LS2 SCIENCE

Question 1

1. Which of the following CANNOT be considered a progress in electronics?
   (A) from air mail to e-mail
   (B) from radio to television
   (C) from newspaper to internet
   (D) from pencil to manual typewriter

Answer 1

D) from pencil to manual typewriter

Question 2

2. Roger started smoking at the age of 14. One day, he experienced difficulty in breathing.
   According to his laboratory results, this is due to over-inflation of tiny air sacs in the lungs.
   His respiratory condition is called
   (A) asthma
   (B) colds
   (C) emphysema
   (D) pneumonia

Answer 2

(D) pneumonia

Question 3

3. Joseph, a high school student, has joined a fraternity known to be using prohibited drugs.
   Since then, he has incurred frequent absences, shown lack of interest in school, and has
   been observed with poor hygiene. If there will be more students like Joseph, which of the
   following might NOT occur?
   (A) healthy community
   (B) interpersonal conflict
   (C) physical violence
   (D) school drop-out

Answer 3

(A) healthy community

Question 4

4. Which of the following statements is true about the changes in the appearance of the moon?
   (A) The moon is getting closer to the earth.
   (B) The moon is increasing speed as it rotates.
   (C) The moon is physically changing in size and shape as it rotates around the Earth.
   (D) The moon is reflecting different amounts of light due to the alignment of the Sun
   and Earth.

Answer 4

(D) The moon is reflecting different amounts of light due to the alignment of the Sun
and Earth.

Question 5

5. The farm of Barrio Masaya was infested with rats which fed on their crop of corn. Also, many
   farmers have been catching snakes to sell their meat in the restaurants. Which of the
   situations will likely happen in the corn and rat populations over time?
   (A) Both populations will increase.
   (B) Both populations will stay the same.
   (C) The rat population will increase while corn population will decrease.
   (D) Corn populations will increase while the rat population will
   decrease.

Answer 5

(C) The rat population will increase while corn population will decrease.

Question 6

6. PAGASA raised Public Storm Warning Signal No. 1 over the province. Which of the following
   is NOT one of the possible effects of this storm?
   (A) Tsunami may be generated.
   (B) Some plants may be uprooted.
   (C) Rice and corn crops may be affected.
   (D) Roofs made of nipa may be damaged.

Answer 6

(B) Some plants may be uprooted.

Question 7

7. Priscilla has a garment shop. Every day she collects a lot of fabric fragments. What is the best
   thing she could do with them, to help in the proper waste management of the community?
   (A) Burn them.
   (B) Make cleaning rags out of them.
   (C) Use them as compost for the garden.
   (D) Collect them and give it to the garbage collector.

Answer 7

(B) Make cleaning rags out of them.

Question 8

8. A community living in a coastal area is expected to get their resources through ___________.
   (A) mining
   (B) hunting
   (C) fishing
   (D) farming

Answer 8

(C) fishing

Question 9

9. Substance abuse involving our youth is one of the most rampant problems faced by the
   government today. Which of the following is the best strategy for the early prevention of this
   problem?
   (A) Integrate drug education in the curriculum.
   (B) Conduct a barangay drug clearing operation.
   (C) Perform an unannounced drug testing to schools.
   (D) Increase awareness regarding the matter through media.

Answer 9

(A) Integrate drug education in the curriculum.

Question 10

10. Using the information from the table above, how can Elisa prevent her family members
    from being victim of foodborne illnesses?
    (A) Cook food in advance for a weekly menu.
    (B) Cook food according to proper directions.
    (C) Set the freezer at lowest on the dial to save electricity.
    (D) Allow a sick family member to handle the food service.

Answer 10

(B) Cook food according to proper directions.