SCIENCE AND HEALTH 6: III (Part 1-15)

Direction: Read each question carefully and write the letter of the correct answer on your answer sheet.

1. Which theory of the origin of the universe is believed by most scientists?
a. Big Bang Theory c. Big Crunch theory
b. Pulsating Theory d. Steady State Theory

2. Which of the following is a constellation?
a. North start b. Orion c. Sirius d. Betelgeuse

3. Which refers to the brightness of the stars we see?
a. apparent magnitude c. total brightness
b. Absolute magnitude d. intensity

4. In which galaxy is the solar system found?
a. Andromeda Galaxy c. Large Magellanic Cloud
b. Milky Way d. Small Magellanic Cloud

5. Why do winds deflect instead of moving straight to the north or to the south?
a. the earth revolves c. the winds move fast
b. the earth rotates d. the winds move slowly

6. Our sun is one of the many stars in the sky. Compared with other stars, it is only average in size. However, it appears much larger than the others. Why?
a. The sun is brighter than the stars.
b. The sun is closest to earth than the other stars.
c. The sun gives more light than the other stars.

7. Stars appear different in brightness because
a. they give off more light than the others.
b. they are farther than the others
c. they give off less light than the others.
d. they are covered by the clouds.

8. Why do astronauts wear pressure suits?
a. to prevent them from getting hurt
b. to enable them to breathe freely and comfortably.
c. to keep the same air pressure around the body
d. to maintain the pressure inside their bodies.

9. Which of the following describes weather?
a. it tells how hot or cold the air is.
b. It gives the direction of the wind.
c. it measures the speed of the wind.
d. it tells the conditions and changes of the air around us.
10. What is the basis of Philippine climate?
a. speed of the wind c. presence of mountain
b. amount of rainfall d. number of seas

11. Which of these wind systems reach the Philippines?
a. prevailing waterlines c. horse latitudes
b. doldrums d. trade winds

12. Why do sailors avoid the doldrums?
a. because their ships would just stay in a particular area and would not move.
b. because their ships would sail so fast that they may hit the rocks.
c. because their ships would hit polar icebergs
d. both a and c.

13. What is the significance of the Coriolis effect?
a. The winds move from the poles toward the equator to blowing sideward.
b. The trade winds meet together in the inter tropical convergence zone.
c. The wind would blow toward the poles.
d. both a and c.

14. Why does the Philippines have only twos seasons?
a. because it is located in the temperature zone.
b. because of its latitude
c. because it has many mountains
d. because it is surrounded by seas.

15. Which causes heavy rains from June to November?
a. polar easterlies
b. southwest monsoon
c. northeast monsoon
d.horse latitude

SCIENCE AND HEALTH 6: Differentiate the following

46. Convection from conduction
47. Element from compound
48. Kinetic energy from potential energy
49. Nuclear fission from nuclear fusion
50. Mechanical energy from chemical energy.

SCIENCE AND HEALTH 6: Missing compound and formula

Name or supply the missing compound and formula.

31. NaNO2 - ________________ 36. Calcium chloride - _______________
32. CaCO3- ________________ 37. Sodium Chloride - _______________
33. NH3 - ________________ 38. Sucrose - _______________
34. SiO2 - ________________ 39. Baking soda - _______________
35. CH3 COOH - _____________ 40. Acetic acid - _______________

41-45 Modified true or false. Write T if the statement is true and F if it is not, then change the underlined word in the correct form.
41. In conduction heat travels from the sun in stream waves.
42. Heat is always produced when energy transformation occurs.
43. Additives are the materials used to prevent food spoilage.
44. Kinetic energy is considered as the energy in motion.
45.Elements are the simplest substances; they cannot be broken down into simpler substance.

SCIENCE AND HEALTH 6: (Part 15-30)

16. Why is acid rain harmful?
a. because it can bring lots of rain
b. because it can make the surrounding hot
c. because it can contaminate water supply and corrode some materials
d. because it can bring about drought
17. What energy is associated with atomic bombs?
a. chemical energy b. kinetic energy c. light energy d. nuclear energy
18. Which of the following does NOT contribute to energy conservation?
a. Turn off the lights and electric fans as you leave your room.
b. Ride to school with your brothers and sisters in one car.
c. Close all windows as you turn on the air-conditioning unit.
d. Let the water flow as you brush your teeth.
19. Gasoline and rocket fuel store in considered as
a. electrical energy c. mechanical energy
b. chemical energy d. radiant energy
20. Which of the following statement is not true?
a. The total amount of energy remains constant.
b. Energy cannot be created but not destroyed.
c. Energy can be created but not destroyed.
d. Energy can be transformed.
21. Which of the following is true for falling object?
a. Its kinetic energy increases as it falls.
b. Its potential energy increases as it falls.
c. It does not have any energy.
d. Its kinetic energy decreases as it falls.
22. Lighting a match involves all the following energies except __________.
a. mechanical b. chemical c. radiant d. nuclear
23. The ultimate source of energy is the _____________?
a. star b. sun c. fire d. moon
24. Which of the following practices will conserve electricity?
a. Switching on appliances while sleeping.
b. Use of incandescent bulbs for illumination.
c. Turning off all appliances when not in use.
d. Ironing clothes piece-by-piece everyday.
25. A generator has an energy transformation from ___________?
a. heat energy to electrical energy
b. chemical energy to heat energy
c. chemical energy to mechanical energy
d. electrical energy to chemical energy
26. It is an electric energy generated through kinetic energy of a moving water such as that of waterfall or in a dam.
a. hydroelectric energy c. heat energy
b. tidal energy d. chemical energy
27. What is the energy change when you turn on a washing machine?
a. electrical energy to chemical energy
b. chemical energy to mechanical energy
c. chemical energy to electrical energy
d. electrical energy to mechanical energy
28. It is a substance that is made up of two or more elements combined chemically.
a. compound b. element c. complex d. molecules
29. Which of the following particles move freely around the molecules?
a. electrons b. neutrons c. protons d. none of these
30. Which of the following is an example of an element?
a. alcohol b. sodium chloride c. carbon d. kerosene

SCIENCE AND HEALTH 6: (Part 1-15)

Direction: Read each sentence correctly. Write the letter of the correct answer.

1. One of the activities used in processing meat is sugar. Why is sugar used as an additive?
a. Sugar will enhance the appearance of meat.
b. Sugar will add to the nutritive value of meat.
c. Sugar will enhance the taste of meat.
d. Sugar will add the color of the meat.
2. Most of these materials are for maintaining cleanliness at home. Which may be omitted from the list.
a. soap b. detergent c. floor wax d. Lysol
3. Which of the following pairs should NOT be red together in the same shelf at home?
a. Lysol and soy sauce c. Aspirin and Tylenol
b. Fish sauce and vinegar d. soap and shampoo
4. If you like to store some vinegar, what container will you use?
a. earthen jar b. plastic bottle c. metal jar d. clay pot
5. In keeping And storing materials at home, medicines should be placed away from the insecticides. Why?
a. to prevent the materials from expiring
b. to arrange the materials in an orderly manner
c. to prevent insects from entering cabinet
d. to prevent people from using them in the wrong way
6. What danger may arise in the use of pesticides.
a. They can cause respiratory diseases.
b. They can kill all the insects.
c. They cause production of acid rain.
d. They can harm the environment.
7. What are synthetic products?
a. products made from plastics
b. products made from manufactured products instead of natural materials
c. products that have natural properties
d. products made from raw materials
8. Waste that accumulates may _____________?
a. Speeds up the decomposition of non-biodegradable wastes.
b. Become breeding places of pets
c. Allow the flow of rainwater run offs
d. Causes loss of the top oil
9. How the heat transfers in solid material?
a. by waves b. by conduction c. by convection d. by radiation
10. Which of the following does not release heat to the environment?
a. boiling water c. burning of paper
b. turning on the radio d. all of the above
11. Which method of heat transfer involves the movement of heated part of the liquid or gas? a. insulators b. conduction c. convection
12. Silver is better conductor of electricity than copper. But copper is the usual choice to manufacturing electrical wire. Why is that so?
a. Silver is in great demand for jewelry.
b. Silver is also used fro coins.
c. Copper wire is safer than silver wire.
d. Copper is less expensive than silver.
13. Which of the following is the best conductor of heat?
a. wood b. human body c. glass d. metal
14. What is an example of good conductor?
a. plastic b. wood c. metal d. glass
15. What is technology?
a. The science materials that are used by people.
b. The technical assistance
c. The scientific products used in the market
d. The ways people use the materials they discover or invent

SCIENCE AND HEALTH: Test Questions Part 2

Direction: Read each sentence carefully and write the letter of the correct answer.

1. The speed of the earth’s revolution is __________.
a. 356 days b. 365 ¼ days c. 356 ¼ days d. 365 days

2. Which of the following best describes the velocity of a moving object?
a. 60 km/hour b. 60 km/seconds c. 60 km/hour going north d. none of the above

3. Which of the following is not necessary when you want to know the speed of the moving object?
a. the force applied to move the object c. the time it took the object to travel
b. the distance traveled by the object d. both a and b

4. What force an object follow a curved path where in a circular motion?
a. centripetal force c. centrifugal force
b. gravitational force ` d. unbalanced force

5. When can you say that the object is in motion?
a. when it has changed its position from a reference point
b. when it has changed its size and texture
c. when it has changed its size and color
d. when it has magnetized
6. What law of motion is illustrated when one rides in a moving vehicle then the driver steps on the brake pedal and the passengers tend to move forward?
a. law of Inertia c. law of Acceleration
b. Law of Momentum d. law of Interaction

7. When can you say that the object has moved?
a. when its distance from reference point has changed
b. when the direction of an object from reference point has changed
c. when it has changed its position in relation to a reference point
d. all of the above

8. Which of the following will prove that running water has force?
a. objects are destroyed by water c. objects are carried away by water
b. objects that sink in water d. none of the above

9. Where can you find friction?
a. over a smooth surface c. over a rough surface
b. over a soapy surface d. over a slippery surface

10. Which of these can change the direction of an object?
a. position b. distance c. reference point d. all of these

11. When do we exert the least force? When we use __________.
a. two wheels b. one wheel c. four wheels d. no wheels

12. How does gravity move things?
a. by pushing them upward c. by moving them left and right
b. by pulling them toward the ground d. by tossing them up and down

13. Which home appliances demonstrated centripetal force?
a. gas stove b. washing machine c. television set d. radio

14. Which of the following examples shows speed?
a. 10 km. b. 10 seconds c. 10 km/second d. 10 km/second-north

15. A truck traveled 240 km in 6 hours. What was its average speed?
a. 70 kph b. 60 kph c. 50 kph d. 40 kph

16. Which of the following can force do?
a. start motion b. change direction of motion c. stop motion d. all of these

17. A big truck and a jeepney are both traveling at a speed of 60 kph. Which would be easier to stop and why?
a. The jeepney, because it has only four wheels.
b. The truck, because it has more and bigger wheels.

c. The jeepney, because it has less mass.
d. The truck, because the gravity helps to stop

18. Why does a car travel faster when going down a mountain than when going up?
a. it is moving toward gravity c. it is moving against gravity
b. it is being pushed by the wind d. it is being pulled by the wind

19. An instrument used to measure or record tremors of an earthquake.
a. thermometer b. barometer c. seismograph d. hygrometer

20. Why is it easier to go down the stairs than to go up the stairs?
a. your body is heavy c. because of friction
b. your body is exerting more force d. because of force of gravity

21. Which is the best thing to do in case of an earthquake?
a. stay inside the building c. stay under a tree
b. stay in an open field or space d. run home as fast as you can

22. Which government agency monitors and issue warnings on volcanic eruptions?
a. PAGASA b. DENR c. BFM d. PHIVOLCS

23. A volcano that has erupted within recent history but may erupt again is said to be _____
a. active b. extinct c. in active d. quiet

24. The _______ scale measures the degree of shaking of the earth using the intensity.
a. Rossi-Forrel scale c. weighing
b. Richer Magnitude scale d. Modified and Mercalli

25. Which is true about volcanic eruption?
a. most of the gas that goes out to the volcano is carbon dioxide,
b. When heavy rain accompanies an eruption, a mudflow may occur.
c. magma is pushed from the earth’s interior to the surface because of a building of temperature in the mantle.
d. none of the above

26. Earthquakes has three qualification excluding ___________?
a. volcanic earthquakes c. gravitational earthquakes
b. landslips d. tectonic earthquakes

27. What do you call that whirling movement of the wind in the counter clockwise direction, sometimes at the rate of 300 miles per hour. It is the most dangerous of all the wind.
a. tsunami b. monsoon c. cyclone d. tornado

28. _______ does not belong to the group of high lands on earth.
a. mountain b. volcanoes c. plateaus d. valleys

29. Which of the following example shows speed?
a. 10 km b. 10 seconds c. 10 km/second d. 10 km/second north

30. Most earthquakes and volcanic eruptions occur in the ___________.
a. Pacific Ring of Fire c. North America Plate
b. Eurasean-Melanesian Belt d. Arctic

31. Why is the wind cold when the Philippines experiences Northeast monsoon from November to February?
a. because air rises
b. because winds come from a place where it is winter
c. because winds come from equator
d. because winds come from ocean

32. We experience different seasons in a year because ____________.
a. of the rotation of the earth
b. the earth revolves around the sun
c. of the different pressures in the atmospheres
d. it follows an orbit as it rotates

33. What causes seasons?
a. revolution of the sun c. revolution of the earth
b. revolution of the moon d. revolution of the clouds

34. To be safe during typhoon, one should ____________.
a. stay inside the house c. stand near the electric post
b. seek shelter under the tree d. run outside the house

35. How does unequal heating of land and water affect the air around us?
a. cloud formation c. air movement
b. good weather d. the air become humid

36. Which of the following weather condition could be observed without using weather instrument?
a. wind speed b. cloudiness c. temperature d. air pressure

37. During daytime the wind blows from _____________.
a. the sea to the land c. the land to the sea
b. the sea to the sea d. the land to the mountain

38. if you are lost in the middle of the ocean, the best thing to use to find your direction is the __________.
a. gun b. compass c. mirror d. binocular

39. The outermost layer of the earth.
a. core b. clouds c. crust d. mantle
40. What is the meaning of fair weather?
a. A few clouds are present but there will be no rain
b. These will be heavy rain and strong winds.
c. Clouds are present and may produce rain.
d. It will rain during the day.

41. The ocean the largest body of water on earth covers almost ______ of its surface.
a. 11% b. 17% c. 71% d. 77%

42. It is the hottest layer of the earth.
a. crust b. core c. mantle d. crustal plate

43. What can change the features of land?
a. rain b. thunder c. earthquake d. lightning

44. Which of the following best describes a landslide?
a. loose rocks falling over a mountain
b. giant waves in the ocean
c. some parts of the ground open up
d. both a and b

45. What is the effect of the southwest monsoon in the Philippines?
a. cold wind but little rain c. warm wind and dry season
b. warm wind and thunderstorms d. heavy rains and typhoons

46. When a tsunami occurs, which of the following places may be affected?
a. plateau b. valley c. mountain d. coastal area

47. What is the main cause of weather changes?
a. water cycle c. the earth’s ocean
b. the movement of air d. unequal heating of the earth’s surface

48. Which of the following natural phenomena takes the longest period of time?
a. weather b. climate c. monsoon d season

49. Why does the earth’s crust move?
a. The earth’s crust is divided into parts, which are separated by water.
b. The water part of the earth is bigger than the land part.
c. It lies on the liquid part of the mantle, which is always in motion.
d. It lies just above the earth’s core, which is very hot.

50. Why there is magma in the interior of the earth?
a. The interior of the earth is cool, so racks harden.
b. The interior of the earth is too hot, so rocks melt.
c. There are different kinds of rocks in the interior of the earth.
d. The presence of the earth melts the rocks.

SCIENCE AND HEALTH: Test Questions 5

V. Match Column A with Column B.

A B
1. Generator a. Energy produced by all kinds of machines

2. Geothermal energy b. Energy in motion
A B
3. Kinetic energy c. A compound of iron and oxygen

4. Rust d. Energy stored in matter

5. Photosynthesis e. Good conductors of heat

6. Chemical Energy f. Highness or lowness of a tons

7. Metals g. A process which transforms radiant energy from the sun to chemical energy

8. Mechanical Energy h. Device that transforms mechanical energy to
Electrical energy

9. Pitch i. Heat transferred from the earth’s molten core to underground deposits of water lying near the earth’s surface

10. Composting j. A process of turning biodegradable materials into odorless and safe organic fertilizer