The document contains a science quiz with multiple choice questions covering various topics in science from the human body to the solar system to the Earth's layers. It includes three rounds of questions - Easy, Average, and Difficult - with 10 questions in each round covering topics such as the functions of bones and minerals, the layers of the Earth, the circulatory system, and more. The questions increase in difficulty from the Easy to the Difficult rounds.

1. GRADE VI
SCIENCE QUIZ

2. EASY ROUND

3. 1. Some plants grow better if bone meal
(ground-up bones) is spread around
their roots. What does bone meal supply
to the plants that makes them grow
better?
A. energy
B. minerals
C. vitamins
D. water

4. Answer: B

5. 2. Sensory messages are taken
to the brain by
____________.
A. arteries and veins
B. arteries and hormones
C. nerve and hormones
D. muscles and veins

6. Answer: C

7. 3. Alexander Fleming noticed that bacteria
growing on a plate of agar did not grow next to
a mold that was growing on the same plate. He
wrote in his laboratory report “The mold may
be producing a substance that kills bacteria”.
This statement is best described as _________.
A. an observation
B. a hypothesis
C. a generalization
D. a conclusion

8. Answer: B

9. 4. Why do stars seem to twinkle?
A.They are too hot
B.Their size and color vary
C.They are covered with clouds
D.Light bends as it passes through
layers of the atmosphere

10. Answer: D

11. 5. The oxygen - rich blood from
the heart flows to the largest
artery known as
A. superior vena cava
B. inferior vena cava
C. coronary artery
D. aorta

12. Answer: D

13. 6. What is the most important function
of the blood?
A. Collects food nutrients and oxygen
from the body.
B. Carries food nutrients and oxygen to
all parts of the body.
C. Regulates the rise of the body
temperature.
D. Carries impurities to the cells.

14. Answer: B

15. 7. A beaker was filled with water up to 40 mL
mark. A small stone was slowly lowered into
the beaker and it was observed that the level
rose to 45 ml. What does the change in the
level of the water represents?
A. volume of water
B. weight of the stone
C. volume of stone
D. weight of the stone

16. Answer: C

17. 8. The picture shows the three layers of
the Earth. Where is it hottest?
A. Layer A C. Layer B
B. Layer C D. All 3 layers are the
same temp.

18. Answer: B

19. 9. What layer of the earth is
inferred to be liquid in form?
A. crust
B. mantle
C. outer core
D. inner core

20. Answer: C

21. 10. Why does boiling of water in a
kettle overflow and spill?
A. Water increases its volume when
heated.
B. Water forms bubbles when heated.
C. Water expands when heated.
D. Water overflow when heated.

22. Answer C

23. AVERAGE
ROUND

24. 1. The movie “Twilight Zone” has a
wolf - character portrayed by Taylor
Lutner. There are scenes, he, as a wolf
place his scent on trees. Wolves most
likely do this in order to ________.
A. attract prey
B. attract female wolves.
C. mark their territory against other wolves.
D. mark the location of their shelter and
food.

25. Answer: C

26. 2. Which BEST describes the movement of
the plates that make up Earth’s surface over
million of years?
A. They have never moved.
B. They have been continually moving.
C. They stayed the same millions of years
but are now moving.
D. They moved for millions of years but
have now stopped.

27. Answer: B

28. 4. Why do mountain climbers use
oxygen equipment at the top of the world’s
highest mountain?
A. There is less oxygen in the air at
great heights.
B. There is little nitrogen in the air at
great heights.
C. There is a hole in the ozone layer.
D. There is no air at the top of very high
mountains.

29. Answer: A

30. 5. Two potatoes of equal mass were boiled, one in
Baguio and one in Manila. Where will the potato
cook faster and why?
A. In Baguio, the higher the altitude the higher the
temperature.
B. In Baguio, the higher the altitude the lower the
temperature.
C. In Manila, the lower the altitude the higher the
temperature.
D. In Manila, the higher the altitude the lower the
temperature.

31. Answer: C

32. 6. Which of the following characterizes
varicose veins?
A. Veins in the brain swell.
B. Veins in the lower extremity shrink.
C. Valves of veins in the legs fail to
function properly.
D. Valves of veins in the heart fail to
function properly.

33. Answer: C

34. 7. Why was Pioneer - Venus 2 sent to
Venus?
A. To investigate the atmosphere of Venus.
B. To examine the soil in Venus.
C. To probe the interior part of Venus.
D. To discover the possible life forms in
Venus.

35. Answer: A

36. 8. In general, pages of books turn
brown after a number of years. Why?
A. The paper has become dusty.
B. The paper has become very dry.
C. The paper has reacted with oxygen
from the air.
D. The paper has reacted with
pollutants in the air.

37. Answer: C

38. 9. Which of the following best describes the
energy of a ball as it bounces up and down?
A. Potential Energy and Kinetic energy
change at the same time.
B. Potential Energy increases as it moves
down.
C. Kinetic energy increases as it moves up.
D. Potential Energy and Kinetic energy
remains the same.

39. Answer: A

40. 10. The mathematical questions that
probe the Big Bang Theory were
formulated by ________
A. Alexander Friedman
B. Albert Einstein
C. Edwin Hubble
D. Edwin Aldrin Jr.

41. Answer: B

42. DIFFICULT
ROUND

43. 1.An incomplete food web has been drawn for
you. Complete it by filling in each of the empty
circles with the member of the correct animals or
plants from the list. Remember that the arrows
represent energy flow and go.
A. Caterpillar C. Hawk
B. Corn D. Snake
ACACIA
TREE
MOUSE
MAYA
SUN
?
?
?
?

44. ACACI
A
TREE
MOUS
E
MAYA
SUN
A
B
D
C
ANSWER: B. Corn A. Caterpillar D. Snake C. Hawk

45. 2. Insecticides are used to control insect population
so that they do not destroy crops. Overtime some
insecticides become less effective at killing insects and
new insecticides must be developed.
What is most likely reason why insecticides become
less effective overtime?
A. Surviving insects have learned to include
insecticides as a food source.
B. Surviving insects pass their resistance to
insecticides to their offspring.
C. Insecticides build up in the soil.
D. Insecticides are concentrated at the bottom of
the food chain.

46. Answer: B

47. 3. . The graph shows the progress made by a car
travelling along a straight line. What is the speed of
the car?
TIME ( MINUTES)
DISTANC
E
(kms).

48. Answer: 100 Km/Hr

49. 5. What feature in the
sun appears like
billowing arches of
glowing gases?

50. Answer:
Prominences

51. 6. Which part of the brain
acts like a switchboard that
allows the communications
from the brain to the
other parts of the nervous
system.

52. Answer: Midbrain

53. 7. A galaxy that comprises
two to three percent of the
total number of galaxies.

54. Answer: Irregular
galaxy

55. 8. Where can the lowest
point on the earth's crust be
found?

56. Answer: Marianas
Trench

57. 9. Why do you see
lightning spark first
before you hear
thunder during a
thunderstorm?

58. Answer: Because
light travels faster
than sound.

59. 10. What season is
characterized with the
most amount of
leaves falling from
trees?

60. Answer: Autumn

61. CLINCHER
ROUND

62. 1. When a physician puts a
stethoscope to your
chest , two sounds are
heard. What sound
represents the opening
and closing of the
valves?

63. Answer: lub-dub,
lub-dub

64. 2. A hereditary blood disorder
wherein blood clots very
slowly affecting only males
but transmitted in genes
of females.

65. Answer: Hemophilia

66. 3. For a rocket to orbit
the earth and become a
satellite, its speed must
be around _____

67. Answer: 29 000 kph

68. 4. Why do sailors avoid the doldrums?
A. because their ships woud just stay
in a particular area and would not move
B. because theirips would sail so fast
that they may hit the rocks
C. because their ships would hit polar
icebergs
D. both A and C

69. Answer: A

70. 5. Which instrument can view the
heavenly bodies clearly and without
the filtering effect of Earth's
atmosphere?
A. radio telescope
B. spectrograph
C. space telescope
D. space colony

71. Answer: C