Third periodical exams

IMMANUEL SCHOOL OF DAVAONHA ALONG DIVERSION ROAD BUHANGINTHIRD PERIODICAL EXAMINATION

SCIENCE 4

NAME: _____________________________________ SCORE:____________________

DATE : ________________________ TEACHER: MS. JESSEIL PAGATPAT

1.) In which liquid is nail polish soluble?

a. alcohol b. acetone c. oil d. water

2.) Which takes the shape of a glass?

a. clay b. marble c. rocks d. syrup

3.) Cooking oil solidifies because of the cold weather. What will you do to pour it from its container.

a. cool it b. heat it c. freeze it d. condense it.

4.) The particles in matter are always ____________.

a. still b. large c. small d. moving

5.) Why is water called the universal solvent?

a. it has force c. it has strong chemicals

b. it is easily available d. it can dissolve different materials

6.) Salt was dissolved in water. How can you separate the salt from the water?

a. add more salt c. throw the water

b. filter the water d. boil the water and let it evaporate

7.) What happens to air when particles of smoke from cars mix with it?

a. it becomes heavy c. it becomes polluted

b. it becomes fresher d. it becomes richer in oxygen

8.) Instant coffee dissolved in water. What kind of substance is instant coffee?

a. Chemical b. nutrient c. solute d. solvent

9.) All of the following materials are porous except?

a. cotton b. foam c. tissue d. rubber band

10.) A stick of butter has become hard. How can you make it soft?

a. by heating it c. by putting an ice

b. by freezing it d. by putting in water

11.) Mario mixed oil in a glass of water. What did he observe?

a. The oil went below the water c. The oil disappeared in the water

b. The water disappeared in the oil d. The oil went on the surface of the water.

12.) If you mix 30 ml. of alcohol and 30 ml of water, how many milliliters of mixtures would you probably obtain?

PARENT’S SIGNATURE:

a. 30 ml b. 61 ml c. exactly 60 ml. d. slightly less than 60 ml

13.) The plants near the factory are dying due to chemical wastes that are thrown in the soil. Why is this so?

a. the plants lack sunlight c. the soil loses its fertility

b. the plants lack water d. the soil becomes too fertile

14.) Water is liquid because _________________.

a. it has definite shape and volume c. it has molecules that are closely packed

b. it has no definite volume nor shape d. it has definite volume but has no definite shape.

15.) What is produced when two things are rubbed together?

a. current b. electricity c. energy d. friction

16.) Which produces greater friction when rubbed?

a. oil palms b. shiny shoes c. rough stones d. smooth sticks

17.) Which can easily produce friction?

a. plastic b. rocks c. Styrofoam d. wood

18.) Which will produce the least friction?

a. brick c. rocks

b. paper d. sticks

19.) Sonia wants to produce fire but she has no matches. What can she do?

a. cry out for help c. Get candle and rub it against the stones

b. Get two stones and rub them together d. find some twigs and some leaves and pile them up.

20.) Which can be a good source of fuel?

a. plastic b. rock c. rubber d. wood

21.) Which refers to the process where substances are combines with oxygen in the air to produce heat and light?

a. conduction b. combustion c. evaporation d. condensation

22.) Which fuel does NOT belong to the group.

a. coal b. gasoline c. kerosene d. petroleum

23.) Which is the main source of energy stored in the firewood?

a. the sun b. the soil c. the plant d. the people

24.) When substance are heated, they changed in shape but retain their original properties. What kind of changes

is shown?

a. nuclear change b. physical change c. chemical change d. mechanical change

25.) What change will happen to sugar after heating it?

a. nuclear change b. physical change c. chemical change d. mechanical change

26.) What change happens to the ice cube when heated?

a. change in color b. change in smell c. change in phase d. change in chemicals

27.) What do you call the transfer of heat from molecules to molecule?

a. combustion b. condensation c. conduction d. convection

28.) What do you call those materials that allow heat to pass through?

a. conductors b. conveyors c. insulators d. transformers

29.) Which is good insulator?

a. cloth b. copper c. metal d. steel

30.) What do call the cyclical movements of liquids or gases due to alternating heating and cooling?

a. circulation b. combustion c. conduction d. convection

31.) Which is true about heat ?

a. heat travels in air

b. heat travels through convection process

c. water does not allow heat to pass through

d. the process of heating objects thorough circulation is called radiation.

32.)Which is commonly used in putting out fire?

a. cloth b. oil c. sand d. water

33.) What can put out fire caused by a gas explosion?

a. cloth b. oil c. sand d. water

34.) What is the fastest way to stop fire of a burning wooden table?

a. cover it with a wet cloth

b. get sand and throw over it.

c. look for the fire extinguisher

d. call for help from your neighbor

35.) Which is a good practice?

a.play with fireworks

b. leave the stove open

c. play with lighted cigarettes

d. keep a lighted candle away from the curtains

36.) What will you do if your skirt catches fire?

a. cry out loud until someone hears you.

b. keep running until someone sees you

c. run fast until you reach the bathroom

d. roll yourself on the ground until the fire is completely put out.

37.) Why does ice float on water?

a. ice is denser than water c. ice and water have the same density

b. ice is less dense than water d. ice and water do not have density at all

38.) Filtration is the process used to separate___________.

a. fruit salad b. milk and water c. gravel and sand d. soil and iron fillings

39.) Which of the following is a mixture of different gases?

a. air b. mineral c. oil d. water

40.) What will happen to the chemical energy of kerosene when it is transformed to light energy?

a. it will produce heat.

b. it will run into light energy.

c. it will turn into electrical energy.

d. it will turn into mechanical energy.

TABLE OF SPECIFICATION3rd PERIODICAL EXAMINATION

SCIENCE 4

COMPETENCY NUMBER OF

ITEMS

ITEM PLACEMENT PERCENTAGE %

CHANGES IN MATTER

Physical and Chemical

Change

Types of Physical and

Chemical Change

Pollution

Common Household

Products and their uses

Characteristics of

household materials

ENERGY

Types of Energy

13

10

2

3

3

9

1, 2, 4, 5, 11, 12, 14, 27, 28,

37, 38, 39, 40

3, 6, 8, 10, 19, 23, 24, 25,

26, 31

7, 13

9, 35, 36

32, 33, 34

15, 16, 17, 18, 20, 21, 22,

29, 30

32. 5 %

25 %

5 %

7 . 5 %

7 . 5 %

22. 5 %

Total: 40 40 100 %


SCIENCE 5

NAME:_________________________________ SCORE: ________________


Read and analyze each item. Choose and circle the letter of the best answer.

1. Which does not belong to the group?

a. proton b. electron c. atom d. neutron

2. How does the molecular composition of water differ from ice?

a. Both water and ice are composed of compactly packed molecules.

b. Water ice composed of widely arranged molecule while ice has compactly arranged molecules.

c. Water is composed compactly arranged molecules while ice has widely arranged molecules.

d. Both water and ice are composed of widely arranged molecules.

3. In ____________ mixtures, you can still identify the presence of the substance of the mixtures.

a. heterogeneous b. homogeneous c. emulsion d. solution

4. When a solid substance is dissolved in a liquid, a ______________ is formed.

a. solute b. solution c. solvent d. soluble

5. When two liquids are soluble with each other, these solutions are called ______________.

a. alloys b. soluble c. miscible d. solvent

6. The kind of mixture where liquids do not completely dissolve in each other is called ______________.

a. emulsion b. miscible c. soluble d. solute

7. Which is true about metalloids?

a. they are malleable and ductile

b. they are good conductors of electricity

c. they are the substance with dull appearance

d. their conductivity increases as the temperature increases.

8. Why is the presence of CFC or chlorofluorocarbon in the air harmful?

a. it makes the clouds dark.

b. it makes the ozone layer thick

c. it protects the earth from ultraviolet rays

d. it destroys the ozone layer.

9. In what way does burning fuel affect the atmosphere?

a. it makes the air pure


b. it increases oxygen in the air.

c. it reduces carbon dioxide in the air d. it releases harmful chemicals into the air

10. which one is easier to take away from an atom?

a. electron b. neutron c. proton d. iron

11. Which electrical connection will continue to work even if you take away one bulb.

a. series b. parallel c. circuit d. dry cell

12. What will happen to a fuse if there is an overflow of electricity?

a. ring b. explode c. melt d. done

13. Which of the following does not show wise use of electricity?

a. dusting of bulbs

b. opening windows for lightning

c. using octopus connection

d. turning off the TV when not in use.

14. When iron filings are mixed with salt, which would be the best way to separate them?

a. use your fingers to separate them.

b. separate them with the use of a magnet

c. use the fine screen to separate them.

d. heat the mixture gently to separate them.

15. Which of the following is a physical change?

a. burning candle

b. tearing a piece of paper

c. chewing a piece of bread

d. mixing paint with thinner

16. A block of butter to liquid butter

a. melting b. evaporation c. chemical change d. freezing

17. The disappearance of mothballs in a closet.

a. depositon b. sublimation c. evaporation d. condensation

18. The decaying body of an organisms.

a. chemical change b. physical change c. condensation d. sublimation

19. It is the ability to do work. It can be potential and kinetic.

a. energy b. electricity c. work d. force

20. It has a two or more switches and two or more pathways of electricity.

a. series circuit b. two-way circuit c. parallel circuit d. electric circuit

21. Which area is in danger of seawater seeping into the land?

a.Baguio City c. rice terraces

b. a hill d. a small island

22. Which of the following is NOT a natural cause of pollution?

a. forest fire during very hot weather c. lahar flow

b. kaingin d. red tide

23. Which of these processes increases the amount of carbon dioxide in the air?

a. burning garbage only c. using gasoline to fuel a car only

b. forest fire only d. all of the above

24. Which of these processes brings about chemical change?

a. grinding cocoa seeds c. drilling holes

b. exploding firecrackers d. pounding rice

25. In which process is heat removed from the material undergoing a change in state?

a. changing water to ice (freezing)

b. changing ice to water (melting)

c. changing water to water vapor (evaporation)

d. changing water to steam (vaporizing)

26. The expression “dry ice” refers to which of the following?

a. solid ice c. solid water vapor

b. solid water d. solid carbon dioxide

27. Which does NOT cause air pollution?

a. oxygen c. dust

b. carbon monoxide d. fumes from burning garbage

28. Which of the following particles move freely around the nucleus?

a. electrons c. protons

b. neutrons d. none of these

29. A material that lose electrons becomes______________

a. positively charged c. neutral

b. negatively charged d. easily attracted

30. A negatively charged material will _____________ a positively charged material.

a. attract c. neutralize

b. repel d. rub

31. Which of the following is a conductor?

a. glass c. wood

b. human body d. plastic

32. Which of the following is NOT a part of a simple electric circuit?

a. source of electricity c. conducting wire

b. electromagnet d. an electric device

33. What do you call a closed, continuous path through which electrons can flow?

a. resistor b. charge c. circuit d. cell

34. What do you call the process of charging when no contact is made with the charging object?

a. galvanometer c. motor

b. generator d. cell

35. In which of the following is a parallel circuit best used?

a. a string of Christmas lights c. electric home devices

b. street lighting d. all of the above

36. What device converts electrical energy from a battery wired to a toy to make a toy move?

a. generator c. galvanometer

b. motor d. circuit breaker

37. Usually, the number of _______ in an atom is the same as the number of electrons.

a. protons c. electrons

b. neutrons d. nucleus

38. If an atom has more electrons than protons, it has a ________ charge

a. negative c. neutral

b. positive d. no charge

39. When objects have the same charge, they _______ to each other.

a. repel c. move

b. attract d. do not move

40. Which of the following is NOT a good way to deal with garbage?

a. reduce the amount of waste c. recycle into “new” products

b. reuse in another way d. release into the river


SCIENCE 5


ITEMS


PHYSICAL/CHEMICAL

CHANGE

Describing simple

physical and chemical

changes in materials

Conditions/factors that

bring about changes in

materials.

Changes in the

Environment

ENERGY

Describing Static

Electricity

Describing an Electric

Circuit

How Electrical Energy

Produced

Transformation of

Electrical Energy to

other Forms

7

6

6

6

5

5

5

2, 4, 14, 15, 24, 25, 26

3, 5, 16, 17, 18, 27

6, 8, 9, 21, 22, 23

7, 12, 19, 28, 33, 37

13, 20, 29, 34, 38

1, 10, 11, 32, 39

30, 31, 35, 36, 40

17. 5 %

15 %

15 %

15 %

12. 5%

12. 5 %

12. 5 %

Total: 40 40 100 %


SCIENCE 6

NAME:_________________________________ SCORE: ________________


Read and analyze each item. Choose and circle the letter of the best answer.

1. One of the additives used in processing meat and sugar. Why is sugar used as an additive?

a. Sugar will enhance the appearance of meat

b. Sugar will add the nutritive value of meat

c. Sugar will enhance the taste of meat

d. Sugar will add to the color of meat.

2. What property of glass makes it popular material for manufacturing drinking containers?

a. it is brittle c. it is heat-proof

b. it is transparent d. it can be melted

3. What property of steel makes it good construction materials?

a. it is rigid and strong c. it has luster

b. it can be stretched d. it is a conductor of heat

4. Why is plastic considered a very important material?

a. it can be manufactured into many kinds of product.

b. it is easy and cheap to produce

c. it is available anytime

d. it takes a long time to decompose

5. 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

6. Why are metals in their natural form ( except copper ) not used for manufacturing products?

a. they are expensive c. they are difficult to process

b. they were rare d. they are soft and weak

7. What is an alloy?

a. it is a mixtures of different plastics. c. it is a very strong metal


b. it is a mixtures of metals d. it is a rare metal

8. What metals are mixed to form brass?

a. iron and copper c. zinc and tin

b. copper and zinc d. lead and zinc

9. Plastic may be mixed with paper or cloth compressed into thin sheets. What is this sheet called?

a. plastic sheet c. plastic laminate

b. plastic fiber d. plastic pad

10. What is the purpose of adding gelatin when processing food?

a. as emulsifier c. as a coloring

b. as thickener d. as sweetener

11. One way to preserve food is by aseptic packaging. How is this done?

a. freeze the food and dry it before packaging.

b. keep the food dry before packing it.

c. sterilize the food and pack it in sterilized containers.

d. mix additives with the food before packing.

12. 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

13. Which of the following pairs should NOT be stored 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

14. If you like to store some vinegar, what container will you use?

a. earthen jar c. metal jar

b. plastic bottle d. clay pot

15. Silver is better conductor of electricity than copper. But copper is the usual choice for manufacturing electrical wire. Why is this so?

a. silver is in great demand for jewelry.

b. Silver is also used for coins.

c. Copper wire is safer than silver wire

d. Copper is less expensive than silver

16. Gasoline and rocket fuel store

a. electrical energy c. mechanical energy

b. chemical energy d. radiant energy

17. Which of the following is an example of mechanical energy?

a. nuclear bomb explosion c. chemical energy

b. potential energy d. heat and light

18. What is the primary source of the sun’s energy?

a. potential energy c. nuclear fusion

b. chemical energy d. nuclear fission

19. Which of the following statements is NOT true?

a. The total amount of energy remains constant. d. Energy can be transformed

b. Energy cannot be created or destroyed

c. Energy can be created but not destroyed

20. What energy is associated with atomic bombs?

a. chemical energy c. light energy

b. kinetic energy d. nuclear energy

21. Which of the following is true about falling object?

a. Its kinetic energy decreases as it falls

b. Its kinetic energy increases as it falls

c. its potential energy increases as it falls

d. It doesn’t have any energy.

22. A pendulum is swinging back and forth and has kinetic energy at a particular point in path. Which of the following statement is NOT true?

a. Both kinetic and potential energy are decreasing at the same time.

b. The minimum of kinetic energy is Zero.

c. The potential energy increases when kinetic energy decreases.

d. The potential energy is greatest when kinetic energy is the smallest.

23. Which of the following is nonrenewable source of energy?

a. wind c. biomass

b. natural gas d. geothermal

24. Lighting a match involves all of the following energies except.

a. mechanical c. radiant

b. chemical d. nuclear

25. Which of the following does NOT contribute to energy conservation.

a. Turn off the lights and electric fans as you leave your classroom.

b. Let water flow as you brush your teeth.

c. Close all the windows as you put on the air-conditioning unit.

d. Ride to school with your brothers and sisters in one car.

26. Everything in the world is made up of tiny particles called ___________.

a. nucleus c. electrons

b. atom d. cells

27. The number one big source of light and heat energy.

a. moon c. sun

b. stars d. volcanoes

28. During a chemical reaction known as ___________ chemical energy is released.

a. oxidation c. anti bodies

b. antidotes d. energy

29. What change happens when liquid evaporates?

a solid to gas c. gas to liquid

b. liquid to gas d. liquid to solid

30. Evaporation plays some important role something to a new product. The following are the uses of evaporation, except?

a. cooling of perspiration c. production of salt from the seawater

b. distillation of alcoholic beverages d. formation of precipitate like rain and snow

31. Mother pours some juice in a glass with ice. After some time, water droplets appeared outside the glass. How do droplets of water form in the glass?

a. droplets are formed when water in the glass spilled.

b. droplets are formed when water molecules condense on the outside of the glass.

c. droplets are formed when the ice melted and the liquid overflowed.

d. droplets are formed when water in the glass changes to gaseous molecules.

32. Anna poured some vinegar into a bottle. She added some baking soda and covered the mouth of the bottle with a balloon. After the chemical reaction, the balloon inflated. What caused the balloon inflate?

a. formation of precipitate c. formation of a milky substance

b. evolution of carbon dioxide d. combination of two substance

33. Burning of gasoline in a car requires chemical change. The carbon dioxide formed from this reaction affects the environment. What environmental problem occurs if too much carbon dioxide is present in the atmosphere?

a. acid rain c. global warming

b. air pollution d. ozone depletion

34. Which of the following help reduce global warming?

a. forests c. greenhouse gases

b. the ozone layer d. use of refrigerants

35. Which is a physical change?

a. air pollution c. evaporation of water

b. ozone depletion d. formation of acid rain

36. The energy of moving objects is?

a. chemical energy c. nuclear energy

b. kinetic energy d. potential energy

37. Which of the following is not an example of kinetic energy being converted to potential energy?

a. releasing an arrow

b. releasing a compressed spring

c. pulling a plow in the rice field

d. basketball player jumping for a rebound

38. Which energy transformation occurs in an electric iron?

a. heat to light c. heat to electricity

b. light to heat d. electricity to heat

39. Which type of energy uses magma or hot dry rocks to generate electricity?

a. hydroelectric c. nuclear

b. geothermal d. solar

40. Which of the following shows that chemical energy is changed to mechanical energy?

a. lighting of candle

b. switching on/off flashlights

c. using sunlight to dry up clothes

d. an athlete run after drinking water.


SCIENCE 6


ITEMS


PHYSICAL/CHEMICAL

CHANGE

Describing simple

physical and chemical

changes in materials

Conditions/factors that

bring about changes in

materials.

ENERGY

Describe the forms of

energy and their uses i.e

chemical, mechanical,

sound, electrical, radiant,

nuclear

Energy transformed into

another form.

7

8

14

11

1, 7, 8, 9, 12, 14, 15

2,3, 4, 5,6, 10, 11, 13

16-20, 24, 26, 28,29,36-40

21, 22, 23, 25, 27, 30-35

17. 5 %

20 %

35 %

27.5 %

Total: 40 40 % 100 %

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Third periodical exams