NAT REVIEW 2016

1. SCIENCE

2. When ice melts, what
change occur?
a. Liquid to gas
b. Gas to liquid
c. Solid to liquid
d. Gas to solid

3. If you pour acid on
limestone, it produces
carbon dioxide gas. What
changes occur?
a. Physical Change
b. Chemical change
c. Both
d. Nothing happens

4. Which of the following is
NOT a physical change?
a. Grating cheese
b. Melting Cheese
c. Fermenting of cheese
d. Mixing two cheeses in a
bowl

5. Which transformation of
energy takes place when a
toaster is switched on?
a. Chemical to sound
b. Electrical to sound
c. Chemical to thermal
d. Electrical to thermal

6. When you see bubbles on the bowl of
soup which had been left on the
table for one night, you may infer
that:
a. The liquid component of the soup
is evaporating
b. Physical change is taking place in
the soup
c. The soup is undergoing chemical
change
d. Air is dissolved in the soup

7. Deib Lhor kicks a ball on a
level sidewalk. It rolls to stop
after sometime because____
a. No force is acting on the ball
b. Inertia at rest is acting on the
ball
c. Gravity pulls the ball down
d. Friction slows the ball down

8. Max apply grease to the gears
of her bicycle to___
a. Reduce friction
b. Increase acceleration
c. Avoid accident
d. Facilitate easy turn in the
curve

9. Zarnaih threw a ball over the
fence. What energy did the
moving ball have?
a. Heat energy
b. Potential energy
c. Light energy
d. Kinetic energy

10. Which of the following explains the
law of inertia?
a. If no force acts on an object that is
moving, it will continue moving at
the same speed and direction
b. An object accelerates because of a
force that acts on it.
c. For every action, there is an equal
and opposite reaction
d. A force causes the object to move in
circular motion.

11. Chemical spray is harmful to
the environment. Why?
a. Its affects the clouds
b. It pollutes the rivers and
oceans
c. It destroys the ozone layer
d. It destroys our clothes

12. Why can planet Earth support
life?
a. It has an atmosphere
b. It has soil where green plants
grow
c. It has enough sunlight
d. All of the above

13. GLOBAL WARMING is the
abnormal rise of Earth’s
temperature. What cause of
it?
a. Greenhouse effect
b. Burning houses
c. Air pollution
d. Garbage dumping

14. A toy robot can walk and
talk and runs on batteries.
What type of energy is
stored in the batteries?
a. Chemical
b. Electrical
c. Nuclear
d. Thermal

15. Which transformation of
energy takes place when a
toaster is switched on?
a. Chemical to sound
b. Electrical to sound
c. Chemical to sound
d. Electrical to sound

16. It is the complete trip of the
blood from the heart to all
parts of the body and back to
the heart.
a. Digestion
b. Circulation
c. Respiration
d. Secretion

17. What happens to the blood when
it reaches the lungs?
a. The blood becomes pure and
clean
b. The blood becomes oxygenated
in the lungs
c. The blood becomes
deoxygenated in the lungs
d. The blood flows continuously
to the lungs

18. Which of the following
controls our body
activities?
a. Nerves
b. Spinal Cord
c. Brain
d. Backbone

19. Which of the following
carries messages to and
from the brain?
a. Nerves
b. Spinal cord
c. Vertebrae
d. Backbone

20. Why can you hear a sound?
a. The nerves that are sensitive
to sound carry the message to
the brain
b. The nerves that are sensitive
to light carry message to the
brain
c. The outer ear collects sounds
d. The sounds are loud enough

21.  What is function of the spinal cord?
a. Responsible for man’s ability to learn
habits and develop skills
b. Enables us to think, remember and to be
aware of many things around us
c. Enables the sensory and motor
information to pass between the brain
and the parts of the body
d. Carry impulses from sense receptors to
the central nervous system.

22. What part of the brain is the
largest and controls mental
processes such as thinking,
memorizing, and decision-
making?
a. Spinal Cord
b. Cerebrum
c. Cerebellum
d. Brain Stem

23. You saw your mother carrying a basket full
of grocery items that she brought from the
market. You run to help her. What is the
usual path of messages received by the body
from the environment?
a. brain->nerves->spinal cord-> sense
organs
b. Nerves-> sense organs-> brain-> spinal
cord
c. Spinal cord->sense organs->brain->
nerves
d. Sense organs->nerve->spinal cord->
brain

24. Which organism is an
omnivores?
a. Snake
b. Caterpillar
c. Eagle
d. Chicken

25. The tail enables the sperm to
swim. Why does the sperm need
to be able to swim?
a. To travel around the testicle
b. To prevent drown in the
semen
c. Because it is a member of the
fish family
d. In order to get to the egg.

26. Zygote means new individual.
That fusion of the male and
female gamete to form a zygote
is known as___
a. Ejaculation
b. Pollination
c. Fertilization
d. Menstruation

27. To prevent the passing of eggs
from the ovary, which part of the
organ is tied or cut in an operation
called tubal ligation?
a. Urethra
b. Ovary
c. Cervix
d. Fallopian tubes

28. What is the function of the
kidney?
a. It stores urine
b. It carries urine out of the body
c. It removes wastes from the
blood
d. It gives signal to the brain to
expel the urine from the body

29. What do all vertebrates have in
common?
a. They live on land
b. They all have a hard
internal skeleton or
backbone
c. They all have legs
d. They are all warm blooded

30. Which of the following
animals are classified as
amphibians?
a. Frog and salamander
b. Lizard and alligator
c. Monkey and bear
d. Eagle and dove

31. How do clams, oysters, and
snails protect themselves
from their enemies?
a. By making slimy
secretions
b. By using their hard shells
c. By using their spines
d. By secreting poison

32. Adaptations are inherited
characteristics that help an organism
to survive and reproduce in its
environment. Looking both ways
before crossing a street helps us
survive because it is____
a. A survival adaptation
b. An inherited survival experience
c. Learned through experience
d. Inherited from our parents

33. Which one of the following
describes an adaptation?
a. An insect that acts as a
decomposer
b. A type of desert animal
c. Feature that helps an animal
or plant to survive
d. A group of bacteria that live
in an environment

34. Which is NOT an example of
plant adaptation?
a. A cactus has a thick cover to
hold water in
b. A tree loses its leaves in the
winter
c. A plant has green leaves
d. A lily grows bright red flowers
to attract pollinatiors

35. The inside of the Earth consists of four
major layers. What is the correct order
of the layers from the inside of the Earth
outwards?
a. Inner core, outer core, crust, mantle
b. Mantle, inner core, outer core, crust
c. Inner core, outer core, mantle, crust
d. Outer core, inner core, mantle crust

36. The clean-up crew are
decomposers. They get rid of the
wastes in an ecosystem.
Decomposers differ from
scavengers because they_____
a. Do not eat dead organism
b. Break down larger organism
c. Only eat dead organism
d. Only feed on dead plants and
animals

37. Organisms vary according to what
food they eat and how they eat it.
Which of the following
combinations is NOT true?
a. Python, wild pig, movable jaws
b. Moth, plant parts, proboscis
c. Frog, insects, rolled tongue
d. Bird, insects, beak

38. This is the ability to face things as
they are, to be happy and
cheerful most of the time, to get
along with others and to work in
helpful ways.
a. Good mental health
b. Friendly status
c. Positive action
d. Negative attitude

39. Some living things depend on
each other in a very close
relationship, which lasts over
time. This relationship is
called..
a. Symbiosis
b. Parasitism
c. Mutualism
d. Commensalism

40. Plant -> Grasshopper -> Frog->
Snake->Eagle
To what order of consumer
does the frog belong in the food
chain?
a. First-order consumer
b. Second-order consumer
c. Third-order consumer
d. Fourth-order consumer

41. PREPARED BY:
Jimnaira Abanto