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1. Which of the following audio-visual sets of equipment can best project visual materials in a classroom that is difficult to darken?
a. Filmstrip c. Colored materials
b. Opaque projector d. Overhead projector
2. Symbioses is defined by the biologists as individuals of different species living together in intimate association, regardless of whether the association is harmful, neutral, or beneficial. All of the following pairs are examples of symbioses EXCEPT _____
a. ants and aphids c. cats and mice
b. human and tapeworms d. dogs and cats
3. Which of the following statement about atomic structure is NOT right?
a. All atomic of the same atomic numbers are atoms of the same element.
b. An atom can gain or lose electrons without changing its charge.
c. Atoms are mostly empty space.
d. Most of the mass of the atom is concentrated in its nucleus.
4. Which of the following statements is TRUE of nuclear fission?
a. The energy process is identical to that which occurs in the sun.
b. Energy is obtained by getting nucleus of the atoms to break up or split.
c. Matter from the lighter atoms is changed into energy.
d. Scientist can combine lighter atoms to form heavier atoms.
5. All of the following statements about the routinary use of pesticides are TRUE, EXCEPT
a. Due to the widespread use of DDT, a new type of housefly emerged.
b. It results in the evolution of exciting new types of organisms.
c. It may not only kill the intended insects but also those that feed on them.
d. Pesticides tend to become progressively less effective as the organisms become immune.
6. The skull of a person increases in size rapidly during _______
a. puberty b. babyhood c. adolescence d. adulthood
7. Apparently, the loss of weight of objects immersed in a fluid is due to _______
a. Archimedes principle c. Newton’s theory
b. specific gravity d. Buoyant force
8. Metabolism and combustion are chemically similar, they both result in the oxidation of some compounds. If completely oxidized, which of the following foodstuffs would yield the MOST Thermal energy?
a. A cup of ice cream c. A cup of milk
b. A cup of sugar d. A cup of flour
9. In countries where medical skill and a public understanding about health and disease are widespread, which of the following changes are evident?
I. Accidental deaths have decreased.
II. The communicable disease death rate has decreased.
III. Infant mortality rate has decreased.
IV. More people live a full life.
V. People live along enough succumb to degenerative disease.
a. I, II, III c. I, II, III, IV, V
b. II, III, IV, V d. I, II, III, IV
10. Which of the following parts of circulatory system carries digested fats away from the small intestines?
a. Pancreatic duct c. Pulmonary artery
b. Arterial capillaries d. Lacteals
11. When the Sun, Moon and Earth are arranged in this order, what phenomenon is likely to occur?
a. Lunar eclipse
b. Earthquakes
c. Solar eclipse
d. Neap tide
12. When water evaporates, it changes into which of the following states?
a. Solid c. Gaseous
b. Matter d. Liquid
13. Which of the following statements is NOT TRUE about comets?
a. Comets are mostly frozen gases and cosmic dust.
b. Comets glow by their own light
c. Comets generally have elongated elliptical orbits.
d. Comets may go around the sun in any direction.
14. A group of students tried to find out volume would affect the mass and density of a piece of metal. The data are shown on the table below:
|
Trial |
Volume (cm3) |
Mass (g) |
Density (g/cm3) |
|
1 |
10 |
15 |
1.5 |
|
2 |
40 |
60 |
1.5 |
|
3 |
5 |
7.5 |
1.5 |
|
4 |
160 |
240 |
1.5 |
Based on the trials made, which among the following conclusion can be formulated?
I. Density of a material is constant
II. Mass is inversely proportional to volume.
III. Volume is directly proportional to mass.
IV. Density is dependent on mass and volume.
a. III and V b. I and III c. I and II d. I and IV
15. A change in the shape or size of an object can be classified as _______
a. mechanical change c. nuclear change
b. physical change d. chemical change
16. In what state are most matter in the universe?
a. Gas b. Liquid c. Solid d. Plasma
17. Two glass tumblers that are stuck one inside the other may be loosened by –
a. pouring cold water on the outside tumbler after filling the inside tumbler with equally cold water.
b. pouring hot water on the outside tumbler after filling the inside tumbler with equally hot water
c. pouring cold water on the outside tumbler after filling the inside tumbler with hot water.
d. pouring hot water on the outside tumbler after filling the inside tumbler with cold water.
18. A thermometer measures.
a. energy b. heat c. pressure d. temperature
19. The volume and mass for each of five metal pieces are shown in the table below. Which of the metal pieces has the LOWEST density?
|
METAL |
VOLUME (cm ) |
MASS (grams) |
|
Beryllium |
100 |
185 |
|
Calcium |
100 |
155 |
|
Osmium |
10 |
225 |
|
Titanium |
10 |
45 |
|
Zinc |
1 |
7 |
a. Zinc b. Calcium c. Beryllium d. Osmium
20. Which of the following forms of energy travels in waves?
a. chemical energy c. Mechanical energy
b. sound energy d. electrical energy
21. A British physician and bacteriologist, Sir Ronald Ross was awarded the Nobel Prize in medicine for his researches in the _______
a. liquid fuel rocket c. transmission of malaria
b. prevention of hepatitis d. control of cholera
22. When lighted, the energy of the alcohol in a lamp is ________
a. lost while heating is done.
b. transformed from chemical to mechanical energy.
c. transformed from chemical to heat energy.
d. completely destroyed.
23. Which process occurs when dry ice, CO2(s) is changed into CO2(g)?
a. Evaporation c. Sublimation
b. Condensation d. Decomposition
24. The first Filipino who was declared as a national scientist and who has contribute much in discovering local plants that can be use as medicine is ________
a. Dr. Pacifico Marcos c. Dr. Eliseo Kintanar
b. Dr. Henry Moseley d. Dr. Alfredo
25. Two items of similar shapes and weighs are drop simultaneously in a ten-storey building. Which of the following statement is correct about the falling rate of the objects?
a. The shape of the object has a minor effect on the falling rate.
b. The weight of the object has no effect on the falling rate.
c. The distance of the fall has an effect on the falling rate.
d. The resistance of the air has no effect on the falling rate.
26. The El Nino phenomenon which grabbed control of the world’s weather machine is identified by climatologist as
a. landslides, flash floods, warm air currents
b. lack or rains, drought, crop failure
c. heavy downpours, tropical storms in some parts of the earth
d. all of these.
27. A soda-acid type fire extinguisher is recommended for putting out fires which involves burning ____
a. insulation on wires c. dry chemical
b. fats or vegetable oil d. painted woodwork
28. An atom or a group of atom which has an excess/deficiency of electrons is called –
a. electron c. ion
b. proton d. molecules
29. Fossils are most likely to be found in _______
a. Metamorphic rocks. c. Sedimentary rocks
b. igneous rocks d. Ocean floor
30. If a doctor describes a patient as dehydrated, he means that the patient –
a. has a contagious disease c. needs oxygen
b. needs insulin d. has lost a great deal of water
31. Radium was discovered by ________
a. Albert Einstein c. Joseph John Thomston
b. Pierre and Marie Curie d. Albrecht Van Haller
32. A board the space shuttle, astronauts strap themselves to a wall or bunk when they sleep. This is because during a change of shuttle velocity an unstrapped sleeping astronaut would likely slump in to the shuttle wall and be injured. Theses astronauts have to be strapped down because _______
a. they are unable to sleep while floating free in space
b. gravity is weak to have them remain in bed
c. their body function have to be constantly monitored
d. their bodies have inertia
33. Four circular holes of equal size arranged from top to bottom were cut to 2 cm apart into a large plastic bottle. The holes were covered with tape, and the bottle was filled with water. The tape was then removed. Which of the following statements will BEST describe the result?
a. Water from the top hole will squirt out the farthest.
b. Water from each hole will squirt out the same distance from the bottle.
c. The sudden release of water will cause the bottle to collapse.
d. Water from the bottom hole squirt out the farthest.
34. The history of the earth has been divided by scientist into eras. Which of the following show the arrangement of these areas into the proper sequence from the oldest to the most recent?
a. Precambrian, Mesozoic, Cenozoic, Paleozoic.
b. Paleozoic, Cenozoic, Precambrian, Mesozoic.
c. Cenozoic, Mesozoic, Paleozoic, Precambrian.
d. Precambrian, Paleozoic, Mesozoic, Cenozoic.
35. Which of the following is closest to normal body temperature?
a. 32˚F c. 212˚F
b. 50˚F d. 37˚C
36. A change in the composition of a substance resulting in the formation of a new substance is called __
a. nuclear change. c. physical change.
b. mechanical change. d. chemical change.
37. Which of the following statement(s) is/are TRUE?
I. Water in a cup and water in pot at 100˚C have molecules of the same degree of activity.
II. It takes more burning of fuel to produce a pot full of boiling water than to produce a cupful.
III. It unit used in measuring the quantity of heat is the calorie.
IV. A pot full of water has a greater number of active molecules than those a cupful of water.
a. III and IV only c. None of these statements
b. All of these statements d. I and II only
38. Which of the following causes the seasons?
a. The rotation of the Earth about the Sun.
b. The rotation of the Sun about the Earth.
c. The distance of the Earth from the Sun.
d. The tilting of the Earth on its axis.
39. Which of the following statements best explains why copper is the metal most widely used in electrical wiring?
a. It is the best conductor of electricity.
b. It is cheaper than aluminum.
c. It is better conductor than aluminum and cheaper than silver.
d. It has high resistance to electricity.
40. To achieve ecological balance, which of the following sets of components should an aquarium contain.
a. Water, fish c. Water, plants
b. Water, snail, fish d. Water, snail, plants, fish