fourth periodical exam

1. It states that the angle of reflection isequal to the angle of incidencea. Transverse waveb. Longitudinal wavec. Law of reflectiond. Superposition principle

2. It is the angle the incident ray makes with the line perpendicular to the reflecting surfacea. Angle of incidenceb. Angle of reflectionc. Refractiond. Diffraction

3. It is the angle the reflected ray makes with the line perpendicular to the reflecting surfacea. Angle of incidenceb. Angle of reflectionc. Refractiond. Diffraction

4. Refers to the change in the velocity and direction of a wave as it crosses the boundary between two media.a. Angle of incidenceb. Angle of reflectionc. Refractiond. Diffraction

5. It is the bending of waves upon encountering barriersa. Angle of incidenceb. Angle of reflectionc. Refractiond. Diffraction

6. It refers to the stationary wave pattern formed in a medium when two sets of identical waves pass through the medium in opposite directions.

a. Standing waveb. Interferencec. Refractiond. Reflection

7. It is the result of superposing different waves, often of the same wavelengtha. Standing waveb. Interference c. Refractiond. Reflection

8. It is the longitudinal wave that carries energy through a medium. It is produced by vibration of the objecta. Soundb. Lightc. Loudnessd. Pitch

9. The highness or lowness of sound. It refers to the frequency of the vibrating source.a. Soundb. Lightc. Loudnessd. Pitch

10. Change in the frequency of sound due to the relative motion of the source and the receivera. Doppler effectb. Qualityc. Acousticsd. Echo

11. The reflection of sounda. Doppler effect

b. Qualityc. Acousticsd. Echo

12. Distinguishes sound from one another. It depends on the type of vibrating source used.a. Doppler effectb. Qualityc. Acousticsd. Echo

13. An electromagnetic wave, thus, it can travel in a vacuum.a. Light b. Soundc. Reflectiond. Refraction

14. It is the bending back of the light from the surface of an objecta. Light b. Soundc. Reflectiond. Refraction

15. the bending of light as they enter a new mediuma. Light b. Soundc. Reflectiond. Refraction

16. Which of the following devices does NOT make use of electromagnetic waves in its operation?a. camerab. loudspeakerc. television setd. radio set

17. What is true about a nuclear power plant and a geothermal power plant?a. They are renewable sources of energy.b. They use steam to turn turbines.c. They are easy to operate and maintain.d. They give off the same kind of pollutants.

18. Why does the greenhouse effect result to warmer temperature near the surface of earth?a. Clouds trap infrared radiationb. Ozone traps ultraviolet radiationc. Carbon dioxide traps infrared radiationd. Soil absorbs incoming radiation

19. Which statement is TRUE about fluorescent bulbs and incandescent bulbs?a. Fluorescent bulbs are more efficient than incandescent bulbsb. Incandescent bulbs are more efficient than fluorescent bulbsc. The bulbs are equally efficientd. The efficiency of the bulbs cannot be compared

20. A plug connected to a table lamp contains a 3 A fuse. Why is the fuse needed?a. to make it easier for the current to flowb. to increase the resistance of the circuitc. to prevent the lamp from getting too brightd. to protect the wiring from overheating

21. Which form of energy is common among the following objects: lighted bulb, hot soup, burning firewood and electric stove?a. heatb. lightc. electricd. chemical

22. A ray of light is reflected from a plane mirror. The angle of incidence is 20o. The angle between the incident and the reflected ray is

a. 10o c. 30o

b. 20o d. 40o

23. When light hits a smooth surface, it isa. bent around corners c. reflectedb. polarized d. refracted

24. What kind of mirror is used in automobile and trucks to give the driver a wider area and smaller image of the traffic behind him/her?a. concave mirror c. plane mirrorb. convex mirror d. none of these

25. The image in a plane mirror is alwaysa. erect but reversed. c. inverted and reversed.b. erect but not reversed. d. inverted but not reversed.

26. When rays parallel to the principal axis of a concave mirror are reflected, they pass througha. any point on the axis..b. the principal focus.c. the center of curvature of the mirror.d. the point halfway between the focus and the mirror.

27. A stick partly submerged obliquely in water appears to be bent at a point where it enters the water surface. Which one of the following gives explanation for this observation?a. Dispersion of light on entering waterb. Light does not travel in straight line in water.c. Diffraction of light by the surface of the waterd. Refraction of light due to differences in speed of light in air

28. The principle involved in the formation of images on lenses isa. aberration. c. reflection.b. dispersion. d. refraction.

29. A diamond is a brilliant gem becausea. it has low index of refraction. b. most of the light is refracted.c. it has big critical angle. d. most of the light is reflected internally.

30. After a rainstorm, a rainbow may appear in the sky. Which statement explains this observation?a. Raindrops act as prisms separating sunlight into colors.b. The white clouds are actually prisms composed of different colors.c. The colors of the rainbow come from raindrops in the atmosphere.d. When the sunlight is reflected by the ground towards the clouds, it separates into different colors.

31. A piece of coal appears black when viewed in sunlight because it __________ all the light that falls on it.a. absorbs c. reflectsb. disperses d. transmits

32. A red rose appears red because of its ability toa. absorb the red color and reflect all others.b. reflect the red color and absorb all others.c. transmit all colors except red.d. transmit the red color and reflect all others.

33. Diffraction of light means thata. light is a transverse wave.b. light is reflected from a film.c. light bends as it enters a different medium.d. light bends as it passes through a small opening.

34. Which property of light produces bright and dark bands on a screen after light from a source passes through two very narrow slits that are near each other?a. dispersion c. polarizationb. interference d. refraction

35. When sunlight falls on soap bubble, the band of colors seen is due toa. dispersion. c. pigments of soap.b. interference. d. refraction.

Advent School Foundation Inc.The School that Leads to JesusSinipit, Cabiao, Nueva Ecija

INTEGRATIVE SCIENCES 7FOURTH PERIODICAL EXAMINATION

Name: __________________________________________ Score: _______________Date: _________________

1. It is referred to as the land part of the earth.a. Lithosphereb. Hydrospherec. Atmosphered. Biosphere

2. The earth is completely surrounded by a sea of air known as the ________.a. Lithosphereb. Hydrospherec. Atmosphered. Biosphere

3. It is the water part of the eartha. Lithosphereb. Hydrospherec. Atmosphered. Biosphere

4. The layer of the atmosphere nearest to the eartha. Troposphereb. Stratospherec. Mesosphered. Thermosphere

5. The layer in the atmosphere containing the ozone layera. Troposphereb. Stratospherec. Mesosphered. Thermosphere

6. This is the coldest zone in the atmospherea. Troposphereb. Stratospherec. Mesosphered. Thermosphere

7. It is divided into ionosphere and exosphere where the temperature in this layer quickly increasesa. Troposphereb. Stratospherec. Mesosphered. Thermosphere

8. This is the current state of the atmosphere in terms of air pressure, wind, temperature, and moisture.a. Weather b. Climate c. Humidityd. Wind

9. It is the term used to describe the moisture or amount of water in the atmospherea. Weather b. Climate c. Humidityd. Wind

10. This is the movement of air caused by varying density a. Weather b. Climate c. Humidityd. Wind

11. The instrument used to measure the force of air or air pressurea. Barometerb. Barographc. Wind vaned. Anemometer

12. It is the average state of all weather conditions in an area over a long period of timea. Air massb. Anticyclonec. Cycloned. Climate

13. A person who studies the weather a. Meteorologistb. Volcanologistc. Petrologistd. Weather forecaster

14. The instrument used to measure the atmospheric temperaturea. Thermometerb. Anemometerc. Rain gauged. Weather map

15. Measures the wind speeda. Thermometerb. Anemometerc. Rain gauged. Weather map

16. It is used to measure the amount of rainfalla. Thermometerb. Anemometerc. Rain gauged. Weather map

17. The term used to describe the prediction of weathera. Meteorologyb. Weather forecastingc. Star Gazingd. Crystal Gazing

18. The term used to describe a weather condition with a few clouds and no raina. Fine weatherb. Fair weatherc. Rainy weatherd. Stormy weather

19. Means that clouds are present which may produce scattered rains but the greater portion of the day will be sunny and no raina. Fine weatherb. Fair weatherc. Rainy weatherd. Stormy weather

20. Refers to a condition in which rains occur during a greater portion of the day with light to moderate windsa. Fine weatherb. Fair weatherc. Rainy weatherd. Stormy weather

21. Refers to a weather condition characterized by rains and strong winds.a. Fine weatherb. Fair weatherc. Rainy weatherd. Stormy weather

22. It is the movement of water above, on, and below the surface of Earth.a. Water Cycleb. Nitrogen Cyclec. Carbon Cycled. Recycle

23. The stage in water cycle when water turns into gas and goes to the atmosphere.a. Storageb. Evaporationc. Condensationd. Precipitation

24. The stage in water cycle when water vapor accumulates in the atmosphere to form as clouds.a. Storageb. Evaporationc. Condensationd. Precipitation

25. The stage in water cycle when a cloud becomes liquid as in rain or solid as in snow.a. Storageb. Evaporationc. Condensationd. Precipitation

ENUMERATION1-4 TYPES OF WEATHER CONDITION5-8 TYPES OF CLOUDS9-11 STAGES IN WATER CYCLE12-17 LAYERS OF THE ATMOSPHERE18-20 WEATHER FORECASTING INSTRUMENTS

1. It was derived from the Chinese word tai fung which means “great wind.”a. Typhoonb. ITCZc. Tropical cycloned. Tropical depression

2. What do you call the region where the northern and southern hemispheric trade winds come together.

a. Typhoonb. ITCZc. Tropical cycloned. Tropical depression

3. What do you call a tropical cyclone that has maximum sustained surface winds of less than 17 m/s?


4. It is the general term for a non frontal low pressure system on tropical and subtropical waters with definite cyclonic surface wind circulation and convection.


5. PAG-ASA is a government agency for flood contol, astronomical observations, time service, and weather forecasting that predicts weather phenomena and changes caused by atmospheric conditions. PAG-ASA stands for

a. Philippine Atmospheric, Geographical and Astronomical Services Administration

b. Philippine Atmospheric, Geophysical and Astronomical Services Association

c. Philippine Atmospheric, Geophysical and Astronomical Services Administration

d. Philippine Atmospheric, Geophysical and Astrological Services Administration






11. Why do you need to prepare for a typhoon?a. To avoid floodb. To follow orders of authoritiesc. To avoid loss of lives and propertyd. To have things and foods on reserve

12. The following are possible effects of a typhoon except:a. Floodsb. Landslidesc. Fire whirlsd. Damage to agricultural product

13. When there is a typhoon, which of the most reliable source of information?a. Radiob. Cinemac. Neighbord. Magazine

14. What should you do right after a typhoon?a. Get close to dangling and loose power linesb. Go outdoors to see the extent of the damagec. Go to a nearby creek to check the level of waterd. Postpone seeking medical help for injured family members

15. What should you do during a typhoon?a. Stay indoors b. Visit a friendc. Walk in flooded areasd. Watch the water flowing along a riverbank

16. Which of the following is one of the uses of a pilot balloon?a. Records t speed of windb. Classifies tropical cyclonesc. Determines the height of cloundsd. Measures the amount of rainfall

17. How is a typhoon described?a. A calm storm in the West Indiesb. A wind tunnel that breaks up landc. A violent storm in the North Atlantic Oceand. A tropical cyclone in the Northwestern Pacific Ocean

18. Where do typhoons form?a. Cavesb. Mountainsc. Undergroundd. Over a tropical oceans

19. Which of the following t storm warning signals involves winds greater than 51 m/s?

a. 1b. 2c. 3d. 4

20. Which of the following basic weather instruments can determine the direction of the wind?

a. Barographb. Rain gaugec. Hygrometerd. Weather vane

21. Which of the following celestial bodies is made up of ice, rocks, and dust particles?

a. Cometb. Meteorc. Asteroidd. Meteoroid

22. Why does the tail of a comet become longer when it gets nearer the sun?a. It becomes longer because the ice meltsb. It becomes longer because it loses its energy

c. It becomes longer because sunlight strikes the dust trailsd. It becomes longer due to friction while revolving around the sun

23. What do you call the chunks of rocks or metals that hit the earth’s surface?a. Comets b. Meteorsc. Asteroidsd. Meteorites

24. Where can you find the asteroid belt in the solar system?a. Between Earth and Marsb. Between Mars and Jupiterc. Between Jupiter and Saturnd. Between Neptune and Uranus

25. Which of the following is made up of small chunks of rocks or metals traveling in space?

a. Starb. Nebulac. Meteord. Meteoroid

26. What causes the bright streak of light that you see when a meteor enters Earth’s atmosphere?

a. The sunlight reflects the body of the meteorb. The meteor triggers Earth’s magnetic fieldc. There is frictional heating as the meteor enters the Earth’s atmosphered. The meteor disturbs the atmosphere,making the sunlight refract toward

unusual directions.27. What is the region immediately beyond the orbit of Neptune, which contains icy

celestial bodies?a. Oort Cloudb. Kuiper Beltc. Asteroid Beltd. Planetisimal band

28. When does a comet’s tail become visible?a. When it gets closer to the sunb. When it gets closer to the Earthc. When it gets farthest from the sund. When it gets far away from the Earth

29. Which of the following celestial bodies burns up in the atmosphere?a. Meteorb. Asteroidc. Meteorited. Meteoroid

30. What is the hard head of a comet called?a. Comab. Ion tailc. Nucleusd. Dust tai

l1. Which of the following best describes a climate?

a. It indicates the amount of rain that falls in a certain place.b. It is the condition of the atmosphere at a certain time and placec. It is the average weather condition of a place over a long period of timed. It is the condition of the air pressure and wind current at a certain time and

place.2. Temperatures are highest in the tropical zones because

a. Mountains block cool wind b. Ocean currents warm the regionc. Sunlight strikes Earth most directlyd. Temperature increases with altitude

3. Where do continental climates occur?a. In all the continentsb. Only near the equatorc. Only in the Southern Hemisphered. Only in the Northern Hemisphere

4. What is the most common vegetation in regions with a tropical wet climate?a. Desertb. Tundrac. Grasslandd. Rainforest

5. What type of climate has higher evaporation rate than precipitation rate?a. Dryb. Tropical c. Temperated. Continental

6. Which of the following factors does not affect the climate?a. Altitudeb. Latitude c. Longituded. Mountains

7. Two climates that occur at the same latitude may be different because of I. Distance from the polesII. Distance from the equatorIII. Distance from the sea levelIV. Distance from the large bodies of water

a. I and IVb. I and IIc. II and IIId. III and IV

8. What happens to the air after passing over the windward side of the mountain?a. The air becomes cooler and drierb. The air becomes cooler and wetterc. The air becomes warmer and drierd. The air becomes warmer and wetter

9. Which is true about an ocean current that is moving toward the equator?a. It is fastb. It is coldc. It is slowd. It is warm

10. What is usually found on the leeward side of a mountain?a. Seab. Forestc. Desertd. Tundra

11. What is the relationship between altitude and climate?a. The lower the altitude is, the colder is the climateb. The higher the altitude is, the colder is the climatec. The higher the altitude is, the warmer is the climated. There is no relationship between altitude

12. Which of the following is the effect if there is an increase in the altitude?a. Higher humidityb. Lower temperaturec. Lower precipitationd. Lower wind velocity

13. How is the climate of coastal areas different from that of areas of the same latitude located farther inland?

a. Their climates are just the sameb. The coastal areas have cooler wintersc. The coastal areas have cooler summersd. The coastal areas have hotter summers

14. What are the two major factors used in classifying climates?a. Longitude and latitudeb. Latitude and temperaturec. Precipitation and longituded. Temperature and precipitation

15. What happens when the sun heats water and land?a. Water heats more slowly than landb. Land heats more slowly than waterc. Water and land absorb heat at the same rated. Water and land absorb and release heat at the same rate.

16. Which of the following characteristics is true about stars?a. Stars are in a solid physical stateb. Stars are powered by a nuclear fission reactionc. Stars mostly utilize liquids as their main fuel sourced. Stars are massive luminous bodies composed mostly of gas and plasma

17. What property can be used as a good indicator of the surface temperature of a star?

a. Colorb. Massc. Density

d. Distance18. Which of the following types of stars has the highest surface temperature?

a. Red giantb. Red dwarfc. Blue giantd. White dwarf

19. What is the primary fuel source of a main-sequence star in its early stages of life?a. Ironb. Carbonc. Oxygend. Hydrogen

20. Which of the following is the correct sequence of the life of a main-sequence star?a. White dwarf – nebula – main sequence star – red giant – protostarb. Main sequence star – nebula – protostar – white dwarf – red giantc. Nebula – protostar – main sequence star – red giant – white dwarfd. Red giant – protostar – main sequence star – nebula – white dwarf

21. In the early stages of the life of a main-sequence star, what elements is produced during a nuclear fusion reaction?

a. Ironb. Oxygenc. Heliumd. Hydrogen

22. A star can create a supernova explosion when it enters which stage in its life?a. Protostarb. White dwarfc. Main sequenced. Red supergiant

23. What type of force is mainly responsible in the formation of stars?a. Gravityb. Repulsionc. Magnetismd. Electrostatic force

24. The Sun is currently at which stage in a star’s life?a. Protostarb. Supergiantc. Yellow giantd. Main sequence

25. Which of the following stars does not change its position in the sky?a. Siriusb. Polarisc. Antaresd. Betelgeuse

26. How do modern astronomers use the constellations?a. For predicting the futureb. As a map of the celestial spherec. As a light source for their telescopes

d. For describing a person’s character and traits27. Constellations appear to be moving across the sky in a certain period of time.

What is the main reason for this phenomenon?a. The rotation of the Sun on its axisb. The movement of the stars in spacec. The rotation and revolution of the Earthd. The revolution of the stars around the Earth

28. Which of the following is true about constellations?a. Constellations have fixed positions in the sky year roundb. The stars that compose a constellation are actually far apartc. Constellations can be used in predicting the future accuratelyd. Astronomers use about 50 constellationsin the current star map.

29. How is the celestial sphere divided in the equatorial system?a. Into east and west quadrantsb. Into east and west hemispherec. Into north and south quadrantsd. Into north and south hemispheres

30. In highly urbanized areas, light pollution prevents you from seeing the stars clearly. How can light pollution be prevented?

a. Use more energy-efficient lightsb. Improve the installation of lightsc. Develop better lighting technologiesd. All of the above

1. It is the movement of water above, on, and below the surface of Earth.a. Water Cycleb. Nitrogen Cyclec. Carbon Cycled. Recycle

2. The stage in water cycle when water turns into gas and goes to the atmosphere.a. Storageb. Evaporationc. Condensationd. Precipitation

3. The stage in water cycle when water vapor accumulates in the atmosphere to form as clouds.

a. Storageb. Evaporationc. Condensationd. Precipitation

4. The stage in water cycle when a cloud becomes liquid as in rain or solid as in snow.

a. Storageb. Evaporationc. Condensationd. Precipitation

5. This is the current state of the atmosphere in tems of air pressure, wind, temperature, and moisture.

a. Weather b. Climate c. Humidityd. Wind

6. It is the term used to describe the moisture or amount of water in the atmospherea. Weather b. Climate c. Humidityd. Wind

7. This is the movement of air caused by varying density a. Weather b. Climate c. Humidityd. Wind

8. The instrument used to measure the force of air or air pressurea. Barometerb. Barographc. Wind vaned. Anemometer

9. A device that keeps the record of air pressure or force of air together with its changes for a longer period of time

a. Barometerb. Barographc. Wind vaned. Anemometer

10. The instrument that measures wind speed.a. Barometerb. Barographc. Wind vaned. Anemometer

11. What do you call the instrument used to indicate the direction of the wind?a. Barometerb. Barographc. Wind vaned. Anemometer

12. The pile of air that can produce a high pressure area. The opposite of a cyclonea. Air massb. Anticyclonec. Cycloned. Climate

13. It is a low pressure areaa. Air massb. Anticyclonec. Cycloned. Climate

14. It is the average state of all weather conditions in an area over a long period of timea. Air massb. Anticyclonec. Cycloned. Climate





19. It is the compilation of weather data from many collecting stationsa. Thermometerb. Anemometerc. Rain gauged. Weather map

20. It is the term used to call the winds that blow depending on certain air pressure and temperature.

a. Monsoonb. Windc. Raind. Dew

21. It is the monsoon that occurs from mid-December to mid-February whein we experience very chilly early mornings

a. Amihanb. Habagatc. Laod

d. Daya22. The monsoon that occurs from June to November which starts from Australia.

a. Amihanb. Habagatc. Laodd. Daya


24. It is the funnel shaped mass of air extending from a thundercloud to the ground and rotating very fast.

a. Tornadob. Hurricane c. Cycloned. Anticyclone

25.

fourth periodical exam

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