This document contains questions and answers from multiple rounds of a 7th grade science quiz bee, covering topics like the scientific method, mixtures and solutions, cells, forces and motion, and Earth and space science. It begins with an "Easy Round" of 10 questions, followed by an "Average Round" and "Difficult Round," and concludes with a final "Clincher Round" of 10 questions. The questions test knowledge of key science concepts and vocabulary.

1. Grade 7
Science
Quiz Bee

2. Easy
Round

3. 1. What is the first step in
conducting experimental
method?
a. Identify the problem.
b. Formulate the hypothesis.
c. Gather enough information.
d. Make a conclusion.

4. Answer
a. Identify the problem.

5. 2. Which among the choices
is considered as processed
solution?
a. Air
b. Seawater
c. Vinegar
d. Rainwater

6. Answer
c. Vinegar
(The rest of the choices
are naturally occurring
solutions)

7. 3. Which of the following
makes a heterogeneous
mixture?
a. Salt and Water
b. Oil and Water
c. Sugar and Water
d. Powdered juice and Water

8. Answer
b. Oil and Water

9. 4. It is an instrument used to
magnify the image of objects
that are too small to be seen
by unaided eyes.
a. Microscope
b. Seismograph
c. Telescope
d. Eyeglasses

10. Answer
a. Microscope

11. 5. Which of the following
parts allow different activities
of the cell to happen?
a. Nucleus
b. Vacuole
c. Centriole
d. Cytoplasm

12. Answer
d. Cytoplasm

13. 6. What part of the cell stores
water and maintain its
rigidity?
a. Cell Wall
b. Vacuole
c. Mitochondrion
d. Nucleus

14. Answer
b. Vacuole

15. 7. What does the slope of a
distance vs. time graph
represent?
a. acceleration
b. distance
c. displacement
d. speed

16. Answer
d. speed

17. 8. This refers to the shortest
distance between the object’s
two positions.
a. velocity
b. distance
c. displacement
d. speed

18. Answer
c. displacement

19. 9. Which of the following
processes doesn’t account
for an increase in the
atmospheric Carbon dioxide
levels?
a. Plant respiration.
b. Photosynthetic processes.
c. Fossil fuel combustion
d. Deforestation.

20. Answer
b. Photosynthetic Processes

21. 10. Which part in the
atmosphere that protects us
against the sun’s harmful
radiation?
a. Ozone Layer
b. Mesosphere
c. Stratosphere
d. Troposphere

22. Answer
c. Stratosphere

23. Average
Round

24. 1. What is the term given
to a solid that has the
ability to be hammered into
a thin sheet?
a. Ductility
b. Malleability
c. Magnetic
d. Conductor

25. Answer
b. Malleability

26. 2. It is a reaction between an
acid and a base forming salt
and water.
a. neutralization
b. acidic
c. basic
d. molarity

27. Answer
a. neutralization

28. 2. The word atom is from a
Greek word meaning:
a. small
b. unseen
c. indivisible
d. visible

29. Answer
c. indivisible

30. 4. How do plants benefit
from their root system?
a. They obtain water and
nutrients from the soil.
b. They provide strength and
support.
c. They manufacture food.
d. They produce flowers.

31. Answer
a. They obtain water
and nutrients from the
soil.

32. 5. Which of the following is
NOT TRUE about lichens?
a. They are partly fungi and
partly algae.
b. They provide home for the
algae.
c. They act as an indicator of
pollution.
d. They are examples of fungi.

33. Answer
d. They are examples
of fungi.

34. 6. The heart, brain, and
stomach are made up
of groups of:
a. organ
b. tissue
c. organelle
d. cell

35. Answer
b. Tissue

36. 7. Energy from the sun
reaches the earth
through___________.
a. Electromagnetic waves
b. Mechanical waves
c. Ultraviolet waves
d. Infrared waves

37. Answer
a. Electromagnetic Waves

38. 8. Molecules of gases are
farther apart, thus sound
travels in gases__________.
a. The slowest
b. The fastest
c. With undetermined speed
d. With varying speed

39. Answer
a. The slowest

40. 9.Global climate change is
being attributed to the
atmospheric increase in what
two gases produced by
human activities?
a. Oxygen & Hydrogen
b. Ozone & Methane
c. Nitrous oxide & Sulfur dioxide
d. Methane & Carbon dioxide

41. Answer
d. Methane & Carbon dioxide

42. 10. This natural phenomenon starts
during the summer months in the
northern hemisphere, when the
Asian continent becomes warmer
than the surrounding seas.
a. Intertropical convergence zone
b. Hanging Amihan
c. Trade Winds
d. Hanging Habagat

43. Answer
a. Intertropical convergence zone

44. Difficult
Round

45. 1. It is a substance
consisting of the
atoms of two or more
elements that are
chemically combined
in a fixed proportion.

46. Answer
Compound

47. 2. It is the kind of
compound that do
not contain carbon
and are usually found
outside the bodies of
living organisms.

48. Answer
Inorganic Compound

49. 3. Name the person
who developed a
table of elements
which revealed
regularities in
elemental properties.

50. Answer
DMITRI MENDELEEV

51. 4. A process in which
organisms replace or
restore their lost or
damaged body parts.

52. Answer
Regeneration

53. 5. This process
involves two parents
in order to produce
offspring that have
unique combinations
of genes.

54. Answer
Sexual Reproduction

55. 6. Which organelle is
referred to as “the
powerhouse of the
cell”?

56. Answer
Mitochondria

57. 7. It has the highest
frequency among all
the electromagnetic
waves (EM).

58. Answer
Gamma Rays

59. 8. This refers to the
emission of
electromagnetic waves
which carry energy
away from the surface
of the emitting body or
object.

60. Answer
Radiation

61. 9. What is the name of the
phenomenon that causes
an accumulation of heat in
the lower atmosphere
because of the absorption
of longwave radiation from
the Earth’s surface?

62. Answer
Greenhouse Effect

63. 10. What gas makes up
the majority of our
atmosphere?

64. Answer
Nitrogen

65. Clincher
Round

66. 1. It is the interaction
among biotic
components of an
ecosystem.

67. Answer
Ecological Interactions

68. 2. It is part of the cell
where the main life
activities occurs.

69. Answer
cytoplasm

70. 3. A process of
transfer of pollen
from an anther to the
stigma.

71. Answer
pollination

72. 4. It is often consider
a universal solvent.

73. Answer
water

74. 5. A combination of
two or more
substances that are
physically combined.

75. Answer
Mixture

76. 6. This is the
substance which is
dissolved in the
solvent.

77. Answer
Solute

78. 7. This is the
fundamental unit of
life.

79. Answer
Cell

80. 8. An area of land or
slope which drains its
water into a stream and
its tributaries.

81. Answer
Watershed

82. 9. The envelope of
gases surrounding
the earth.

83. Answer
Atmosphere

84. 10. The partial or complete
blocking from view of one
object by another.

85. Answer
Eclipse