Chapter 1 Introduction To Science

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Form 1 Science Chapter 1

FORM 1 CHAPTER 1 INTRODUCTION TO SCIENCE

1.

Diagram 1 shows some measuring tools. P

Q

R

……………………………….

……………………………….

……………………………….

Diagram 1

(a) On Diagram 1, label P, Q and R with the following words. External calipers

Triple Beam balance

Thermometer

[3 marks] (b) Draw lines to show the correct match between the measuring tools and their uses. Draw the lines as shown below. Measuring tools

Uses Measure the mass of an object

P

Measure the temperature of an object Q Measure the weight of an object R

Measure the external diameter of an object [2 marks]

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Form 1 Science Chapter 1

2. Diagram 2.1 shows some measuring tools commonly used in the science laboratory. P

Q

……………………………..

………………………………

R

……………………………..

Diagram 2.1

(a) Label P, Q and R on Diagram 2.1 with the words given below. Pipette

Burette

Measuring cylinder [3 marks]

(b) A student wants to measure a fixed volume of liquid, which measuring tool should he use? ……………………………………………………………………………………………………… [1 mark] (c) A student carried out an activity to find the volume of a cork as shown in Diagram 2.2.

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Form 1 Science Chapter 1

mℓ 100

mℓ 100

mℓ 100

90

90

90

80

80

80

70

70

70

60

60

60

50

50

50

40

40

30

30

30

20

20

20

10

10

Cork

Stone

40

10

Diagram 2.2 (i)

Name the method that is used to find the volume of the cork. …………………………………………………………………………………………………… [1 mark]

(ii)

What is the volume of the cork?

[2 marks]

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Form 1 Science Chapter 1

3. A pupil carried out an experiment to determine the time taken for one complete swing of a pendulum as shown in Diagram 3. The time taken for 10 complete swings is recorded and the experiment is repeated using strings of different lengths. Wood pieces

string Length of pendulum

Pendulum bob One complete swing Diagram 3 (a) State a hypothesis for this experiment. ……………………………………………………………………………………………………….. ………………………………………………………………………………………………………. 1 mark] (b) State the variables involved in this experiment. Manipulated variable:

…………………………………………………………………

Responding variable:

………………………………………………………………..

Fixed variable:

……………………………………………………………….. [3 marks]

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Form 1 Science Chapter 1

(c)(i) The time taken for 10 complete swings is shown below. Record the time taken for 10 complete swings in the space provided.

Length of pendulum = 10 cm Second

Time taken = 10 s

Length of pendulum = 20 cm

Second

Time taken = ………….. s

Length of pendulum = 30 cm

Second

Time taken = ………….. s

Length of pendulum = 40 cm Second

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Time taken = ………….. s

5

Form 1 Science Chapter 1

The length of pendulum = 50 cm

Second

Time taken = ………….. s

[2 marks] (ii) Complete the table below by recording the time taken for the various length of pendulum. Calculate the time taken for one complete swing. 10

Time taken for 10 complete swings (s)

10

Time taken for 1 complete swing (s)

1.0

Time taken for one complete swing (s)

Length of pendulum (cm)

20

30

40

50

[2 marks]

(d) Using the table, plot a graph of time taken for 1 complete swing against the length of pendulum.

3

2.0

1.0

[2 marks]

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10

20

30 6

40

50

Length of pendulum (cm)

60

70

Form 1 Science Chapter 1

(e) State the relationship between the length of the pendulum and the time taken for one complete swing. ………………………………………………………………………………………………………….. ………………………………………………………………………………………………………….. [1 mark] (f) Based on the graph in 8(d), predict the time taken for 1 complete swing when the length of the pendulum is 60 cm. …………………………………………………………………………………………………………… [1 mark]

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Form 1 Science Chapter 1

4. Diagram 4.1 shows a method of measuring length.

0

1

2

3

4

5

cm

Diagram 4.1 (a) What is the length of the pencil shown in Diagram 4.1? ……………………………………………………………………………………………………… [1 mark] (b) Mark ‘X’ in the box provided on Diagram 4.1 to show the correct position of the eye in taking the reading. [1 mark] (c) Diagram 4.2 shows a curved line.

Diagram 4.2 (i)

How would you measure the length of the curved line? …………………………………………………………………………………………………. [1 mark] A student carried out an activity to measure the length of the curve shown in Diagram 4.2. The results are shown in Table 4.3. Reading Length of curved line (cm)

1 8.6 Table 4.3

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2 8.8

3 8.7

Form 1 Science Chapter 1

(ii)

Why did the student take three readings? ……………………………………………………………………………………………….... [1 mark]

(iii)

Based on Table 4.3, what is the length of the curved line? …………………………………………………………………………………………………. [1 mark]

(d) What is the SI unit for length? ………………………………………………………………………………………………….…. [1 mark]

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Form 1 Science Chapter 1

5. Diagram 5 shows measuring apparatus P and Q.

P: ………………………….

Q: …………………………. Diagram 5

(a) Label P and Q in Diagram 5. [2 marks] (b) What is the physical quantity that is measured by P: ………………………………………………………………………………………………… Q: ………………………………………………………………………………………………… [2 marks] (c) (i) If an astronaut has a mass of 70 kg on Earth. What will be his mass in space? …………………………………………………………………………………………………… [1 mark] (ii) Explain your answer in (c)(i). …………………………………………………………………………………………………… …………………………………………………………………………………………………… [1 mark] (d) State one difference between mass and weight. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… [1 mark] JPN Pahang 2009

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