakes and volcanoes?
A. Earthquakes usually occur in the same location as volcanoes.
B. Volcanoes form away from earthquake zones.
C. Earthquakes occur with less volcanic activity.
D. The occurrence of earthquake and volcanic eruption are two different phenomena.

For Items 20 and 21 study the menstrual cycle feedback and mechanism below.

I. Progesterone/Testosterone

II. Follicle Stimulating Hormone

III. Positive Feedback Mechanism

IV. Negative Feedback Mechanism

20. What regulates the secretion of hormone from the endocrine gland?
A. I only
B. II and IV
C. IV only
D. I and III

21. What hormone stimulates the ovaries to secrete estrogen? A. I only
B. III and IV
C. IV only
D. I and III

For Items 22-23, read the given case.

Walking a short distance from home to office daily. Dino sweats a lot so he brings towelette

22. Which of the following explains his sweating considering that he is a normal boy?
A. His body b ecomes strong by walking.
B. His body becomes fatigue.
C. His body releases heat.
D. He needs cool air.

23. Does his sweating help him?
A. Yes, because his body releases heat.
B. No, because sweating leads to bad odor.
C. Yes, because excess water from his body is released as sweat.
D. No, because water is lost from his body which will result to skin dryness.

24. The population of an endangered species can be increased by breeding in captivity of the remaining individuals. However , this technique may also lead to species extinction. Which of the following is the negative effect of this breeding?
A. Breeding a short period of time reduces genetic diversity
B. Breeding a short period of time reduces genetic diversity
C. Breeding over a short period of time produces a different species.
D. Breeding over a short period of time increases fertility.

For Item 25, analyse the given case.

Mark's rice fields are infested by rats. He was advised to use any of the following techniques:

I. Use pesticide (rodenticide).

II. Use nets in catching rats.

III. Raise cats to catch rats.

IV. Burn the whole fields after the harvest season

25. Which of the techniques can be effective in getting rid of the rats without harming farm insects and the environment?
A. II only
B. II and IV
C. III only
D. III and IV

LS 3 : MATHEMATICAL & PROBLEM SOLVING SKILLS
26. Mang Tony needs 124 plants in a row. If there are 15 rows and each plant costs Php85.00, how much will he spend in all for the plants?
A. Php18 600.00
B. Php85 000.00
C. Php136 000.00
D. Php158 000.00

For Item 27 below is the list of menu in a school canteen.

Menu
Rice	Php 8.00
Pancit	Php 15.00
Spaghetti	Php 20.00
Menudo	Php 40.00
Sinigang	Php 40.00
Pakbet	Php 30.00
Softdrinks	Php 10.00
Water	Php 15.00

27. Ana and her friend Lucy went to the canteen and ordered two cups of rice, one serving each menudo and pakbet, and two bottles of water. If Lucy gave Php150.00 to the cashier, how much change did she receive?
A. Php 16.00
B. Php 20.00
C. Php 34.00
D. Php 40.00

28. Mang Andy has a poultry in his backyard. He bought 10 ducklings at Php8.00 each He spends Php200.00 each week for the feeds. In 6 weeks, the ducks can be sold already. How much is his total expenses before the ducks can be sold?
A. Php 800.00
B. Php 820.00
C. Php 1200.00
D. Php 1,280.00

29. Alvin ordered two hamburgers and a soda for lunch. A hamburger costs Php20.00. How much did he pay for lunch?
A. Php 45.00
B. Php 50.00
C. Php 65.00
D. Php 70.00

30. There were 6452 enrollees at Buhay High School last year and 4956 this year. Of these data 3600 are first year students. Which of the following can tell us the number n of students who are NOT in first year?
A. (6 452 + 4 956)-3 600=n
B. (6 452 – 4 956)+3 600=n
C. (6 452 + 4 956)+3 600=n
D. (6 452 – 4 956)-3 600=n

31. Last Weekend , Dan earned Php75.00 for selling newspaper on Saturday and Php60.00 for selling Sampaguita on Sunday. He spent Php80.00 for his school hands. To find the amount left from his earnings. (E), which of the following equations is CORRECT?
A. E=(75+60)-80
B. E=(75-60)-80
C. E= 80 + (75-60)
D. E=80-(75-60)

32. Ella weighs 2 ¹⁄₄ times more than her son. If her son weighs 30 ¹⁄₂ kg, about how many kilograms does Ella weigh?
A. 32 ¹⁄₆ kg
B. 32 ³⁄₄ kg
C. 60 ¹⁄₈ kg
D. 68 ⁵⁄₈ kg

33. Janice answered 100 questions in Mathematics and Science. If 2/5 of the questions involve Mathematics, how many are Science questions?
A. 20
B. 35
C. 40
D. 80

34. Gina brought the following items from the mini-store.

pad paper	Php 16.50
notebook	Php 8.75
folder	Php 7.25
bond paper	Php 36.25
colored paper	Php 105.50

How much change did she gave a Php200.00 bill to the store owner?
A. Php 15.50
B. Php 20.75
C. Php 25.75
D. Php 32.25

35. Aling Ester bought 4 125 bananas and distributed it equally to 5 different stores. If each banana costs Php 7.50, How much did each store pay?
A. Php 5,830.45
B. Php 6,187.50
C. Php 9,625.00
D. Php 30,937.50

36. Cloe brought 40 cookies to school for her birthday.Five students wanted two cookies each. A new student came and wanted three cookies. Then, two of the kids gave their two cookies back. How many cookies did Cloe had left to pass out?
A. 20
B. 23
C. 30
D. 32

37. Ana is saving money to buy a new bag. On Monday, she saved Php 60.00 and doubled that amount on Tuesday and Wednesday, Her teacher gave a project which costs her Php 30.00. On Friday she saved Php 40.00. But unfortunately, she lost her wallet on Saturday with Php 25.00 in it. How much is her total savings?
A. Php 145.00
B. Php 165.00
C. Php 405.00
D. Php 415.00

38. Irish had Php 7,500.00 in her savings account. Last Monday , she deposited Php2 500. On Tuesday , she withdrew Php 1,200.00 to pay for her bills. How much is her current balance?
A. Php 6,200.00
B. Php 8,800.00
C. Php 11,200.00
D. Php 10,000.00

39. From their house. Rona walked 3 km east while Ben walked 4 km south. How many kilometres are they apart?
A. 5
B. 7
C. 12
D. 19

40. Daisy is interested in finding the circumference of the given circle below? How much she will compute for its value?

A. c=2 x 27.1 cm
B. c=2 x 54.2 cm
C. c=3.14 x 54.2 cm
D. c=3.14 x 27.1 cm

41. A rectangular table with length 250 dm and width of 150 dm needs to be painted. What is the area of the table to be painted?
A. 400 dm
B. 800 dm
C. 26 500 dm
D. 37 500dm

42. What is the area of the triangular figure below?

A. 6 square units
B. 7 square units
C. 12 square units
D. 15 square units

43. A rectangular box is 5 cm. Long. 3 cm wide and 4 cm high. Find its surface area
A. 12 cm²
B. 60 cm²
C. 94 cm²
D. 180 cm²

44. A swimming pool whose dimensions are 10 m by 3 by 6 m needs to be filled with water for the pool party. How many cubics meters of water will it need?
A. 19
B. 116
C. 180
D. 200

45. Cindy plans to buy a new cellphone. She already saved Php 1,040.00. If the cellphone costs Php 8,000.00, What percent of the total price was her savings?
A. 13%
B. 15%
C. 25%
D. 30%

46. The Health Center in Frisco listed down 1 524 patients in a month. Based on the data from the City hall, this is 30% of the total patients in the whole district. How many patients were there in the district within a month?
A. 1 554
B. 5 080
C. 26 430
D. 45 720

For Items 47-49. The budget allotted by the government to Barangay Laging Handa is Php2 000 000.00 for one year as presented in the graph below.

47. Which item in the budget is allotted the least amount?
A. Salary
B. Projects
C. Expenses
D. Contingency

48. What percent of the budget is allotted for projects?
A. 5%
B. 20%
C. 25%
D. 50%

49. How much allotted for Salary?
A. Php 1 000 000.00
B. Php 500 000.00
C. Php 400 000.00
D. Php 100 000.00

50. In a map that used a scale of 1 cm : 20 km, what is the distance in centimetre between Manila and Cavite, if Manila is 180 km. away from Cavite?
A. 6 cm
B. 9 cm
C. 200 cm
D. 360 cm