- Earth is the only planet that gave rise to complex life. - Major human activities cause destruction to Earth's subsystems through a boomerang effect. As a student, the best recommendation is to start making changes from yourself by reducing pollution. - Sedimentary rocks usually form in bodies of water.

1. Science NAT Review
Teddy Catimbang

2. Which refers to the only planet in the
solar system that gave rise to complex
life?
A.Earth
B.Mars
C.Mercury
D.Venus

3. Major human activities cause great destructions on
Earth's subsystems. Since energy and matter is cycled
within the spheres and being part of the system,
these harmful activities bring forth destruction to us
in a boomerang effect . One example of this is the
Global warming. As a student, what recommendation
can you give to solve this problem?
A. Report the violators to the United Nations.
B. Just ignore and continue your daily routines.
C. Be active in advocating change by rallying
outside government hall.
D. Start the change from yourself by not
contributing pollution to the environment.

4. Which of these areas do most sedimentary
rocks usually form?
A. Volcanoes
B. Mountains
C. Plain Lands
D. Bodies of Water

5. Which of the following correctly
describes physical weathering?
A. Rust changes the color of the rock.
B. A carabao steps on and crushes a
limestone.
C. A year of acid rain deforms a rock
monument.
D. Running water transports rock to
other places.

6. Which of the following terms refers
to the thickest layer, made mostly
of iron, magnesium, and silicon,
that is dense, hot, and semi-solid?
A. Core
B. Crust
C. Lithosphere
D. Mantle

7. Which of the following statements correctly
describes inner core and outer core?
A. The inner core is extremely dense which made up of solid iron
and is intensely hot , while the outer core is the thickest layer,
made mostly of magnesium and silicon.
B. The inner core is the thickest layer, made mostly of
magnesium and silicon, while the outer core is made from iron
and nickel in liquid form, heated largely by radioactive decay.
C. The inner core is extremely dense, which made up of solid iron
and is is intensely hot, while the outer core is made from iron
and nickel in liquid form, heated largely by radioactive decay.
D. The inner core is made from iron and nickel in liquid form,
heated largely by radioactive decay, while the outer core is
extremely dense which made up of solid iron and is intensely
hot.

8. Which of the following combination of factors
can change pre-existing rocks into new forms?
A. Color, shape, and texture
B. Minerals, color, and temperature
C. Texture, temperature and chemically- active
fluids
D. Temperature, pressure and chemically- active
fluids

9. You watched a video of a lava flow when suddenly
you got curious about how crystal formation
happens. You also observed that small and large
crystals can be formed from a lava flow. Based on
this observation, where would you expect to find
the largest crystals in a lava flow?
A. At the center of the flow.
B. Near the bottom of the flow.
C. Near the top surface of the flow.
D. The crystals would have the same grain size
throughout the flow.

10. You were given a granite sample and tasked to
describe just by looking and touching it. Which of
the following statements below will best describe a
granite based on its physical appearance?
A. Light- colored, fine- grained igneous rock rich
in silica
B. Light- colored, fine- grained igneous rock poor
in silica
C. Light- colored, coarse- grained igneous rock
rich in silica
D. Light- colored, coarse- grained igneous rock
poor in silica

11. You are walking along a flat rock surface. You
discover that as you walk further, the age of
the rocks decreases until you reach the
middle of the surface, then for some reason,
they get older again. What structure have you
just passed over?
A. Synline Fold
B. Anticline Fold
C. Monocline Fold
D. Overturned Fold

12. A geologist used relative dating methods to guess
that an igneous rock sample is between 1 million
and 5 million years old and was curious about its
exact age. Will using carbon-14 in determining the
age of the rock be helpful?
A. Yes, because the rock sample contains traces of
carbon in it.
B. Yes, because carbon-14 is widely used by scientists in
absolute dating.
C. No, because the half-life of carbon-14 is too short for
the age of the rock sample.
D. No , because it is not sure whether dead bodies of
organisms are present in the sample.

13. A geologist found a dinosaur fossil and wants
to estimate what period that dinosaur
existed in the past . The geologist measured
the ages of the rocks beneath and above the
fossil. What dating technique he/she is about
to use?
A. Cross Dating
B. Relative Dating
C. Geologic Dating
D. Absolute Dating

14. What information is generally
shown in the geologic time scale?
A. The branches of Geology
B. The Geologic history of Earth
C. The Geologic features of the Earth
D. The Geologist with significant contributions

15. Which hazard may happen if loosely-
packed and water-logged sediments at
or near ground surface lose strength
during earthquakes?
A. Eruption
B. Fire
C. Liquefaction
D. Tsunamis

16. A barangay located near the sea
experienced a magnitude 8.0
earthquake. What hazard are the
residents most exposed to after this?
A. Eruption
B. Fire
C. Liquefaction
D. Tsunami

17. What term refers to an extreme
natural phenomenon in Earth's crust,
like earthquakes and volcanic
eruptions, that may cause danger to
life and property?
A. Geological Hazard
B. Biological Hazard
C. Technological Hazard
D. Hydro meteorological Hazard

18. If you live on a hillside in a land-locked
area with an active volcano nearby,
which of following phenomena does
NOT bring you hazard?
A. Tsunami
B. Landslide
C. Earthquake
D. Volcanic Eruption

19. Who among the following people is
doing an activity that helps lessen
the occurrence of landslides?
A. Person L constructs their home on a steep slope.
B. Person M puts as much vegetation as possible on
the nearby slope.
C. Person N creates a water canal that cuts through
some part of the hill.
D. Person 0 gathers topsoil from the mountain for
their backyard garden.

20. During a typhoon, you noticed an
abnormal rise of seawater level that
caused flooding in the coastal area
you are living in. What phenomenon
had you just witnessed?
A. Tornado
B. Tsunami
C. Spring Tide
D. Storm Surge

21. Suppose you live in a coastal area and
your primary source of drinking water
has always been through a water pump.
Over the years, you noticed that the
water gets saltier and saltier. What
coastal process could have occurred?
A. Tidal Wave
B. Coastal Erosion
C. Saltwater Intrusion
D. Coastal Submersion

22. A businessman wanted to build a five-
story hotel a few meters away from
the edge of a cliff on the shore. Should
this plan be allowed by the authority?
A. Yes, it will boost tourism in the community.
B. Yes, it is the best spot to capture beautiful
sceneries.
C. No, its construction could only worsen
coastal erosion
D. No, the businessman needs to have large
amount of investment

23. Which of the following conditions
will best fossilize an animal?
A. The animal is made up of bones
B. The animal is soft-bodied like jellyfish
C. The animal dies at sea and sinks deep
D. The animal is left exposed to the
elements.

24. On a hot day, a man feels to go for a swim, drinks
some cold water, or sits in the shade, while on the
cold day, he feels to put on a coat, sits in the
corner, or eats a bowl of hot soup. Given the
situation, how would you classify he interaction of
the man to his environment.
A. It is an example of growth and development
B. It shows man’s adaptation to his environment
C. It is the ability to the man to regulate his internal
condition
D. It ensures the survival of man and in carrying out
his functions.

25. Which of the following descriptions
about the organization of an
ecosystem is correct.
A. Communities make up species, which make up
populations.
B. Populations make up species, which make up
communities.
C. Species make up communities, Which make up
populations.
D. Species make up populations, which make up
communities.

26. Which of the following is a correct
pair of organ and organ system?
A. Lungs – Excretory
B. Brain – Circulatory
C. Mouth – Respiratory
D. Skin - Integumentary

27. Which of the following terms refers to
the biological process of producing
offspring that are biologically or
genetically similar to the parents?
A. Evolution
B. Fertilization
C. Development
D. Reproduction

28. What term refers to the process of
producing new organism by combining
the genetic information of two
individuals having different sexes?
A. External Fertilization
B. Internal Fertilization
C. Sexual Reproduction
D. Asexual Reproduction

29. Which of the following statements
correctly differentiate sexual
reproduction from asexual
reproduction?
A. A. Sexual reproduction is faster than asexual
reproduction.
B. B. Sexual reproduction requires one parent while
asexual requires two.
C. c. Sexual reproduction requires two parents while
asexual requires one.
D. D. Sexual reproduction produces identical offspring
while asexual produces offspring from two parents.

30. Which of the following crop is not
genetically modified?
A. Bt Corn
B. Golden Rice
C. BT Eggplant
D. Conventional Rice

31. Which of the following is considered a
risk of Genetically Modified food to
people's health?
A. Genetically food enhanced pathogenicity
B. Genetically food production cost is reduced
C. Genetically food increase weed or pest
burden
D. Genetically food contains higher amounts of
vitamins and minerals.

32. What responses are generated by
the nervous system when you run
on a treadmill?
A. Dispose waste from the body
B. Get the oxygen into our body and get rid of
carbon dioxide.
C. Food is broken down by to give energy to every
cell in the body.
D. Once exercise begins , the sympathetic nervous
system is activated, and the heart rate rises
quickly

33. Pablo went out with his friends almost every day
to have fun and takes whatever vices they want .
One day he complains abdominal pain and notices
that the appearance of his skin turns yellowish
which are some symptoms of a liver problem.
Which do you think among his vices caused him
liver problem?
A. Smoking
B. Gambling
C. Social Games
D. Alcohol Consumption

34. Covid 19 pandemic affects the immune
system of individual who will be infected
with this virus. As a student, which of the
following campaign below is the best thing to
promote to boost your immune system?
A. Drink alcohol in moderation.
B. Always observe health protocols.
C. Have an exercise at least once a week.
D. Eat a diet high in fruits and vegetables

35. The family of Amelia lives in a "sitio" where most of her
relatives are also living there because it's where their
farm located which is the source of their foods. Cora,
friend of Amelia lives in another sitio, 5 kilometers away
from Amelia's place. The family of Cora is living in
another sitio because it is where their farm located . How
will you classify the household-population distribution
pattern with Amelia 's & Cora's place?
A. Clumped Distribution
B. Random Distribution
C. Uniform Distribution
D. Vertical Distribution

36. This term refers to the serious disruption of the
functioning of a community or a society involving
widespread human, material, economic or
environmental losses and impacts, which exceeds
the ability of the affected community or to society
to cope using its own resources.
A. Risk
B. Disaster
C. Risk Factor
D. Disaster Risk

37. The over consumption of natural
resources can be categorized under
what disaster risk factor?
A. Climate change
B. Poverty and inequality
C. Environmental degradation
D. Globalized economic development

38. The following is a list of devastating
events that can occur as a result of a
natural catastrophe EXCEPT?
A. Loss of life
B. Economic downfall
C. Loss of livelihood and services
D. Destruction of infrastructures

39. The COVID19 events resulted to
negative effects such as loss of life and
public demobilization; will you classify
COVID19 as a pandemic?
A. Yes, since it has spread across nations or
continents
B. No, since there are already vaccines that will treat
the virus.
C. No, because only few locations in the world have
been affected.
D. Yes, because it is seen as a disease outbreak in a
specific geographic location.

40. Which of the following is NOT an
example of vulnerability?
A. Lack of protection of assets
B. Construction of earthquake-proof buildings
C. Too much consumption of natural resources
D. Unawareness of preparedness measures of
disasters

41. The inability of people to protect
themselves from severe effects of
hazards is one of the examples of
social vulnerability. Who are most
vulnerable to disasters?
A. Men
B. Women
C. Children
D. Teenagers

42. COVID 19 is an acute respiratory illness in
humans caused by a coronavirus capable of
producing severe symptoms and even death.
What is the best way to reduce vulnerability
against COVID 19?
A. Eat a balanced diet and sleep well.
B. Study the effects of the different brands of vaccines.
C. Always do proper hand washing and frequent
disinfecting the area where possible exposure occurs.
D. Practice protective measures such as wearing of
facemask, observing social distancing and taking
vitamins to boost the immune system.

43. Storm surge is the rise of seawater
level during intense storms like super
typhoons. Which of the following is
highly susceptible to storm surges?
A. Tall hotels in Butuan City
B. Crowded market in Baclaran
C. Restaurants in Siargao Island
D. High mountain valleys in Davao region

44. Ben and Blake are both 65 years old and they
live in a nipa hut located near the river. It was
announced earlier that the landfall of the
typhoon will be in the evening. So, they
packed their important things and evacuate
to higher grounds. Which elements of
vulnerabilities are present in this situation?
A. Physical and social vulnerabilities
B. Physical and economic vulnerabilities
C. Economic and environmental vulnerabilities
D. Socioeconomic and environmental vulnerabilities

45. What scenario can describe a
Psychological Impact of COVID-19
pandemic?
A. Increase of hate-crimes and assaults against Asian
populations.
B. Loss of economic opportunities and employment due
to lockdown.
C. Depression due to lockdown and grief for the sudden
loss of loved ones.
D. COVID-19 patients developed long-term respiratory-
related illness even after clearing from the virus.

46. In a sunny afternoon at the beach, people
from the coastal areas noticed a sudden
recession of water levels below the expected
tides. What is the most likely explanation of
the abrupt event?
A. There is a storm surge coming.
B. A volcano is erupting in the mainland.
C. A tsunami is likely to occur in a few minutes.
D. A flashflood is about to take place in the
highlands.

47. Hazard maps are generated by experts after
a careful study of the area. The statements
below entail the importance of an
earthquake hazard map to the community
EXCEPT:
A. Hazard maps are meant to educate the people living in the
area on what to do before, during or after an earthquake
related disaster.
B. Hazard maps are meant to alarm and make people panic
when disaster occurs.
C. Hazard maps are meant to prepare the community from
greater damage of property and loss of lives when an
earthquake related disasters took place in the area.
D. Hazard maps, are used as tools in planning evacuation after
earthquake related disasters take place.

48. Jurry and his friends agreed to go for a swim in a nearby
hot spring where the volcano is located. After an hour of
diving and swimming, you suddenly smell a rotten egg
near the area. You understand in your science class, the
foul odor is caused by a sulphuric substance. As a
science enthusiast, what conclusion can you deduce
based on your observation?
A. A potential volcano will develop.
B. A potential eruption will likely to happen.
C. An indicator that geothermal energy can be
harnessed from the hot spring
D. An indicator that metals such as gold and copper
are present in the area.

49. Which of the following hazards is NOT
shown in a volcano risk maps?
A. Lahar
B. Lava flow
C. Pyroclastic flow
D. Degree avalanche

50. Student B observes a region where
rock fall and debris mixes with water
and forms slide that can travel
considerable distances. What geologic
phenomenon does student B
observed?
A. Creep
B. Slump
C. Mudslide
D. Debris flow

51. Anna purchased a new property on the
countryside. Upon looking on the geologic
map, she discovered that the area has a
green color-coded rain induced landslide
prone area. If you were Anna, what actions
should you consider to lessen the impacts of
a hazard?
A. Be cautious
B. Be prepared
C. Be ready to evacuate
D. Be alert and ready to evacuate

52. James had identified that their school was
situated on a color red rain induced landslide
prone area. He then concluded that they
must be alert and ready to evacuate in case
of heavy rains. Does his action correct?
A. No, because they must be prepared.
B. Yes, because they must be cautious.
C. Yes, because the red color represents high
susceptibility to landslide.
D. No, because the red color represents low
susceptibility.

53. Meteorologists are scientist who study
weather and climate, using data from
the land, sea, and atmosphere. Which
of the following tools can help them
predict typhoons?
A. Wind finding radar, thermometer, and pilot
balloon/theodolite
B. Thermometer, thermograph, ceiling light projection,
radiosonde
C. Ceiling balloon, mercurial barometer, maximum-
minimum thermometer, barograph
D. Tipping bucket rain gauge, thermometer hygrometer,
hygrothermograph, sling psychrometer

54. Fire hazards are any actions, materials,
or conditions that might increase the
intensity of a fire or cause a fire to
start. Which of the following causes is
common to household fires?
A. Lightning
B. Fireworks
C. Bomb explosion
D. Neglected electrical appliances

55. In an event where your clothes are
caught on fire, what is the correct
action that you need to do?
A. Stop, Drop, and Roll
B. Drop, Hold, and Listen
C. Wait, Crawl, and Squat
D. Fold, Observe, and Roll out

56. Alice was about to fry a fish on her new stove. As she
puts the fish on the hot oil, the frying pan was caught on
fire. She was about to pour water on the fire when her
mother stops her and put a cover on the pan instead.
What would likely happen if Alice pours the water on
the fire?
A. The water will cause the oil to splash and spread
the fire even worse.
B. The water will cause the hot pan to produce a lot
of smoke and steam.
C. The water will put out the fire as it mixes with the
oil causing it to cool down rapidly.
D. The water will ignite the fire as it makes contact
with the burning oil causing it to explode.

57. Which refers to the characteristics and
circumstances of a community, system
or assets that makes it susceptible to
damaging effects of a hazard?
A. Risk
B. Hazard
C. Disaster
D. Vulnerability

58. Disaster Risk Reduction and Management is
composed of four ( 4) thematic areas wherein the
overall vision is to create a safer, adaptive and
disaster resilient Filipino communities towards
sustainable development. Which of the following
is NOT a component of the DRRM thematic areas?
A. Disaster response
B. Disaster resiliency
C. Disaster preparedness
D. Disaster prevention and mitigation

59. Disasters are one of the worst things
we have to deal with but there are
ways to be prepared. Which of the
following BEST describe successful
community preparedness plan?
A. Determine the risk to the health of the
jurisdiction.
B. Strengthened community partnerships
basketball league in the barangay.
C. Have coordination with partners and have
collected funds to them.
D. Provided guidance for a special plan for the
barangay.

60. Evaluation is the critical component of
the disaster risk reduction
management framework. Which of
the following shows the correct order
of the process?
A. Prevention and mitigation> Preparedness>Response>
Rehabilitation and Recovery.
B. Preparedness>Response>Prevention and
mitigation>Rehabilitation and Recovery.
C. Response>Preparedness>Prevention and
mitigation>Rehabilitation and Recovery.
D. Preparedness>Response>Rehabilitation and
Recovery>Prevention and mitigation.

61. The following agencies below are members of the
National Disaster Reduction and Management
Council (NDRRMC) as stated in RA 10121
otherwise known as “Philippine Disaster Risk
Reduction and Management Act of 2010” EXCEPT:
A. Department of Agriculture (DA)
B. National Commission for Culture and Arts (NCCA)
C. Department of Interior and Local Government
(DILG)
D. Housing and Urban Development Coordinating
Council (HUDCC)