general sciences

LICENSURE EXAMINATION FOR TEACHERS PRACTICE TEST

GENERAL SCIENCE

1. The school will hold a science fair. You tried to make a project but failed. The next thing you do is a.

to ask your father to do it for you

b.

not to submit a project anymore

c.

to try and try until you produce one

d.

to tell your teacher that you can’t make one

2. A medium sized egg has a mass of 67.5 grams. What is the average mass of one egg in kg? a.

0.000675 kg b. 0.00675 kg

c. 0.0675 kg d. 0.675 kg

3. Before inventing the incandescent bulb, Thomas Alva Edison made the experiment repeatedly. What step of scientific method was shown? a.

Tentativeness

b.

Drawing the final conclusions

c.

Superstitions

d.

Curiosity

4.

Which of the following is NOT TRUE in the definition of science?

a.

Body of knowledge and theory

b.

Discontinuing of explanation of universe

c.

Collection of facts

d.

Systematic and meaningful patterns

5.

Which unit of measurements is NOT USED for measuring volume?

a.

Liter

b.

cm2

c.

cm3

d.

Gallon

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6. An irregularly-shaped solid was drop in a graduated cylinder which has a read of 40 cm3. The water rose to 45 cm3. What is the volume of the solid? a.

5cm3

b.

5cm

c.

5cm2

d.

5cm6

7. Jericho wants to know the mass of a piece of metal. What instrument should he use? a.

Spring balance

b.

Equal-arm balance

c.

Graduated Cylinder

d.

Platform balance

8. Your sister has a fever and you want to know her body temperature. What apparatus will you use? a.

Graduated cylinder

b.

Room thermometer

c.

Clinical thermometer

d.

Laboratory thermometer

9.

What is the standard unit of mass in metric?

a.

Meter

b.

Kilogram

c.

Kilometer

d.

Pound

10. Which of the following branches of science deals with the study of matter, energy and their transformation? a.

Chemistry

b.

Physics

c.

Biology

d.

Genetics 2

11. What scientific attitude must a person posses in seeking answers to things in which he is greatly interested? a.

Open-mindedness

b.

Flexibility

c.

Curiosity

d.

Resourcefulness

12. Which one of the following is the mental attitude that acts from sound reasoning? a.

Scientific method

b.

Scientific attitude

c.

Scientific mind

d.

Scientific skills

13. Joshua respects the ideas and opinions of his classmates. He is a.

open-minded

b.

curious

c.

flexible

d.

investigative

14. Jenny wants to know the length of the table. What instrument will she use? a.

Spring balance

b.

Graduated cylinder

c.

Ruler

d.

Thermometer

15. Joy learned in school that fertilizers affect the growth of plants. She wanted to know how the amount of fertilizer used affects its growth. Which of the following should she do? a.

Ask her science teacher the correct answer.

b.

Conduct an experiment to find out.

c.

Look for the correct answer.

d.

Write the Bureau of soils. 3

16. Michael saw some big crabs crawling on the sand. He wandered where they came from so he tried investigating. a.

Concern for living things

b.

Creativity

c.

Curiosity

d.

Responsibility

17. Which of this concept is always considered by the scientist? a.

Accurate observations are necessary to recognize problems.

b.

Events in nature do not occur in a predictable way.

c.

Experiments provide information that will always support prediction.

d.

Predictions do not point the way to possible solutions to a problem.

18. Which of the following is a technological innovation in the field of communication? a.

Fiber Optics

b.

Genetic engineering

c.

Radioactive Dating

d.

Tissue Culture

19. You have identified the problem in your experiment, what is the next step? a.

Formulate the hypothesis

c. Gather relevant data

b.

Formulate the conclusion

d. Test the hypothesis

20. How are the terms experiment and scientific method related? a.

The scientist performs experiment.

b.

The scientist solves problem in a logical and scientific manner.

c.

A scientific method of solving a problem may include doing an experiment.

d.

An experiment proves and disproves a hypothesis.

21. If a figure of big magnitude is to be handled mathematically, it is wise to use a.

conversion units

c. scientific notation 4

b.

extrapolation

d. square root

22. Which of the following is NOT TRUE about science and technology? a.

Science is an organized knowledge about environment.

b.

Science taught man the relationship of living things with their environments.

c.

Technology helps improve man’s life.

d.

Technology can provide all the solutions to the problems of the society.

23. Which of the following is considered as technology? a.

Production of antibiotics

b.

Invention of calculator

c. Invention of computer d. All of the above

24. Why is the planet earth NOT thrown away by its orbit? a.

It is controlled by its fast revolution.

b.

There is a path that holds it firmly.

c.

The size is just right to maintain its distance.

d.

The sun’s gravitational pull and inertia put it.

25. The annual journey of the earth around the sun is called a.

rotation b. revolution

c. transition d. precession

26. What is the point in the earth’s orbit nearest to the sun? a.

Equinoxb. Solstice c. Aphelion

d. Perihelion

27. What is the inclination of the Earth’s axis? a.

33.5°

b.

43.5°

c.23.5°

d.63.5°

28. Why does the sun rise in the east and set in the west? a.

The earth rotates west to east

b.

The earth revolve counterclockwise

c.

The earth revolve east to west

d.

The sun rotates from north to south 5

29. A planet’s elliptical orbit means that the planet a. b.

keeps the same distance is very near the sun

c. is very far from the sun d. gets nearer and farther from the sun

30. When the vertical rays of the sun strike the equator, the whole earth will have a.

equals day and night

b.

longer days and shorter nights

c. longer night an shorter days d. shorter nights and shorter days

31. In summer, we see the sun rise early and set late. Why? a.

The tilt is neither away or toward the sun.

b.

The tilt of the axis is away from the sun.

c.

The tilt of the axis is toward the sun.

d.

The tilt is changing in degrees.

32. The seasons of the year change mainly because of a.

changing wind direction in summer and winter.

b.

changing speed of earth’s revolution.

c.

the inclination of the axis and revolution.

d.

the elliptical orbit of the earth and revolution.

33. Exactly how long does it take for the trip around the sun? a.

365 days, 5 hours, 48 minutes, 46 sec

b.

362 days, 5 hours, 46 minutes, 45 sec

c. 365 and ¼ days d. 364 ¼ days

34. What dangerous rays kill space travelers? a. b.

X-rays Radio waves

c. Gamma rays d. Cosmic rays

35. Which satellites are sent to explore other planets like Mars and Venus? a.

Weather satellites

b.

Navigation satellites

c. Space Probe satellites d. Communication satellites 6

36. Which cell produce electricity in spaceship? a. b.

Fuel cells

c.

Nuclear cells

d.

Atomic cells

Solar cells

37. What organisms may be taken along in the space flights as a source of oxygen? a.

Protozoan

b. Fungi

c. Algae

d. Bacteria

38. What fuel rises from rockets? a.

Kerosene

b. Helium

c. Nuclear power d. Oxygen

39. When the moon is passing the point of its orbit directly between the earth and the sun and it cannot be seen, this phase of the moon is a.

Full moon

b. Crescent c. Gibbon

d. New moon

40. An imaginary line at 23 ½ north latitude is called a.

Tropic of Capricorn (S)

b.

Tropic of Cancer (N)

c. Arctic Circle d. Antarctic Circle

41. It is the length of time between two consecutive vernal equinoxes - 365 days, 5 hours, 48 minutes, 46 seconds. This year is known as a.

Sidereal year

b.

Calendar year

c. Solar year d. Tropical year

42. The sun never sets at summer time in this part of the earth a.

Northern hemisphere

b.

Southern hemisphere

c. North of Arctic Circle d. South of Antarctic Circle

43. On two occasions of the year, day and night are of equal length everywhere in the earth. Such occurrence is called a. b.

equinox contour Lines

c. summer solstice d. contour intervals

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44. On topographic map, the numerous fine brown lines which clearly indicate the landforms that shows variations in elevation are a. b.

index contours

c. bench marks

contour lines

d. contour intervals

45. To earth scientists, the most important features on a map are the landforms that shape the earth’s surface and are shown in a. b.

Hydrographic maps Geologic maps

c. Radioactivity maps d. Contour Interval

46. Which of the following IS NOT mechanical weathering? a.

Water seeps into cracks in rocks and then freezes and expands.

b.

Thin flakes or curved scales peel off due to temperature changes.

c.

The roots of plants work their way into small cracks of rock.

d.

Minerals are continuously removed from soil and rock by solution.

47. A less obvious but equally-destructive form of soil erosion is called sheet wash. This occurs when a. each gully enlarges with energy rain until a series of miniature canyons are produced. b.

water washes out small gullies running up and down slopes.

c.

water strips away exposed topsoil lowly and evenly.

d.

topsoil exposed area is blown away as cloud of dust and drifting sand.

48. Which process IS NOT intended primary to decrease soil erosion? a.

Strip cropping

b.

Contour plowing

c. Soil creep d. Crop rotation

49. Water dripping continuously from the cave will eventually produce a long ice like deposit of calcites which hangs from the roof. This is called a.

Stalactite

b. Stalagmite

c. Sinks

d. Geode

50. The ground water which accumulates above the aquifer underground has many sources. Which of the following is a source of this kind of water?

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a. b.

Flood water

c. Connate water

Meteoric water

d. Magnetic water

51. A type of hot spring that, at intervals, throws steam and water high in the air is known as a. b.

geyser hillside spring

c.

alkali spring

d.

mud flow

52. Faulting frequently forms like basins in the depression between tilted rocks. This type of lake is formed through the process called a. b.

glacial action

c. volcanic action

river action

d. diastrophism

53. Basins that became partly or completely filled with fresh and decayed vegetation, sediments and water called a.

ponds b. swamps

c. Lakes

d. playas

54. Which IS NOT considered a composition of true pure dry air? a.

Nitrogen

b. Oxygen

c. Carbon dioxide

d. ozone

55. Sometimes a layer of warm air exists above a layer of cool air next to the ground and it traps the polluted air because the upper warm air acts as a lid to prevent it from being carried away. This condition is called a.

temperature inversion

b.

temperature immersion

c.

fountain layer

d.

ozone layer

56. A type of barometer used to measure approximate altitude above the earth’s surface is the a.

barograph

b.

altimeter

c.

mercurial barometer

d.

aneroid barometer

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57. Because of the earth’s rotation on air movement, the path of things that move over the earth tends to curve sidewise. This is known as a. coriolis effect b. doldrums c. circumpolar whirl d. mountain breeze

58. At night, the land cools faster than the water, then the wind blows from the land towards the water. This is known as a. sea breeze b. land breeze c. valley breeze d. mountain breeze

59.

All of the following instruments are used to measure humidity in the air except

a. hydrometer b. hygrometer c. wet and dry bulb thermometer d. psychrometer

60. Thin, feather like clouds with a delicate appearance, frequently arranged in bends across the sky sometimes called mare’s tail is a. cirrostratus stratus

b. cirrocumulus

c. cirrus

d.

61. Some kind of microscopic particles are required upon which the water may collect and condense known as condensation nuclei. An example is a. dust b. smoke c. salt particles d. all of the above

62. A type of front is formed when moving cold air mass wedges its way under a warm air mass. It is called

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a. cold front b. warm front c. stationary front d. violent front

63.

One valuable electronic weather instrument is radar. What is it used for?

I. To give the precise location and extent of storms II. To tract hurricane III. To measure the speed of high altitude air IV. To predict earthquakes a. I & II

b. I, II, & III c. II, III, & IV d. II & IV

64. A special property of minerals which gives off light rays after exposure to ultraviolet light is called a. fluorescence

b. phosphorescence

c. luminescence

d. irradiation

65. How can the changes in temperature break rocks? a. Minerals expand and contract at uniform rate. b. Minerals contract and not expand. c. Minerals expand and do not return to their original size. d. Minerals expand and do not contract in unequal amount.

66. a.

67.

Which part of a fold may form a mountain? Anticline

b. Syncline

c. Trough

d. Crest

Which of the changes in the surface of the earth is a chemical change?

a. The edges of the earth’s crust plates bend or rock when they bump each other. b. Rocks under great pressure and temperature become harder, denser and produce new minerals. c. Salt crystal form when water containing dissolved sediments evaporates. d. The rising warm air from ocean gets cold and form the ocean gets cold and forms cloud in the sky.

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68. Suppose you have samples of rocks which are hard, layered and contains small particles of shells or remain of plants and animals. How do you classify these rocks? a. Metamorphic rock b. Igneous rock c. Sedimentary rocks d. A mixture of three types

69. a.

The molten rock material found inside the earth is magma

b. lava

c. extrusive

d. sediment

70. What element makes the 70% of the earth’s crust? a. Oxygen and Silicon b. Sodium and Magnetism c. Iron and Calcium d. Iron and Nickel

71. What natural form changes the rock into a metamorphic rock? a. Cutting force of sea waves b. Extremely high temperature c. Expulsion from volcano d. Erupting force of running water

72. Which of the following planets has NO atmosphere? a. Mercury

73.

b. Earth

c. Venus

d. Mars

In a swimming pool, as we go deeper, water pressure

a.

increases

b.

decreases

c.

stays the same

d.

is balanced

74. What characteristic do air, water and minerals have in common? a.

They contain atoms

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b.

Their atoms are close together

c.

Their atoms are moving at the same speed

d.

Their atoms are separate from great distance

75. Insecticide spray cans are provided with caution labels: “keep in a cool place”. What will happen if these cans are stored in a hot environment? a. The can will burst. b. The can will collapse. c. Nothing will happen to the can. d. The can will corrode faster

76.

If water pressure decreases when depth decreases, we can say that

a. water pressure is proportional to depth. b. water pressure is inversely proportional to depth. c. water pressure is independent of the depth. d. depth is dependent on the water pressure.

77. Due to the sinking of the faulting in the islands, huge sea waves rose and swept four towns into the sea. These are called a. Tsunamisb. Isostasies C. Sea quakes

d. fissures

78. What instruments detect earthquakes? a. Barometer

b. Clinometer

c. Seismograph

d.Thermograph

79. What happens when air is heated? a. It remains the same. b. It expands and rises. c. It remains at sea level. d. It expands and moves down.

80.

The nearest galaxy to the Milky Way is

a. Andromeda b. Sirius 13

c. Large Magellanic Cloud. d. Cygnus

81.

A mountain cannot be formed by

a. volcanic eruption b. folding c. faulting d. weathering

82. We usually feel uncomfortable during humid days. A humid day is a condition in which air is a. warm and dry b. warm and moist c. cold and moist d. cold and dry

83.

Which process involves chemical weathering?

a. Oxidation b. Hydration c. Carbonation d. all of the above

84. Some homeowners cover their concrete fences with creeping plants. What would be the effect of those plants on the concrete fences? a. These plants will decorate on the fences. b. The growth of the plants inside crevices can split the rock apart. c. These plants produce weak acids which can dissolve and break down concrete fences. d. The growth of the plants can cause the rocks to move closer.

85.

Which of the following statements is true about water?

a. It is denser at 10C.

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b. It is denser at 50C. c. It is denser between 60C-70C. d. It is denser at 85C.

86.

Why do fogs disappear the moment the sun comes out?

a. The water droplets that make up the fog change to visible vapor as they are warmed by the sun. b. The water droplets increase in number as the sun comes out. c. The water droplets become water vapor. d. Fogs become clouds as the sun comes out.

87.

Why is oxygen regarded as the life giving element on earth?

a. It supports burning of material b. It is needed for many chemical processes in the body c. It is given off by plants d. It captures sunlight

88.

In which setup does water drip last?

a. Set up A

89.

b. Set up B

c. Set up C

d. Both B and C

Which soil sample allows water to pass through once?

a. Sand

b. Loam

c. Clay

d. none of the above

90. Which soil sample has the better drainage? a. Sand

91.

b. Loam

c. Clay

d. all of the above

The low-lying flat clouds are

a. stratus clouds b. cumulus clouds 15

c. nimbus clouds d. nimbostratus clouds

92.

What are rocks that form by cooling and hardening of molten materials?

a. Igneous rocks b. Sedimentary rocks c. Metamorphic rocks d. Marble

93.

When the moon is between the earth and the sun, we experience a

a. Lunar eclipse b. Solar eclipse c. Full moon d. New moon

94. The seasons of the earth are caused by the a. elliptical orbit and varying speed of revolution. b. greater distance of the earth from the sun during winter than summer. c. inclination of the axis of rotation to the planet of its orbit and revolution around the sun. d. variation in the amount of energy given off by the sun.

95. Due to lack of rain in Metro Manila, weather scientist produce artificial rain by dropping dry ice from airplane to humidify clouds. The process is known as a. cloud seeding b. precipitation evaporation

c. condensation

d.

96. Energy from the underground hot springs is utilized in power plants located in Tiwi, Albay and Mt. Makiling, Laguna. This energy is called a. nuclear energy b. hydroelectric energy c. dendrothermal energy d. geothermal energy

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97.

The thinning of the ozone layer is due to the use of

a. weed killers and insecticide. b. hydrocarbons like gasoline. c. supersonic transport and aerosol sprays. d. mercury in gold mines.

98. The humid day is a condition in which you feel uncomfortable because the atmosphere is a. warm and moist. b. warm and dry. c. cold and moist. d. cold and dry.

99. Which of the following would be the effect of a rise on carbon dioxide in the atmosphere? a. Cooling of the atmosphere b. Increases in the solar radiation c. Darkening of the air d. Warming of the atmosphere

100. As soon as the planets make its regular trip around the sun, what unit of time is completed? a. Day

b. Night

c. Year

d. Month

101. What phenomenon on the earth is caused by its revolution? a. Day and night b. Seasons c. Weather disturbance light d. Light interference

102. Which part of the atmosphere filters the ultraviolet rays of the sun? a. Stratosphere b. Ozone layer

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c. Exosphere d. Troposphere

103. An eclipse occurs when the sun, moon and earth are in the same line. Which of the following statements explain this? a. Light travels in straight line. b. Light can be refracted. c. The speed and direction of light can be reflected. d. Light can be reflected.

104. Why is the sun the only star which gives much heat and light to the earth? a. The sun is bigger than the other stars. b. The sun is hotter that other stars. c. The sun is closer to the earth than the other stars. d. The sun is moving faster than the other stars.

105. The greenhouse effect refers to the a. absorption of the green color of the sunlight b. reflection of the green color of the sunlight c. release of oxygen by green plants in the atmosphere d. dropping of heat rays by the earth’s atmosphere

106. Which kind of tide occurs during new moon and full moon?

a. Neap tide b. Spring tide c. Seasons tide d. Cresent tide

107. Molten materials expelled outside the earth’s surface are called a. magma

b. lava

c. steam

d. dunes

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108. Clouds help determine the weather conditions. Which of the following clouds is rain producing? a. Cumulus

b. Stratus

c. Nimbus

d. Cumulonimbus

109. Which part of the sun is visible during the total solar eclipse? a. Photosphere b. Corona c. Chromosphere d. Reversing layer

110. What is the difference between the cloud and water vapor? a. A cloud contains bigger water molecules that the water vapor. b. A cloud is found much higher in the atmosphere than the water vapor. c. A cloud is liquid while water vapor is gas. d. There is no significant difference between a cloud and water vapor.

111. What happens when warm moist air in the atmosphere is cooled? a. Water drops are formed b. It expands c. It become less dense d. It becomes lighter

112.

Ozone gas is composed of

a. atomic oxygen b. oxygen gas c. three atoms of oxygen d. two atoms of oxygen

113.

The unequal heating of earth’s surface produces

a. convection current b. convex current c. concave current

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d. radiation

114. The scientific phenomenon best described by the disappearance of either the sun or the moon is the a. eclipse b. full moon c. new moon d. cresent

115. The process of breaking down rocks into pieces is a. carbonation

b. precipitation

c. volcanism d. weathering

116.What is formed in collision of oceanic plates or and continental plates? a. Ridge b. Trench c. Sea clip d. Sea cave

117. The removal of soil from one place and its transport to other place is a. erosion

b. weathering

c. siltation

d. deposition

118. The planet which is clothed in a thick atmosphere of mainly carbon dioxide and has a surface temperature of 480 C is a. Mars

b. Mercury

c. Venus

d. Jupiter

119. The theory that one of the formations of the planets suggest that dust from nebula gather in various gravitational centers and then gather together to form the planets is a. Accretion theory b. Proto-planet theory c. Big bang theory d. Creation theory

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120.The charged particles from the sun thrown to the poles by the Earth’s magnetic field and the impact of the particles excites the molecule of the gases in the upper atmosphere and caused them to gives off red and occasionally blue or violet light. This display of light is called a. Aurora borealis b. Aurora australis c. solar flare d. solar prominences

121. The halo observed during a total solar eclipse is called a. chromosphere b. photosphere c. corona d. sunspot

122. All planets in the solar system a. have the same surface temperature. b. can maintain human life. c. revolve around the sun. d. are exactly same size.

123. The planet which has a bright red or yellowish region is a. Jupiter

b. Mercury

c. Hermes

d. Mars

124. A planet that goes through phases as the moon does is a. Jupiter

b. Neptune

c. Uranus

d. Venus

125. Comets often have eccentric orbits. This means that a. their orbits are circular. b. their time of arrival are unpredictable. c. the sun is closer to one end of the orbit. d. they cannot be seen without a telescope.

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126. The face in which we see the greatest illuminated area of the moon is a. new moon

b. gibbous

c. full moon d. last quarter

127. When the earth passes into the dark part of the moon shadow, there is a a. Lunar eclipse b. A crescent c. Solar eclipse d. An annular eclipse

128. Coral reefs are the work of organisms such are coral and other sea animals and plants. Its form is characterized by a. Close attachment to the shore of an island or continent b. Long narrow strips same distance from the shore with a lagoon between. c. Roughly circular strips which enclose the lagoon d. All of the above.

129. What do fossils tell us? a. From them one can assemble a fairly good picture of ancient animals b. Living things tend to record their own history c. Some reveal what the organism is but a little or nothing about the creature itself d. All of the above

130. The water table is the table below where the surface rocks are saturated with water. Which is NOT a source of ground water? a. Flood water b. Meteoric water c. Connate water d. Magmatic water

131. At night the land cools faster than water. The wind blows from the land towards the water. This is known as a. sea breeze b. land breeze

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c. valley breeze d. mountain breeze

132. The weather disturbance characterized by severe local storms accompanied by lightning and thunder associated with rapidly rising columns of warm, moist air with corresponding down drafts of cooler air is known as a. low pressure area b. tropical cyclone c. tornado d. thunder storm

133. Latitude is measured from a. the prime meridian b. the north pole c. the equator d. Greenwich, England

134. If you close the international dateline going east on the Monday, the next day would be

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a. Monday b. Tuesday

c. Wednesday

d. Sunday

135. Which type of soil can hold more water? a. Sandy soil

b. Sand and humus

c. Pebbles and boulders

d. Sand and gravel

136. Which is a destructive fishing method wherein fishes are driven out of a coral reef by pounding the corals with heavy weight? a. Corals entrapping b. Reef fishing c. Cyanide fishing d. Muro-ami

137. What may occur when there is a severe damage to some parts of the brain due to lack of blood supply? a. heart attack b. rheumatic heart c. stroke d. thrombosis

138. Which can help prevent developing osteoporosis? a. Adequate intake of calcium and vitamin D b. Less exercise to decrease bone density c. Adequate intake of Vitamins A and D d. Estrogen replacement therapy

139. Meteorology is a very important branch of natural science, without which we cannot be informed of forthcoming _______. a. earthquakes b. typhoons c. comets d. meteors

140. In the energy pyramid, which organisms occupy the base? a. herbivores b. heterotrophs c. first order consumers d. producers

141. One approach to lessen vehicular air pollution is: a. removing twenty or more year old vehicles in the street b. ban diesel using cars on the highway c. ask pedestrians to use bicycles d. utilizing the MRT and LRT

142. The theory on the effective use of cellular phones is credited to _______? a. Smart

b. McDonald

c. Bell

d. PLDT

143. Empty bottles and cases of pesticides must be disposed of properly. This is done this way: a. burying containers in deep pits c. burning in a pit

b. washing with soap suds

d. breaking the bottles in waste boxes

144. Environmentalists believe that___________. a. opening dumping sites will solve waste disposal best. b. burying plastic will ease clogging of water canals. c. classifying garbage identify biodegradable and non-biodegradable waste d. burning garbage is the safest approach.

145. Famine in Africa found very malnourished children. Several had poor teeth and sight. This is a sign of ___________________. a. deficiency in Vitamin A and D c. deficiency in Vitamin B

b. deficiency in protein d. deficiency in iron

146. If something gets a positive electric charge, then follows that something else__________. a. become magnetized b. becomes equally negatively charged c. becomes equally positively charged d. becomes negatively charged, but not necessarily equally negatively charged

147. A lunar eclipse occurs when the ____________. a. moon is between the sun and the earth b. moon, earth and sun form a right angle c. earth is between the moon and sun d. sun is in between moon and earth

148. In Moh’s scale, which are the softest and the hardest mineral?

a. talc – diamond b. gypsum – quartz

c. calcite – feldspar d. talc – corundum

149. The energy of a hammer hitting a nail is a. heat

b. chemical

c. electrical

d. mechanical

150. A large depression caused by a collapse of the slopes of a volcano is called a _________. a. basin

b. syncline

c. base level

d. caldera

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-

C

-

A

-

A

-

B

-

A

-

B

-

C

-

A

-

D

-

C

-

A

-

D

-

C

-

B

-

B

-

A

-

C

-

D

-

B

-

B

-

C

-

B

-

D

-

A

-

C

-

A

-

A

-

D

13 1 13 2 13 3 13 4 13 5 13 6 13 7 13 8 13 9 14 0 14 1 14 2 14 3 14 4 14 5 14 6 14 7 14 8 14 9 15 0

-

A

-

A

-

C

-

A

-

A/ B

-

C

-

C

-

A

-

D

-

C

-

C

-

C

-

D

-

D

-

A

-

B

-

D

-

C

-

B

-

B