3. Directions: Write TRUE if the statement is correct and
FALSE if wrong.
______ 1. Materials undergo changes in their
properties when heated.
______ 2. Materials like crayon, chocolate and
margarine change its form from solid to gas when
heated.
______ 3. Butter when heated changes to liquid then
solidifies when cooled.
______4. All materials have the same properties.
______5. Some changes in the materials are harmful to
the environment.
5. 1. BONES
• are structural foundation for
us to stand straight and
form the shape in our body.
They also serve to protect
most of our internal organs.
11. Joints
• the place where two
bones meet; it allows
movement; movements
originate from here.
12. Muscles
•it forms the fleshy parts of
our body. They enable
movement, give shape and
form to our body and
protect delicate organs.
13. 2. STOMACH AND INTESTINES
- The food is chemically digested
through our stomach and intestines.
After digestion the food is broken down
into simpler form that is used by the
body.
14. 3. KIDNEY
•is a bean-shaped organ. Our
body needs to eliminate
unnecessary substances that has
entered into the system. It
removes fluids and waste
products in the body through
urine so it filters blood and
produced urine.
15. KIDNEY
- The right kidney is
lower because of the presence
of the liver. It filters salts,
water and nitrogenous wastes.
16. 4. HEART
• a hollow muscular organ
located between the two
lungs. It is protected by a rib
cage and it is about the size
of your fist. The heart is
located in the middle of the
chest cavity.
17. 4. HEART
• The heart is made up of
cardiac muscles which contract
involuntarily. This means that
its contractions cannot be
controlled by your will. It
continues to pump blood even
you are sleeping. The beating
of the heart is due to the
contraction of your heart
muscles
18. 5. LUNGS
• filter the oxygen that enters
our body because it contains a
filtering structure to ensure
that the heart receives clean
oxygen from the lungs.
• - it supplies oxygen in the
body necessary for respiration
or exchange of gases.
19. 6. BRAIN
• is a highly complex organ.
• It is found in the head and is protected by the
skull, soft tissues called meninges and a cushion
of fluid. It weighs about 1.5 kg. and contains
billions of neurons.
• The functions of the brain:
1. It controls the voluntary activities of the body.
Like thinking, solving problems, and memorizing.
2. Details and decision making.
3. It controls the muscle movement of our body
like walking and writing.
48. Match the organ in Column A with its corresponding description or function in Column B. write the
letters of your chosen answer.
COLUMN A COLUMN B
1. Heart a. filters the blood and produce urine
2. Kidney b. Support and protect most of our internal organs.
3. Lungs
4. brain c. Pumps blood to all parts of the body
5. bones d. Gets oxygen and remove carbon dioxide from the blood.
E. Responsible for learning and acquiring skills.
