2013 NAT Mock Test Science Grade 6 2013

NAT 2013-Mock TestScience VI

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For item no. 1, study the diagrambelow.

1. The air that we inhale follows asequence along the respiratory tract.When a person eats and breathes atthe same time, which part of therespiratory tract may cause choking,if it fails to block entry of food intothe larynx?A. Pharynx B. EpiglottisC. Trachea D. Bronchi

2. We breathe air during inhalingprocess. Which statement is trueduring this process?A. Lungs get smaller.B. Diaphragm moves up.C. Chest region expands.D. Chest region becomes smaller.

3. The following are common diseasesthat are related to the different bodysystems, EXCEPT for one that isrelated to the respiratory system.Which of the following diseases isrelated to the respiratory system?A. Urinary tract infectionB. HypertensionC. PneumoniaD. Typhoid fever

Refer to the diagram below aboutthe components of the urinarysystem to answer item nos. 4 to 6.

4. Which part of the urinary systemremoves waste from the blood?A. Kidney B. UreterC. Bladder D. Urethra

5. What is the function of the kidney?A. It stores urine.B. It carries urine out of the body.C. It removes wastes from the

blood.D. It gives signal to the brain to

expel the urine from the body.

6. Which organ stores urine before itcan be released outside the body?A. Kidney B. UreterC. Bladder D. Urethra

For item no. 7 , study carefully thepicture below on the parts of the brain.

7. Which part is responsible for higherthought processes?A. I B. II C. III D. IV


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8. Which of the following activities iscontrolled by the autonomic nervoussystem?A. ChewingB. EatingC. WalkingD. Beating of the heart

9. Which illustrations show thecirculatory system and nervoussystem?

A. I and IIB. B. I and IIIC. III and IVD. II and IV

For item 10: Study the diagram below.The arrows represent the flow ofblood.

10. Which sequence traces the path ofblood that is rich in oxygen as itcomes out from the lungs?

A. R.A. R.V. Other body partsB. Other body parts R.A. R. V.

LungsC. L.A. L.V. Other body parts

R.A. R.V. LungsD. L.V. L. A. Other body parts

R.V. R.A.

11. Why does our body need oxygen?

A. Oxygen releases power.B. Oxygen helps give off body

wastes.C. Oxygen helps fight germs in the

body.D. Oxygen combines with digested

food in the body to releaseenergy

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III IV


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Refer to the illustration of the femalereproductive system below to answeritem no. 12

12. In normal situation, in which part isthe egg cell fertilized by the spermcell?

A. 1 B. 2C. 3 D. 4

For item no. 13, refer to theillustration of the male reproductivesystem below.

13. Which part of the male reproductiveorgan produces sperm cells andsecretes the male sex hormone,testosterone?A. 1 B. 2C. 3 D. 4

For item 14, refer to the illustrationbelow:

14. Which of the following adaptationsenable the camel to live in thedesert?A. The hump(s) store(s) water to

help it survive for long periods.B. The long lashes protect the eyes

from the sand.C. The thick fur keeps it warm at

night.D. The leathery skin on the knees

protects it from getting burntwhen it kneels on the sand.

15. Some animals like the water beetleand water spider can stayunderwater for a long time to huntand feed because they _________.

Water beetle Water spider

A. Have air tubes for breathing.B. Have gills to breathe underwaterC. Can trap air with their body parts

for breathingD. Can breathe through their special

nostrils

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16. Animals that are domesticated andare taken care of are called pets.Which of the following group ofanimals are common pets?A. Bird, monkey and catB. Snake, tarantula and dogC. Lion, fish and cowD. Dog, bird and cat

17. Which group of animals consists ofvertebrates only?A. Worm, mollusks, sea urchinB. Jellyfish, spider, squidC. Turtle, snail, lobsterD. Fish, dog, snake

18. Which animals have spiny–skinnedin their body?A. Snails B. SnakesC. Sponges D. Starfishes

19. If chickens have beaks and frogshave long and sticky tongue, whatdo cats have in getting and eatingtheir food?A. Pincher B. TeethC. Paws D. Claws

20. Which of the following plant bearsseeds?

A. Fern B. Moss

C. Algae D. Pine tree

21. Which plant possesses thecharacteristics of a gymnosperm?

A B

C D

22. Which characteristic makes a non-flowering plant like fern differentfrom a flowering plant likegumamela?A. Having dark green leavesB. Having naked conesC. Having edible rootsD. Having spores

23. Which statement is true about thechanges in the two given examplesin the box below?

A. I is physical change, II ischemical change.

B. I is chemical change, II isphysical change.

C. I and II are physical changes.D. I and II are chemical changes.

I. Melting sugarII. Melting candle


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24. Some chemical sprays containingCFC’s used by humans have causedthe thinning and formation of holesin the ozone layer resulting tomore ultraviolet (UV) light to reachthe Earth. Biologists are alarmedthat an increased UV light willharm marine algae. What wouldhappen to the marine animals ifthis continue?

A. Their population wouldincrease.

B. Their population woulddecrease.

C. They would not be affected.D. They would reproduce fast.

25. Which of the following showchemical changes in matter?

I II

III IV

A. I and IIB. III and IVC. I , II and IVD. II only

26. Which of the following can haveharmful effect on environment?

I

II

III

A. I only C. II onlyB. I and II D. II and III

For item nos. 27 and 28 , study thefood web below.

Lion

Deer Plant Goat

Grasshopper Snake

Frog

27. How many food chains are there inthe food web?A. 2 B. 3 C. 5 D. 7

28. In the given food web, whichorganisms are considered assecondary consumers?A. Goat, grasshopper, lionB. Deer, snake, goatC. Lion, frog, snakeD. Grasshopper, frog, lion


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29. Which diagram shows the correctillustration of oxygen-carbon dioxidecycle?

A.

B.

C.

D.

For item no. 30, study the diagram.

30. The diagram above illustrates theinterdependence of plants andanimals for gases. Which pairbelow represents arrows 1 and 2?

A. O2 : NO3

B. CO2 : O2

C. NO3 : O2

D. O2 : CO2

Study the table below then answer itemnos. 31-32 .

STAR DIAMETER COLOR TEMP.

Sun 1390000 Yellow 5,000 0C –6000 0C

Betelguese 402000000 Red Less than3500 0C

Arcturus 41300000 Orange 3500 0C –5000 0C

31. Which is true from the data in thetable?A. The Sun is bigger than

Betelguese.B. The Sun is bigger than Arcturus.C. Of the three, the Sun is the

smallest star.D. Of the three, the Sun is the

nearest star to Earth.

32. What conclusion can you makefrom the above data?A. The brightness of a star depends

on its temperature.B. The dimmer stars have higher

temperature.C. The brightness of a star depends

on its size.D. The smaller is the star, the

dimmer it is.

33. The following are some energyconservation tips each one of usshould observe EXCEPT:A. Use an electric iron during

nighttime.B. For short trips, walk or ride a

bicycle.C. Do not keep the refrigerator

open for a long time.D. Switch off the TV set when

nobody is watching.


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34. During thunderstorms when powerlines are down, people useflashlights as a source ofillumination. Which of the followingchoices illustrates the CORRECTorder of the energy transformationwhen a flashlight is turned on?A. Chemical ---- electrical --- lightB. Chemical ---- light --- electricalC. Electrical --- light ----chemicalD. Electrical --- chemical ---- light

35. What makes Planet Earth uniquefrom other planets?A. It has longest time of rotation.B. It has longest time of

revolution.C. It has no magnetic field.D. It has oxygen that supports the

needs of living things.

36. What happens when the rocksbeneath Earth’s surface undergostress?A. Rocks change to liquid.B. Rocks change in shape and

volume.C. Rocks change into sand

particles.D. Rock change in color and

weight.

37. Judy’s motor was fueled withgasoline to start the engineworking. After a few seconds, themotor moved to a certain direction.What form of energy is produced ?A. RadiantB. ElectricalC. ChemicalD. Mechanical

38. When Benz pushed a box alone, thebox moved in the direction of thepush. However, when Erwin andBenz pushed the box from oppositesides together , the box did notmove.

Which of the following statementsexplain(s) why the box did NOTmove?

A. A only B. B onlyC. C only D. B and C

39. How are the different climates inthe Philippines classified?A. Altitude of a regionB. Presence of bodies of waterC. Amount of heat in a regionD. Amount of rainfall in a region

40. From your study about stars andgalaxies, which of the following canyou infer about the universe?A. The universe is a wonderful

place.B. The universe is very changeable.C. The universe is very cold.D. The universe is very vast.

END OF SCIENCE

Prepared by:

DACELYN O. BOTANAS- MT IITudela Central School, Tudela District

LORNA O. QUILO - MT ISumasap ES, Panaon District

GINA O. SISI - MT IIPanalsalan ES, Sinacaban District

JOSEPHINE O. PACO - MT IIITMIS, Bonifacio District

MARIETTA R. FERNANDEZ – MT IClarin Central School, Clarin District

A. The force of gravity acting onthe box increased when theboys pushed the box.

B. The frictional force between thefloor and the box increasedwhen the boys pushed the box.

C. The force applied by Erwin isequal to the force applied byBenz.


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KEY ANSWER

NAT 2013- Mock Test

Science 6

1. B

2. C

3. C

4. A

5. C

6. C

7. A

8. D

9. B

10.C

11.D

12.B

13.D

14.A

15.C

16.D

17.D

18.D

19.D

20.D

21.B

22.D

23.B

24.B

25.D

26.D

27.C

28.C

29.D

30.B

31.C

32.A

33.A

34.A

35.D

36.B

37.D

38.C

39.D

40.D

2013 NAT Mock Test Science Grade 6 2013

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