Test 4 for level 1,2 & 3 Marking Guidelines NSC Vhembe West District/2023
VHEMBE WEST DISTRICT
NATIONAL
SENIOR CERTIFICATE
GRADE 12
PHYSICAL SCIENCES
TEST 4 FOR LEVEL 1,2 & 3
MARKING GUIDELINES
23/08/2023
MARKS: 100
This marking guidelines consists of 5 pages.
1|Page PTO Copyright Reserved
, Test 4 for level 1,2 & 3 Marking Guidelines NSC Vhembe West District/2023
QUESTION 1
1.1 D (2)
1.2 D (2)
1.3 D (2)
1.4 A (2)
1.5 A (2)
1.6 B (2)
1.7 B (2)
1.8 B (2)
1.9 A (2)
1.10 D (2)
[20]
QUESTION 2
2.1.1 Frequency – number of cycles/vibrations per unit time (2)
2.1.2 The time taken for one complete cycle of vibrations or oscillation. (2)
2.1.3 The apparent change in frequency (or pitch) of the sound detected by a
listener because the sound source and the listemer have different
velocities relative to the medium of sound propagation. (2)
2.1.4 Frequency is inversely proportional to wavelngth (2)
2.1.5
340+0
FL = ( ) 1000
340−20
FL = 1 062,5 Hz (4)
2.1.6
340+0
FL = ( ) 1000
340+20
FL = 944,44 Hz (4)
2.1.7 As the fire engine approaches you, the pitch of the siren is higher
and as the fire engine moves away, the pitch of the siren
decreases/becomes lower. (2)
2|Page PTO Copyright Reserved
VHEMBE WEST DISTRICT
NATIONAL
SENIOR CERTIFICATE
GRADE 12
PHYSICAL SCIENCES
TEST 4 FOR LEVEL 1,2 & 3
MARKING GUIDELINES
23/08/2023
MARKS: 100
This marking guidelines consists of 5 pages.
1|Page PTO Copyright Reserved
, Test 4 for level 1,2 & 3 Marking Guidelines NSC Vhembe West District/2023
QUESTION 1
1.1 D (2)
1.2 D (2)
1.3 D (2)
1.4 A (2)
1.5 A (2)
1.6 B (2)
1.7 B (2)
1.8 B (2)
1.9 A (2)
1.10 D (2)
[20]
QUESTION 2
2.1.1 Frequency – number of cycles/vibrations per unit time (2)
2.1.2 The time taken for one complete cycle of vibrations or oscillation. (2)
2.1.3 The apparent change in frequency (or pitch) of the sound detected by a
listener because the sound source and the listemer have different
velocities relative to the medium of sound propagation. (2)
2.1.4 Frequency is inversely proportional to wavelngth (2)
2.1.5
340+0
FL = ( ) 1000
340−20
FL = 1 062,5 Hz (4)
2.1.6
340+0
FL = ( ) 1000
340+20
FL = 944,44 Hz (4)
2.1.7 As the fire engine approaches you, the pitch of the siren is higher
and as the fire engine moves away, the pitch of the siren
decreases/becomes lower. (2)
2|Page PTO Copyright Reserved