7/29/2019 Marking Scheme for Chapter 1 Form 4

1/3

Marking scheme for Chapter 1 Form 4

Paper 2

Question 1 Mark Answer Note

(a) 1 Voltage / potential difference(b) 1 0.5V Must write with the

correct unit (V).

(c) 1 Instrument Y

(d) 1 Parallel in circuit

Question 2

(a) 1 Quantity that can be measured

(b) 1 Zero error

(c) 1 Microampere Reject: Ampere

(d) 1 Subtracting the reading with the zero error

Question 3

(a) 1 Vernier callipers Correct spelling

(b) 1 To measure internal diameter

(c) 1 0.01cm Correct unit

(d) 1 2.55cm Correct unit

Question 4

(a) 1 0.2s Correct unit

(b) 1 -0.4s Correct unit

Reject: 0.4s / 0.4

(c) 1 50.0s(-0.4s)

1 50.4s Correct unit

Question 5

(a) 1 Length

(b) 1 0.9cm Correct unit

(c) 1 Vernier callipers / micrometer screw gauge

(d) 1 Parallax error

Question 6

(a) 1 Voltage

(b) 1 0.8V

7/29/2019 Marking Scheme for Chapter 1 Form 4

2/3

(c) 1 Subtract the reading with zero error

(d) 1 0.1V

Question 7

(a) 1 Tail

(b) 1 To measure the depth

(c) 1 Negative zero error Reject: Zero error

(d) 1 -0.07cm Reject: 0.07cm

Question 8

(a) 1 Temperature

(b) 1 2oC Correct unit

(c) 1 24oC Correct unit

(d) 1 Mercury

Question 9

(a) 1 H

(b)(i) 1 Voltmeter B

(b)(ii) 1 Has smaller division on its scale Reject: Can detectsmaller changes(didnot shown in diagramprovided)

Must havecomparative wordslikeer to comparethe two objects

(c) 1 Voltmeter measures potential difference(voltage) while ammeter measures current

Question 10

(a) 1 Mass

(b)(i) 1 Diagram 1.3

(b)(ii) 1 Has the smaller division on its scale

(c) 1 Repeat the readings and get the averagevalue // The position of the eye must beperpendicular to the scale of the reading

while taking measurement

7/29/2019 Marking Scheme for Chapter 1 Form 4

3/3

Question 11

(a) 1 Vernier callipers Reject: Micrometerscrew gauge

(b) 1 To get more accurate reading

(c) 1 Micrometer screw gauge Reject: Metre rule //vernier callipers

(d) 1 0.0063cm Correct unit

Question 12

(a) 1 Zero error / systematic error

(b)(i) 1 44.0s Must be one decimalplace and with thecorrect unit

Reject: 44s

(b)(ii) 1 44/20 (form 5 chapter 1)

1 2.2s (form 5 chapter 1)

(c) 1 increases

Question 13

(a) 1 Scalar quantity

(b) 1 0.1A

(c) 1 0.3A

(d) 1 Take the measurement when the eye isperpendicular to the scale of the reading to

avoid parallax error