LS 2 Science Flashcards
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
(D) from pencil to manual typewriter
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
(C) emphysema
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
(A) healthy community
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.
(D) The moon is reflecting different amounts of light due to the alignment of the Sun and Earth.
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.
(C) The rat population will increase while corn population will decrease.
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.
(A) Tsunami may be generated.
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.
(A) Integrate drug education in the curriculum.
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.
(B) Make cleaning rags out of them.
A community living in a coastal area is expected to get their resources through ___________.
(A) mining
(B) hunting
(C) fishing
(D) farming
(C) fishing.
Using the information from the table above, how can Elisa prevent her family members from being victims 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.
(B) Cook food according to proper directions.
Although sex education is already integrated in the curriculum, early pregnancy is one of the major reasons for the increase of drop-out rate in schools. What is the best alternative way to minimize, if not solve this problem?
(A) Promote family planning.
(B) Separate boys from girls in school.
(C) Regulate sex-related posting in social media.
(D) Strengthen values education in the curriculum.
(A) Promote family planning.
The population of the Philippines is projected to soar to 117,260,000 by 2024. An effort to curb this exponential growth of population is RA 10354 informally known as Reproductive Health Law. A NEGATIVE result of overpopulation in the country would be
(A) increased biodiversity
(B) minimized carrying capacity
(C) satisfied basic human needs
(D) overexploited natural resources
(D) overexploited natural resources
Mr. Isidro is planning to build a new house for his family. For the construction of the iron fence, Mr. Isidro must make sure that the constructor will do the following EXCEPT
(A) use galvanized metal
(B) apply protective coating
(C) limit the number of bars
(D) consider the distance from the ground
(C) limit the number of bars.
One of the issues the global community is facing today is the shortage of food, which is caused by various factors such as human activities, natural disasters, and even climatic change. What is the best possible solution to address this issue?
(A) If people will control their activities, they can prevent food shortages.
(B) If people are prepared for climatic change, they can prevent food shortages.
(C) If people were able to manage agricultural land properly, food shortages could be prevented.
(D) If people can predict the natural disasters, they can prepare and store food to prevent food shortages.
(C) If people were able to manage agricultural land properly, food shortages could be prevented.
The Malampaya gas field is a deep-water power reservoir in Palawan, supplying three power plants in the country. It delivers up to 20% of the country’s electricity requirements, using indigenous sources of natural gas. In 2017 the Malampaya gas field was shut down to improve its facility. What might happen to the energy supply of the country if Malampaya runs out of gas?
(A) There may be an increase in the cost of gas.
(B) There will be a shortage of gas supply.
(C) It may be necessary to import gas.
(D) All of the above.
(D) All of the above.
Life is easier and more enjoyable due to faster communication made possible through mobile phones and the internet. What conclusion can be derived from the given statement regarding the new developments in communication technology?
(A) They protect privacy.
(B) They are always reliable.
(C) They destroy relationships.
(B) They are always reliable.
Volcanic eruption is a natural disaster which has been both beneficial and harmful, especially on the economic status of the affected community. What can be deduced from this?
(A) Volcanic eruption has no impact on the economic status of the people in the community.
(B) Volcanic eruption has a great impact on the economic status of the people of the community due to its occurrence.
(C) Volcanic eruption can decrease the economic status of the people in the community because they will be depressed.
(D) Volcanic eruption can increase the economic status of the people in the community, if they reuse volcanic materials.
(D) If there is shortage in energy, then alternative sources of energy should be harnessed.
Animals are classified according to structure of the body, food they eat, type of reproduction and habitat. Which grouping of animals is appropriate according to their habitat?
(A) rat, dog, snake
(B) horse, dolphin, tiger
(C) monkey, tarsier, koala
(D) shark, sea horse, elephant
(C) monkey, tarsier, koala.
Which of the following compounds exhibit ionic bonding?
(A) NaCl
(B) CH3
(C) HCl
(D) H2O
(A) NaCl
The muscular system and skeletal system coordinate to support and move the body. Which structures of the two systems work together to perform their functions?
(A) joints and cartilages
(B) brain and spinal cord
(C) bones and muscles
(D) tendons and ligaments
(C) bones and muscles.
The levels of biological organization are given above. Which of the following is the correct order if they are arranged from smallest to largest?
(A) I, II, III, IV, V
(B) II, IV, V, I, III
(C) III, V, I, II, IV
(D) V, IV, III, II, I
(B) II, IV, V, I, III
The visible light is the only energy that can be seen in the form of color. Which of the following gives the correct arrangement of colors from the most to the least amount of energy they carry?
(A) Blue, green, red, violet
(B) Green, red, violet, blue
(C) Red, green, violet, blue
(D) Violet, blue, green, red
(D) Violet, blue, green, red
In which sequence would the events below happen for a lunar eclipse to occur?
I. When the Sun, Earth, and Moon are exactly or very closely aligned.
II. When the Earth is between the Sun and Moon.
III. Usually when the moon is full.
IV. When the Moon passes directly behind the Earth and into its shadow.
(A) I, II, III, IV
(B) II, III, IV, I
(C) III, I, II, IV
(D) IV, II, III, I
(C) III, I, II, IV
Influenza, pneumonia, tuberculosis, typhoid fever, malaria, and hepatitis are all examples of communicable diseases. Which of the following characteristics best describes communicable diseases?
(A) Communicable diseases are infectious.
(B) Communicable diseases pass from one person to another.
(C) Communicable diseases are diseases caused by nutrient deficiency.
(D) Both B and C
(B) Communicable diseases pass from one person to another.
A global health issue, COVID-19, was declared by the World Health Organization. Which of the following statements below are the basic protective measures against the said disease?
I. Wearing a face mask.
II. Washing hands frequently.
III. Applying moisturizer to the skin.
IV. Maintaining social distance from others.
(A) I, II and III only
(B) I, II and IV only
(C) II, III, and IV only
(D) All of the above
(B) I, II and IV only
The country needs technology for disaster preparedness. Which of the following is the most important contribution of the technology?
(A) It helps to locate survivors.
(B) It predicts all kinds of disasters.
(C) It transports relief goods easily.
(D) It gives accurate data regarding natural calamities.
(D) It gives accurate data regarding natural calamities.
Which of the following is true about the importance of the food nutrient cycle?
(A) It regulates the flow of the substance.
(B) It transforms matter from one form to another.
(C) It transfers elements from one place to another.
(D) All of the above
(D) All of the above
The term “phenotypes” refers to the observable physical properties of an organism’s appearance, development, and behavior. Which of the following gives an example of a phenotypic case?
(A) Boy who is bald like his grandfather.
(B) Identical twins having different types.
(C) Girl inherits blue eyes from her father.
(D) Flamingo turns pink from white due to its food intake.
(D) Flamingo turns pink from white due to its food intake.
The diagram above shows the transfer of traits from parent to offspring. What information can be derived from the illustration?
(A) Male inherited traits from female.
(B) Female inherited traits from male.
(C) Dominant traits will be passed on after two generations.
(D) Recessive traits will be passed on after two generations.
(D) Recessive traits will be passed on after two generations.
Based on the map presented above, which municipality is on the permanent danger zone?
(A) Agoncillo
(B) Lemery
(C) Mataas na Kahoy
(D) San Nicolas
(D) San Nicolas
The Philippine Institute of Volcanology and Seismology (PhiVolcS) presents a hazard map for the occurrence of earthquakes and volcanic eruptions to the public. Which of the following states the importance of this map?
(A) It identifies the disaster-prone area.
(B) It gives alternative routes to destination.
(C) It gives travel guide for unfamiliar places.
(D) It predicts the next disaster that will happen.
(A) It identifies the disaster-prone area.
Electrical energy and electrical power are two related quantities. Given the table below, how will you compare electrical energy to electrical power?
(A) The unit for electrical energy is watt while for electrical power it is watt/hour.
(B) Given the same quantity of time, electrical energy is inversely proportional to power.
(C) Electrical power is the product of energy and time while electrical energy is the power over time.
(D) Electrical energy is the rate at which work is done while electrical power is the capacity to do work.
(D) Electrical energy is the rate at which work is done while electrical power is the capacity to do work.
When light passes through the prism, it separates into different colors. Based on the table below, which of the following shows the correct arrangement of colors based on increasing wavelength?
(A) I, V, VI, III, II, IV
(B) IV, II, III, VI, V, I
(C) I, III, II, V, IV, VI
(D) V, VI, III, IV, I, II
The different stages in fertilization are seen above. Which of the following are the correct sequence in the process of fertilization?
(A) I - II - III - IV
(B) II - III - IV - I
(C) III - IV - I - II
(D) IV - I - II - III
(B) II - III - IV - I
Based from the data presented above, which graph correctly illustrates the motion of the vehicle?
A.
B.
C.
D.
D.
Which of the following set/s of statements describe the properties of elements in a periodic table?
(A) Set A
(B) Set B
(C) Both A and B
(D) Neither A nor B
(A) Set A
Science makes our work easier and contributes a lot to our daily living. The development of gadgets, improvement of transportation, invention of ATMs is some of the contributions of science in the field of
(A) education
(B) health
(C) psychology
(D) technology
(D) technology
All animals are classified into two major groups: vertebrates and invertebrates. Which of the following best describes vertebrates?
(A) Animals that have a backbone inside their body.
(B) Animals that have the largest number in the animal kingdom.
(C) Animals that are mostly found in water and have lungs for breathing.
(D) Animals that have long tube-like bodies that are divided into segments.
(A) Animals that have a backbone inside their body.
There are two major processes in respiration: external respiration and internal respiration. How does external respiration differ from internal respiration in terms of organs involved?
(A) External: Blood; Internal: Nerves
(B) External: Heart; Internal: Brain
(C) External: Lungs; Internal: Cell
(D) External: Muscles; Internal: Bones
(C) External: Lungs; Internal: Cell
Which of the following situations shows progress in Science and Technology?
I. A mother with leukemia undergoing stem cell transplant for treatment.
II. A farmer using highly insect resistant crops in planting.
III. A student using video presentation in his report
IV. A scientist using a microscope in a laboratory test.
(A) I and II only
(B) II and III only
(C) I, II and III only
(D) II, III and IV only
(A) I and II only
A science teacher asked her students to write on the board all the diseases that they know. She then rewrote their answers into two groups, as shown above. What will the students infer as the basis for the grouping?
(A) Group 1 are children’s diseases while Group 2 are adults’ diseases.
(B) Group 1 are inherited diseases while Group 2 are lifestyle diseases.
(C) Group 1 are air-borne diseases while Group 2 are food-borne diseases.
(D) Group 1 are infectious diseases while Group 2 are noninfectious diseases.
(D) Group 1 are infectious diseases while Group 2 are noninfectious diseases.
Maria experienced almost a week of cough so she decided to buy an over-the-counter medicine. What expectorant medicine will she buy?
(A) Medicine A, which was advised by her friend.
(B) Medicine B, which was prescribed by her doctor.
(C) Medicine C, which she saw in a commercial.
(D) Medicine D, which was suggested in the pharmacy.
(B) Medicine B, which was prescribed by her doctor.
An earthquake struck Tulunan, Cotabato around 7:34 pm on October 16, 2019. This resulted in seven casualties and more than 200 injured. The earthquake’s reported magnitude of 6.3 was based on the __________________________.
(A) Modified Mercalli Scale
(B) Richter Scale
(C) Saffir-Simpson Scale
(D) Vernier Scale
(B) Richter Scale
Dengue fever is a mosquito-borne tropical disease caused by dengue virus. Philippines was recorded with the highest number of cases and confirmed deaths in Southeast Asia. Based on the graph shown above, which age group among the females has the highest confirmed cases of dengue?
(A) 5 - 9
(B) 10 - 14
(C) 15 - 19
(D) 20 - 24
(B) 10 - 14
Based on the nutrition facts of a noodle product shown above, what part indicates the micronutrient content of the product?
(A) I
(B) II
(C) III
(D) IV
(D) IV
Based on the food pyramid above, what should be the guide for a person’s food intake?
(A) Eat food rich in fats for supper.
(B) Eat food according to one’s appetite.
(C) Eat less protein-rich food than fruits and vegetables.
(D) Eat more vegetables and fruits that are rich in carbohydrates.
(D) Eat more vegetables and fruits that are rich in carbohydrates.
The African Swine Flu (ASF) is often introduced into a herd of pigs by the feeding of uncooked/ undercooked contaminated pork products and can also be transmitted by ticks and blood-sucking insects. The disease is mainly caused by
(A) Ebola virus from fruit bats
(B) bacteria from contaminated food
(C) roundworms from infected animal feces
(D) large virus harbored in domestic or wild pigs
(D) large virus harbored in domestic or wild pigs
Which of the following describes the valuable contribution of science in the improvement of the quality of life?
(A) It helps develop biological warfare.
(B) It explains the different laws of nature.
(C) It promotes advancement in all areas of life.
(D) It gives explanation to the different scientific beliefs.
(C) It promotes advancement in all areas of life.
According to the Intergovernmental Panel on Climate Change, scientific evidence for warming of the climate system is certain. Which of the following are the pieces of evidence of rapid climate change?
I. Warming of oceans
II. Rising of sea levels
III. Declining arctic sea ice
IV. Decreasing of global temperature
(A) I, II, and III only
(B) I, II, and IV only
(C) I, III, and IV only
(D) II, III, and IV only
(A) I, II, and III only
Vehicles A and B are travelling at the same speed down the mountain, with the same degree of slope. Which vehicle(s) will travel farther, assuming that they have shifted into normal gear?
(A) Vehicle A
(B) Vehicle B
(C) Vehicles A and B will travel with the same distance.
(D) None of the above
(A) Vehicle A
The presence of umbra and penumbra during solar eclipse is one of the evidences that light travels in a straight line. This statement is true because of the
(A) reflection made by the sun to the moon
(B) scattered light on the rough surface of the moon
(C) refraction of sun’s light in the water surface of the earth
(D) shadow produced due to the alignment of the sun, moon and earth
(D) shadow produced due to the alignment of the sun, moon and earth
Biotechnology is the use of biology to create useful products that can help solve human problems. An example is the development of highly insect-resistant crops for planting. Which of the following states the importance of biotechnology?
(A) It helps improve human life.
(B) It provides the basic needs of humans.
(C) It complicates the human way of living.
(D) It can provide the best solution to human problems
(A) It helps improve human life.
Based on the illustration above, what possible device might be invented after three (3) years?
(A) All-in-One audio with built-in cellphone, printer and projector
(B) All-in-One cellphone with built-in printer, projector and audio
(C) All-in-One printer with built-in cellphone, projector and audio
(D) All-in-One projector with built-in cellphone, printer and audio
(B) All-in-One cellphone with built-in printer, projector and audio
