SC F1 Ch1 Exercise.doc

Science: Form 1 Chapter 1

SCIENCE: FORM 1Chapter 1: Introduction to Science

1. Which of the following is the best definition of science?

A The study of natural phenomenaB Thoughts of scientistsC Knowledge obtained from experimentsD Hypothesis for an investigation carried out

2. Which of the following is an example of a natural phenomenon?

A A high rise buildingB A child growing into an adultC The use of computers and satellitesD A lake becoming a recreational place

3. The following are the steps of a scientific investigation. Which step shows whether the hypothesis can be accepted or rejected?

A At the time the experiment is carried outB When making a conclusionC When analyzing dataD When planning the investigation

4. Which of the following is the purpose of having a ‘control’ in an experiment?

A To control the hypothesis madeB To ensure that the data collected is accurateC To repeat the experimentD To compare the changes that occurs during the experiment

5. Table 1 shows the volume of different quantities of marbles found using the water displacement method.

Quantities of marbles

Volume (cm3)

36

918

Table 1

Predict the volume of 8 marbles.

A 10cm3

B 12cm3

C 20cm3


D 24cm3

6. What is the device used by a doctor to listen to a patient’s heartbeat?

A StethoscopeB PeriscopeC TelescopeD Microscope

7. Which of the following is used to observe tiny objects?

A StethoscopeB PeriscopeC TelescopeD Microscope

8. Which apparatus can help us pour water into a burette?

A Boiling tubeB FunnelC Conical flaskD Pipette

9. What is the SI unit for weight?

A PoundB GramC OunceD Newton

10. Which of the following is used to measure 9.5cm3 of a solution accurately?

A Measuring cylinderB BeakerC Test tubeD Burette

11. The average of three readings for the diameter using an external caliper is 4.36cm. What is the average diameter of that beaker?

A 4.37cmB 4.4cmC 4.38cmD 4.375cm

12. Which of the following can be measured using a displacement can?

A The volume of a basketballB The volume of a salt solutionC The volume of an irregular object


D The volume of a very small object

13. Which of the following prefixes is used to denote the biggest value?

A MicroB MegaC KiloD Giga

14. Which of the following is prefix ‘Mega’?

A

B

C 1 000D 1 000 000

15. Which of the following are steps in a scientific investigation?

I. ObservationII. Interpreting dataIII. Suggesting a hypothesis

A I and II only

B I and III onlyC II and III onlyD I, II and III

16. Diagram 1 shows the eye positions when taking a reading of the length of the glass rod.

Which of the above eye positions is correct?

A PB QC RD S

17. What influences the weight of an object?

I. The force of gravity acting on itII. The mass of an objectIII. The amount of matter in it

A I onlyB I and III onlyC II and III onlyD I, II and III


18. What is the approximate area covered by the leaf?

A 4cm2

B 5cm2

C 6cm2

D 7cm2

19. Diagram 2 shows a measuring instrument.

Which of the following is measured by the instrument above?

I. Mass of objectII. Volume of waterIII. Weight of object

A I only

B I and III onlyC II and III onlyD I, II and III

20. The flow chart below shows a section of the steps in a scientific investigation.

What are the stages involved in X and Y?

X YA Collecting data Forming

hypothesisB Forming

hypothesisCollecting data

C Collecting data Interpreting data

D Interpreting data

Writing report

21. Which of the following is not done during a scientific investigation?

I. Record data honestly.


II. Make a conclusion based on the experimenter’s will.

III. Analyze the data based on what is expected.

A I and II onlyB I and III onlyC II and III onlyD I, II and III

22.W: Collecting dataX: Analyzing dataY: Determining variablesZ: Interpreting data

Based on the above information, arrange the steps in the correct order for a scientific investigation.

A W, X, Z, YB Z, Y, X, WC Y, W, Z, XD Y, Z, W, X

23. The information shows the steps in a science process.

J- Draw conclusion

K- Make a hypothesis

L- Identify the problem

M- Gather and arrange the facts and evidences

N- Test the validity of the hypothesis through experiments

Rearrange the steps.

A J K L M NB K N M L JC LJ M KND LMKN J

24. Diagram 3 shows an experiment.

Diagram 3

Which of the following may affect the time of one oscillation?


A The type of string usedB The length of the pendulumC The mass of the pendulum bobD The material of the pendulum bob

25. The following information is related to a measurement.

Affected by gravity

Measuring unit: Newton

Which if the following is the measuring tool for this measurement?

A Spring balanceB Beam balanceC Lever balanceD Electronic balance

26. Diagram 4 shows the volume of glass marbles and iron nail.

Diagram 4

What is the volume of one glass marble if the volume of the iron nail is 5cm3?

A 10cm3

B 25cm3

C 20cm3

D 30cm3

27. Diagram 5 shows the steps to measure the volume of the cork.

Diagram 5

Rearrange the steps.

A K L MB L M KC M K LD K M L


28. The diameter of a test tube is measured using an external caliper and its reading is shown in Diagram 6.

Diagram 6

What is the radius of the test tube?

A 0.5cmB 1.0cmC 1.7cmD 2.0cm

29. The mass for marbles P, Q, R and S respectively is shown in Table 2.

Marble P Q R SMass (g)

2.1 2.3 1.9 2.1

Table 2

What is the average mass of these marbles?

A 2.0g

B 2.1gC 2.2gD 2.3g

30. Diagram 7 shows a curve.

Diagram 7

The length of the curve in the diagram can be measured by using

A vernier calipersB a micrometer screw gaugeC a piece of thread and a rulerD a wooden block and a ruler

31. Diagram 8 shows a leaf.

Diagram 8

Which of the following can be used to determine the area of the leaf?


A Map measuring instrumentB External calipersC Lever balanceD Graph paper

32. Five erasers of the same size are put into a measuring cylinder that contains 30cm3 of water. The new reading of the water in the measuring cylinder is now 40cm3. What is the volume of each eraser?

A 2.0cm3

B 2.5cm3

C 3.0cm3

D 3.5cm3

33. A pupil wants to measure the length of a winding road on a map. Which of the following should the pupil use?

I. External calipers and rulerII. Thread and rulerIII. Opisometer

A I and II onlyB I and III onlyC II and III only

D I, II and III

34. Diagram 9 shows a hazard symbol.

Diagram 9What is an example of a substance that shows this symbol on its container?

A Radium B SodiumC Copper (II) sulphateD Concentrated sulphuric acid

35. Which symbol must be present on a bottle of thinner?


36. What is the purpose of putting a piece of white paper of filter paper behind the measuring cylinder while taking a reading?

A To avoid reflection of light B To take the readings easilyC To determine the meniscus of the liquidD To avoid dispersion of light

37. Physical quantity X of an object refers to the quantity of material contained in it. Which of the following is physical quantity X?

A Weight B LengthC Density

D Mass

38. Diagram 10 shows the eye positions to read the mercury level in the measuring cylinder.

Diagram 10

Among the positions at A, B, C and D, which is the right position to take the reading?

39. Diagram 11 shows a measuring cylinder containing a liquid.

Diagram 11

What is the volume of the liquid?


A 10mlB 20mlC 25mlD 50ml

40. Diagram 12 shows a measuring cylinder.

Diagram 12

What is the volume of the liquid?

A 35.5mlB 40.5mlC 45.5mlD 50.5ml

41. Which of the following is not a metric unit for mass?

A gram

B kilogramC milligramD Newton

42. Parts of Bunsen burner are matched with their functions respectively. Which of the following pairs is not correct?

Part FunctionA Air

holeTo control the size of the hole

B Jet To direct the flow of gas to the gas tank

C Barrel To allow gas and air to mixD Base To support the burner

43. Diagram 13 shows the process of burning a chemical by using a Bunsen burner.

Diagram 13

Which of the following precautions must be taken when carrying out the procedure?


I. Use a test tube holderII. Put on safety gogglesIII. Point the test tube away from anybody

nearby

A I onlyB I and II onlyC II and III onlyD I, II and III

44. Diagram 14 shows a label on a chemical substance.

Diagram 14

What should you do when you accidently come in contact with the chemical substance above?

A Wash it away with water immediatelyB Wipe away the chemical using a dry clothC Do not report it to your teacherD Apply some medicated lotion

45. Which of the following is the most suitable tool to transfer a fixed volume of liquid from one test tube to another?

A PipetteB BuretteC Measuring cylinderD Filter funnel

46. Which of the following can give the most accurate measurement for the internal diameter of a rubber tube?

A Ametre ruleB Vernier calipersC Internal calipersD A measuring tape

47. The external diameter of a bottle is 5.0mm and the internal diameter is 4.5mm. What is the thickness of the bottle?

A 5.00mmB 0.5mmC 2.5mmD 0.25mm


48. Which of the following should not be done in the science laboratory?

A Recycle chemical used in the experimentB Handle solid substances using the spatulaC Use a test tube holder when heating substances in the test tubeD Put flammable chemicals far away from the Bunsen burner

49. What is the colour of the flame when the air hole of the Bunsen burner is closed?

A WhiteB GreenC BlueD Yellow

50. Diagram 15 shows the method to determine the volume of material Y.

Diagram 15

Which of the following statements are true about material Y?

I. The volume of material Y is determined by the water displacement method

II. The stone is denser than material YIII. The volume of material Y is (Q-P) cm3

A I and II onlyB I and III onlyC II and III onlyD I, II and III

51. Diagram 16 shows the change in volume of solution X before and after 10 drops of it are released into the beaker.

Diagram 16


What is the volume of one drop of Solution X?

A

B

C

D

52. Diagram 17 shows a swinging pendulum.

Diagram 17The sequence of motion of the pendulum which is considered as one oscillation is

I. R Q P Q RII. Q R Q P Q

III. P Q R QIV. P Q R

A I and II onlyB I and III onlyC III and IV onlyD I, II, III and IV

53. The best way to hold chemical bottle is by the

A baseB stopperC bottle neckD body of the bottle

54. You are required to find the volume of water in a measuring cylinder. Which of the following action can be used to get an accurate reading?

I. Ensuring the correct eye position at the meniscus level

II. Placing the measuring cylinder on a level surface

III. Placing a piece of white paper behind the measuring cylinder


A I and II onlyB II and III onlyC I and III onlyD I, II and III

55. What is the main disadvantage of a laboratory thermometer that prevents its use in measuring body temperature?

A The thermometer is too long for a patient’s comfortB Mercury is poisonous substance and it may harm the patientC The thermometer takes longer than one minute to measure body temperatureD The mercury returns promptly to the bulb

once the thermometer is no longer in contact with the patient’s body


56. Complete the chart to show the comparison between weight and mass.

SIMILARITIESi.

ii.

iii.

DIFFERENCESWeight Aspects Mass

Meaning

SI unit

Instrument for measuring

57. Diagram 18 shows a method used to measure the volume of marble and cork.


Marble CorkDiagram 18

a. State the method used in the above experiment. (1m)

b. State the volume of one marble and cork in the table below. (2m)

Object Volume (cm3)

Marble

Cork

c. A student carried out an experiment to calculate the volume of one drop of water by using a burette. After 30 drops of water were released from the burette, the student records the following reading:

Initial reading of burette = 30.0mlFinal reading of burette = 49.5ml

Calculate the average volume of one drop of water. (2m)


58. Diagram 19 shows various apparatus or instrument used for measurements in laboratory.

P Q R SDiagram 19

a. Based on your observation, state the function of apparatus P, Q, R and S. (4m)

P:

Q:

R:

S:

b. Classify the apparatus or instrumentinto two groups based on their common functions. (4m)


59. a. Find the approximate area of the following figure if the height and width of each square is 1.0cm.


b.


Measure the diameter of the circle and calculate its area by using the formula:

i. Diameter of circle = cmii. Radius, r = cmiii. Area of the circle = cm2

60. A student carried out an experiment to determine the time taken for one complete oscillation of a pendulum hanging from strings of various lengths, as shown in Diagram 20.

Formula of the area of a circle is

, where

r = radius of circle,


Diagram 20

a. State the variables in the experiment.

i. Manipulated variable :

ii. Responding variable :

iii. Constant variable :

Table 3 shows the results obtained.

Length of the string (cm)Time taken for one complete

oscillation (s)

20 0.50

40 0.95

60 1.40

80 1.80

100 2.35


Table 3

b. State the relationship between the time taken for one oscillation of the pendulum and the length of

string.

c. Based on Table 3, draw a line graph.


d. State one inference from the experiment.

e. Based on the graph drawn, predict the time taken for one oscillation if the length of the string is 50cm.

f. What is the conclusion of the experiment?

Another experiment is carried out with a 20cm string to study the relationship between the mass of a

pendulum and the time taken for one oscillation of the pendulum.

Table 4 shows the results of the experiment.

Mass (g)Time taken for one complete

oscillation (s)

20 0.5

25 0.5

30 0.5

35 0.5

40 0.5

Table 4


g. What is the inference from the observation above?

h. What is the conclusion of the experiment?

ANSWERS Science: Form 1

SCIENCE: FORM 1 ANSWERSChapter 1: Introduction to Science

1. A2. B3. B4. D5. D6. A7. D8. B9. D10. D11. B12. C13. D14. D15. D16. C17. A18. A19. A

20. B21. C22. C23. D24. B25. A26. A27. C28. A29. B30. C31. B32. D33. A34. C35. D36. D37. B38. D

39. C40. B41. D42. A43. D44. A45. B46. C47. D48. A49. D50. D51. D52. A53. D54. D55. D

56. i. A type of measurementii. Has own unit of measurementiii. Can be measured with special instrument


Weight Aspects Mass

Gravitational force acting on an object

MeaningAmount of matter in an object

Newton (N) SI unit Kilogram (kg)

Spring balance

Instrument for measuring

Triple beam balance/ Lever balance

57. a. Water displacement methodb. 5cm3; 3cm3

c. 0.65cm3

58. a. P: Measure the volume of a liquid Q: Measure external diameter R: Measure the length of a curved line

S: Measure the volume of a liquidb.

59. a. 79cm2

b. 5.4cm; 2.7cm; 22.9cm2

60. a. i. The length of the stringii. The time taken to complete one oscillationiii. Complete number of oscillation/

Mass of the pendulum bobb. The shorter the length of string, the shorter

the time taken to complete one oscillation.

c.

d. The time taken to complete one oscillation increases as with the length of the string.

e. 1.15sf. The length of the pendulum is string affects

the time taken to complete one oscillation.

g. The time taken to complete one oscillation is not affected by the mass of the pendulum.


h. Mass of pendulum does not affect the time taken to complete one oscillation

SC F1 Ch1 Exercise.doc

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