Science 6 1 Prepared by: Mauie Flores
LSM 2012-2013 www.the24hourmommy.com ©
SCIENCE 6
Lourdes School of Mandaluyong
1st Trimester Exam Reviewer – Answer Key
Identify the laboratory apparatus being described. Write your answer in the blank
before each number.
Erlenmeyer flask
Platform balance
Beaker
Funnel
Bunsen burner
Test tube
Crucible
Mortar and pestle
Pipet
Ring stand
Stirring rod
Graduated cylinder
Wire gauze
Test tube rack
Thermometer
1. It is used to heat and store liquids. Its bottom is wider than the
top to make heating faster.
2. It is a type of scale with two platforms to hold objects to be
weighed.
3. It can be used to hold and heat liquids. It can also be used in
mixing one component to another.
4. It is used to prevent spillage and make transferring powders
and liquids from one container to another easier.
5. It is used to heat up items in the laboratory. It gives off a small
flame that can be adjusted.
6. It is a basic container in the laboratory. It is small and can
hold a small amount of liquid. It can also be used in heating.
7. It is used to heat small quantities at high temperatures.
8. These are used in crushing solids into powder.
9. It is used to move small amounts of liquids from place to
place. It is usually disposable and made of plastic.
10. It is used to hold items being heated.
11. It is made of glass and is used to stir mixtures.
12. It is used to accurately measure the volume of liquids.
13. It is used to support a container (beaker/flask) during heating.
14. It is used to hold test tubes during an experiment or during
storage.
15. It is used to take temperature of solids, liquids, and gases.
Read each sentence and identify the scientific attitude being described. Write only the
letter of your answer.
A. Careful judgment
B. Creativity
C. Critical mindedness
D. Curiosity
E. Humility
F. Intellectual honesty
G. Objectivity
H. Patience
I. Resourcefulness
J. Rationality
D
J
E
A
G
H
16. Scientists never stop learning. They want to know the why and how of
things.
17. Scientists do not believe in superstitions. Facts and statements should be
supported by proofs.
18. Scientists do not belittle others and boast about their achievements.
19. Scientists base their conclusions on facts and reliable information.
20. Scientists’ interpretations are based on actual observation and
experiments.
21. Scientists can spend time or days to finish a task to get accurate results.
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C
B
I
F
22. Scientists are willing to evaluate evidences presented in support of a
conclusion.
23. Scientists are sensitive to problems. They can generate new and original
ideas.
24. Scientists can find alternative materials for their experiments.
25. Scientists give reports truthfully and acknowledge their sources of
information.
Write True if the sentence is true. If it is false, correct the underlined word by writing your
answer on the blank.
True
Problem
Hypothesis
True
Controlled
variable
True
True
True
Albert Einstein
True
Airplane
True
True
Agapito Flores
True
26. Inferring is the process of giving logical meaning to an observation.
It is a tentative explanation given on observation.
27. A hypothesis is a scientific question that can be answered by
gathering evidences.
28. A problem is a tentative answer or explanation of something that
needs to be proven through scientific investigation.
29. The conditions or factors that affect the results of an experiment are
called variables.
30. A factor that is kept the same in an experiment is called
manipulated variable.
31. Testing hypotheses is done by experimentation.
32. Data are pieces of information gathered from the experiment.
33. A conclusion is a statement that answers the problem based on the
interpretation of observation.
34. Sir Isaac Newton is the scientist known for the Theory of Relativity.
35. Thomas Edison invented the electric light bulb.
36. The Wright Brothers, Orville and Wilbur, invented the microwave
oven.
37. Dra. Fe Del Mundo invented an improvised incubator that helped
babies in the barrios.
38. Alexander Fleming invented penicillin.
39. Pedro Flores was a Filipino scientist who was said to have invented
the first fluorescent lamp.
40. Nicholas Copernicus is regarded as the founder of modern
astronomy.
Encircle the letter of your answer.
41. It is the jelly-like part of the cell where chemical reactions, such as respiration,
take place. B
a. nucleus
b. cytoplasm
c. cell wall
d. cell membrane
42. It is the thick layer of the cell that gives it a regular shape. C
a. nucleus
b. cytoplasm
c. cell wall
d. cell membrane
43. It is the part of the cell that controls all cellular activities. A
a. nucleus
b. cytoplasm
c. cell wall
d. cell membrane
44. It is the thin layer of the cell that allows substances to enter and exit. D
a. nucleus
b. cytoplasm
c. cell wall
d. cell membrane
45. It is the organ system that supports the body and gives it shape. B
a. digestive system
b. skeletal system
c. respiratory system
d. excretory system
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46. It is the organ system that enables the body to move and maintain posture. B
a. Urinary system
b. Muscular system
c. Circulatory system
d. Nervous system
47. It is the organ system that transmits signals between the brain and different parts
of the body. D
a. Urinary system
b. Muscular system
c. Circulatory system
d. Nervous system
48. It is the organ system that is responsible for the exchange of gases within the
body. C
a. Digestive system
b. Skeletal system
c. Respiratory system
d. Excretory system
49. It is the organ system that that makes it possible for the body to produce an
offspring. B
a. Nervous system
b. Reproductive system
c. Circulatory system
d. Endocrine system
50. It is the organ system that is responsible for the removal of wastes from the body.
C
a. Digestive system
b. Urinary system
c. Excretory system
d. Endocrine system
51. These are responsible for receiving used blood coming from all the parts of the
body. B
a. valves
b. atria
c. plasma
d. ventricles
52. These are the pumping chambers of the heart. D
a. valves
b. atria
c. plasma
d. ventricles
53. These are overlapping layers of muscles that allow blood to flow only in one
direction. A
a. valves
b. atria
c. plasma
d. ventricles
54. At rest, the average heartbeat is ____ times per minute. C
a. 40-80
b. 50-90
c. 60-100
d. 70-110
55. Blood is composed of 55% of a liquid part called ____. D
a. red blood cells
b. white blood cells
c. platelets
d. plasma
Fill in the blanks. Choose your answer from the list below.
o vena cava 66
o pulse 57
o capillaries 67
o leukocytes 60
o heart 56
o lymph nodes 68
o platelets 61
o aorta 64
o arteries 63
o blood 58
o erythrocytes 59
o veins 65
o blood vessels 62
o systemic
circulation 70
o pulmonary
circulation 69
56. It is the job of the _______________ to pump blood and keep the blood moving
throughout the body.
57. The _______________ is the rhythmic stretching of the artery caused by the
pressure of the blood within as the ventricles contract.
58. The _______________ transports water, oxygen, nutrients, salts, hormones, and
other substances that sustain life.
59. Red blood cells or _______________ transport oxygen and carbon dioxide to and
from the cells.
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60. White blood cells or _______________ fight invading bacteria, viruses, fungi, and
parasites that cause infection.
61. _______________are made in the bone marrow and they help stop bleeding.
62. _______________ are the vast network of small tubes that carry blood throughout
your body.
63. _______________ are blood vessels with thick walls that carry oxygen-rich blood
away from the heart.
64. _______________ is the largest artery.
65. _______________ are thin-walled blood vessels that carry oxygen-poor blood back
to the heart.
66. The largest vein is called _______________.
67. _______________ are the smallest blood vessels and it connects arteries to veins.
68. _______________ are masses of tissues composed of many white blood cells that
eat up and filter out harmful substances in the lymph.
69. _______________ is the movement of blood from the heart and into the lungs.
70. _______________ is the movement of blood from the heart to the rest of the parts
of body.
Enumeration.
I. Safety guidelines in the science laboratory (71-75):
a. Never run or play in the laboratory room.
b. Wear safety goggles when you are working with chemicals, open flame,
or substances that are harmful to the eyes.
c. Turn off heat sources when not in use.
d. Check glassware for chips or cracks and do not use them.
e. Never handle chemicals with your bare hands.
II. Four main types of tissues (76-79):
a. Epithelial
b. Connective
c. Muscle
d. Nerve
III. Type of muscle tissues (80-82):
a. Skeletal
b. Cardiac
c. smooth
IV. Major parts of the circulatory system (83-85)
a. Heart
b. Blood
c. Blood vessels
V. Chambers of the heart (86-89)
a. Left atrium
b. Right atrium
c. Left ventricle
d. Right ventricle
VI. Components of the blood (90-93):
a. Red blood cells (RBC)
b. White blood cells (WBC)
c. Platelets
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d. Plasma
VII. Kinds of blood protein (94-97)
a. Albumin
b. Fibrinogen
c. Prothrombin
d. Gamma globulin
VIII. Types of blood vessels (98-100)
a. Arteries
b. Veins
c. Capillaries
IX. Functions of the lymphatic system (101-103)
a. Absorbs fats from the intestines to the blood stream.
b. Removes and destroys toxic substances.
c. Prevents the spread of diseases throughout the body.
X. Ways to keep the circulatory system healthy. (104-108)
a. Exercise regularly.
b. Eat a well-balanced, low-fat diet.
c. Live in a clean environment.
d. Avoid smoking cigarettes or staying with smokers.
e. Have a positive outlook in life.
Complete the tables below.
DISEASE SYMPTOMS CAUSES
109. Aneurysm Slight shortness of breath,
chest pain, swelling of the
arm or the face and neck.
Bulging aorta/artery caused
by weakened walls and high
blood pressure.
110. Angina pectoris Chest pains that result to
difficulty in breathing.
Insufficient oxygen reaching
the heart muscle because of
narrowing or obstruction of
the coronary artery.
111. Arteriosclerosis Chest pains and shortness of
breath, severe leg pain, and
high blood pressure.
Hardening of the arteries
because of cholesterol
deposits.
112. Leukemia Pale skin, fatigue, shortness of
breath, nosebleeds, and
bruises.
An immature blood cell
called the progenitor cell
divides uncontrollably and
becomes cancerous.
113. Stroke Paralysis on one or both sides
of the body and may result in
sudden death or permanent
brain damage.
Lack of blood flow to the
brain caused by a blood clot
in one of the arteries or a
ruptured artery.
114. Congenital
Heart Disease or
Blue Baby
Syndrome
Bluish tinge of the skin due to
insufficient supply of oxygen.
The opening between the
right and left atria or right
and left ventricles remain
open after birth.
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115. Hypertension or
high blood pressure
Dizziness, headache, and a
ringing sensation in the ears.
Blood pressure is higher than
normal.
Blood vessels narrow causing
the heart to pump harder
than normal.
116. Congestive
heart failure
Weakness, lack of
endurance, dull pain in the
legs, palpitation, and swelling
of the ankles.
The hurt muscles are weak
and are unable to pump
enough blood to the body
117. Iron-deficiency
anemia
Fatigue, faintness,
palpitation, shortness of
breath, and headache.
The bone marrow fails to
produce sufficient red blood
cells because of insufficient
iron in the body.
118. Sickle-cell
anemia
Severe infection and
damage to the major organs,
Unexplained back pain,
chest pain, and abdominal
pain.
Abnormal hemoglobin in the
blood carries disc-shaped
red blood cells to deform
into sickle shapes.
119. Hemophilia Inability of blood to clot even
from minor injuries.
Insufficiency or lack of blood
proteins called clotting
factors.
120. Polycythemia Headache, dizziness, fainting
spells, unusual itchiness after
taking a bath, frequent
nosebleeds, and swelling of
the ankle.
The blood contains an
abnormally large number of
red blood cells causing it to
thicken and block small
blood vessels.
121. Purpura Small patchy hemorrhages
on the skin.
Toxic or chemical injury to
blood vessels due to a low
platelet count.
122-125.
BLOOD TYPE CAN DONATE TO CAN RECEIVE FROM
A A, AB O, A
B B, AB B, O
AB AB All
O All O
