Grade3_1st Q Science

8/14/2019 Grade3_1st Q Science

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1st Q- SCIENCE

I. WHAT IS SCIENCE

A. DIRECTIONS: Write a on the blank if the phrase describes acharacteristic of a good scientist and an X if it does not.

______ 1. believes in superstitions

______ 2. uses senses in observing things

______ 3. records his observations

______ 4. makes guesses based on rumors

______ 5. thinks in logical manner

B. DIRECTIONS: What would a good scientist do in the followingcircumstances? Circle the letter of the correct answer.

1. Anton has been wondering marine life. Until he is old enoughto go scuba diving and explore, he can

a. read books and magazines about marine life.b. keep on wondering until he is old enough.c. watch Finding Nemo.d. keep a pet fish.

2. Ben wants to find out how a caterpillar becomes a butterfly. Todo so, Ben should

a. watch National Geographic.b. catch a caterpillar, feed it and observe.

c. ask his yaya to figure it out.d. ask the palm reader.

3. Carlo tried to do an experiment he read about in the magazine.However, his results were different from that in the article. Carloshould

a. throw away his experiment.b. forget about the whole thing.

c. try to do the experiment again.d. ask his science teacher to do it for him.


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4. Dan saw a strange insect in the garden. He should

a. take a picture of the insect.b. observe it well then get his insect book to find out what it

is.c. step on the insect because it might bite.d. leave it.

5. Ethan saw a steaming pot and wondered if the steam is hot orcold. Ethan should

a. ask the cook if it is hot or cold.b. keep on looking at the steam.c. pass his hand through the steam to find out.

d. draw the steam in his drawing book.

II. THE SENSES AND SENSE ORGANS (EYES, EARS, SKIN,NOSE, TONGUE)

A. DIRECTIONS: Write T if the sentence is true and F if it is not.

_____ 1. Scabies is caused by parasites in the skin thatcan cause itching.

_____ 2. Tinea flava and athletes foot are caused by fungiinfections.

_____ 3. Deafness results when the eardrum in the middleear is broken.

_____ 4. A sty is a small boil on the eyelids.

_____ 5. Acne or pimples form when the skin has too much

sebum or oil.

_____ 6. A person with red, watery and swollen eyes haseye boils.

_____ 7. An ear discharge happens when water gets in theears.

_____ 8. Boils are eye infections caused by pus.

_____ 9. Sinusitis is a nose ailment that causes headache.ache.

_____ 10. A furry tongue can be caused by biting onestongue.

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_____ 11. A mouth sore results from lack of vitamin B or C,a cheek injury or germs.

_____ 12. A nosebleed can be caused by hot weather orstrong sneezing.

_____ 13. Colds are caused by the clogging of the sinus withmucous and symptoms include headache orpainful cheeks.

_____ 14. Tongue cracks are caused by allergies.

_____ 15. A person has ear discharge when yellowish liquidcomes out of the ear because of a pus that

developed in the middle ear.

C. DIRECTIONS: Fill in the missing word. Choose from the wordsin the box.

nose hairs taste buds nerve ending brain

sensory cells nostrils inner ear tongue

1. Your ____________ and nose work together to help you enjoyfood.

2. The tongue has ______________ that gather information aboutdifferent tastes.

3-4. The _____________, which are connected to the

____________________, can be found inside the nose.

5. The smells that we sense are also accurately identified throughthe help of our _________________.

6. From the middle ear, vibrations move through the fluid that fillsthe _____________________.

7. Air enters your nose through openings called ____________.

8. Most __________________ are found in the dermis.

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C. DIRECTIONS: Match column A with column B. Write thecorrect answer on the blank.

______ 1. iris a. inner layer of skin whereblood vessels, sweatglands and nerve endingsare found

______ 2. eardrum b. oily substance that causesacne or pimples

______ 3. dermis c. colored part of the eye

______ 4. outer ear d. organ we use for the

sense of touch

______ 5. sclera e. this makes pupils changein size

______ 6. sebum f. lets the light enter the eye;the hole in the middle of theiris

_______ 7. epidermis g. white part of the eye

_______ 8. skin h. part of ear that has acanal that leads to theinner parts

_______ 9. dim light i. this vibrates when soundenters the ears

_______ 10. pupil j. outer layer of skin that

keeps germs fromentering the body

D. Write one way of taking care of each of your sense organs.

1. Eyes: _____________________________________________

2 Ears: _____________________________________________

3 Nose: _____________________________________________

4 Tongue: ___________________________________________

5 Skin: _____________________________________________

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III. THE SKELETAL SYSTEM

A. DIRECTIONS: Fill in the blanks. Choose from the words insidethe box.

1. The ____________ protect your heart and lungs.

2. _____________ is a mineral that makes bones stronger.

3. The _____________ protects your spinal cord.

4. The skull is tough because it protects the ___________.

5. __________________ connect bones to one another.

6. The hipbone is also known as the ______________.

7. Bones also work with _____________ to help you domovements like running and kicking.

8. The _______________ protects internal organs like theintestines and urinary bladder.

B. DIRECTIONS: Write a on the blank if the sentence shows theproper care of the bones and an X if it does not.

_______ 1. Drink lots of milk which provides calcium.

_______ 2. Jump from high places.

_______ 3. Eat a well-balanced diet.

_______ 4. Take vitamins.

_______ 5. Play rough games recklessly.

IV. JOINTS

pelvis brain ribs

calcium hip bone tendons

muscles backbone joints kneecap

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A. DIRECTIONS. Circle the letter of the correct answer.

1. This kind of joint makes it possible for a bone to move in manydirections.

a. pivot joint b. hinge joint c. ball and socket joint

2. This joint allows the bones to move around and back.


3. The shoulder is an example of this.


4. This joint allows bones to move backward and forward in onlyone direction.


5. The lower arm bones move around this kind of joint.


6. The hip joint is an example of this.


7. This kind of joint is present in the elbows, knees, fingers andtoes.


8. A ___________ is the place where two or more bones areconnected to each other.

a. ligament b. joint c. skeleton

9. The ____________ fastens bones together.

a. ligament b. joint c. muscle

10. This kind of joint allows you to curl your fingers.


V. MUSCLES

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A. DIRECTIONS: Write V if the muscle movement described isvoluntary and I if it is involuntary.

_______ 1. Fred can shoot a basketball.

_______ 2. Gary blinked when dust entered his eye.

_______ 3. Henry shivered when he entered a cold room.

_______ 4. Ian ran on the track field.

_______ 5. Joe sneezed when he went into a dusty closet.

B. DIRECTIONS: Write a on the blank if the underlined words

make the sentence correct. If it does not, write the word on the blankthat would make the sentence correct.

_____________ 1. Muscles that make your heart beat arevoluntary muscles.

_____________ 2. Proper stretching helps keep muscles healthy.

_____________ 3. Muscles are connected to bones by tissuescalled ligaments.

_____________ 4. When a muscle relaxes, the musclebecomes shorter and thicker.

_____________ 5. Ligaments hold organs of the body andare slightly thinner than tendons.

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Grade3_1st Q Science

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