Physical Sciences Grade 10 P1 North West June 2024 Memo

PROVINCIAL ASSESSMENT GRADE 10 PHYSICAL SCIENCES: PHYSICS (P1) JUNE 2024 MARKING GUIDELINES MARKS: 75 These marking guidelines consist of 5 pages and a cognitive table. Copyright reserved Please turn over

Physical Sciences/P1 2 NW/June 2024 Grade 10 – Marking Guidelines QUESTION 1 1.1 B  (2) 1.2 A  (2) 1.3 D  (2) 1.4 D  (2) 1.5 C  (2) 1.6 A  (2) 1.7 B  (2) [14] QUESTION 2 2.1 The number of waves/wave pulses  passing a point per second. (2) 2.2. 2.2.1 A&B or A&D or B&C or B&D or C&D  (any one) (1) 2.2.2 Crest  (1) 2.3 2.3.1 Wavelength = ½ (6)  =3m (2) 2.3.2 Amplitude = 0,5(18)  = 9 cm  = 0,09 m  (3) 2.4 2.4.1 Destructive interference  (1) 2.4.2 Positive marking from question 2.3.2 Marking criteria: Trough  Correct amplitude  (2) [12] Copyright reserved Please turn over

Physical Sciences/P1 3 NW/June 2024 Grade 10 – Marking Guidelines QUESTION 3 3.1 3.1.1 Temperature  (1) 3.1.2 Speed of sound or Time taken for the sound to travel. (1) 3.2 ∆𝑥/𝑑 𝑉=  ∆𝑡 80 =  0,236 = 338,98 𝑚. 𝑠 −1  (3) 3.3 The speed of sound increases/time taken for the sound to travel decreases/as the temperature increases.  (2) 3.4 3.4.1 Wave A  (1) 3.4.2 Wave A  (1) [9] QUESTION 4 4.1 Wave-particle duality  No need for a medium to propagate.  Speed of EM waves are constant at 3 × 10-8 m.s-1 in a vacuum. Oscillation between alternating accelerating charges cause magnetic waves. (any two) (2) 4.2 4.2.1 Radio waves OR microwaves  (1) 4.2.2 Infrared radiation/waves  (1) 4.3 Gamma rays  (1) 4.4 Gamma rays have the shortest wavelengths or the highest frequencies in the electromagnetic spectrum.  (1) 4.5 4.5.1 Packet of energy found in light.  (2) 4.5.2 Option 1 Option 2 𝒄 = 𝒇𝝀 c E=h  380 x 108 = f (700 x 10-9)   f = 5,428 x 1016 Hz 8 380 x 10 = 6,63 x 10−34  700  x 10−9 E = hf  = 3,598 x 10 J  -17 = 6,63 x 10-34 (5,428 x 1016) ≈ 3,60 x 10-17 J = 3,598 x 10-17 J  ≈ 3,60 x 10-17 J (4) [12] Copyright reserved Please turn over

Physical Sciences/P1 4 NW/June 2024 Grade 10 – Marking Guidelines QUESTION 5 5.1 The principle of conservation of charge states that the net charge of an isolated system remains constant during any physical process.  (2) 5.2 EXCESS  (1) 5.3 FROM B TO A  (1) 5.4 𝑄 = 𝑄1 +𝑄2  2 5×10−9 + (−2 × 10−9 ) =  2 = + 1,5 x 10-9 C  (3) 5.5 Option 1 Option 2 Q = nqe  𝑄 n=𝑒 1,5 x 10-9 = n x 1,6 x 10-19  1,5 × 10−9 n = 9,375 x 109 electrons  = 1,6 × 10−19  = 9,375 x 109 electrons  (3) 5.6 When the charged plastic ruler is brought closer to the uncharged pieces of paper, the paper is polarised.  The negative charges on the paper are repelled by the negative charges on the ruler. This leaves the side of the paper closest to the ruler positive.  (2) [12] Copyright reserved Please turn over

Physical Sciences/P1 5 NW/June 2024 Grade 10 – Marking Guidelines QUESTION 6 6.1 Current strength: rate of flow of charge  (2) 6.2 6.2.1 V1 = 1,5 x 4 = 6 V  (2) 6.2.2 Positive marking from question 6.2.1 Option 1 Option 2 VTotal = V2 + V3  𝑉 I= 𝑅 6 = V2 + 4,8  4,8 V2 = 1,2 V  = 8 = 0,6 A 1 1 1 = + 𝑅𝑝 𝑅1 𝑅2 1 1 =6+3 Rp = 2 Ω V2 = I x R  = 0,6 x 2  = 1,2 V  (2) 6.3 Positive marking from questions 6.2.1 and 6.2.2 Option 1 Option 2 𝑉 𝑉 I=𝑅 I=𝑅 4,8 6 = 8  = 10  = 0,6 A  = 0,6 A  (3) 6.4 6.4.1 Positive marking from questions 6.2.1, 6.2.2 and 6.3 Option 1 Option 2 1 1 1 𝑉 𝑅𝑝 =𝑅 +𝑅 R= 𝐼  1 2 1 1 6 =6+3 Any equation = 0,6  Rp = 2 Ω  = 10 Ω  RT = Rs + Rp =8+2 = 10 Ω  (3) 6.4.2 Q = I x t  Q = (0,6)(20)  Q = 12 C  (3) 6.5 DECREASES  (1) [16] TOTAL: 75 Copyright reserved Please turn over

Physical Sciences/P1 6 NW/June 2024 Grade 10 – Marking Guidelines SUBJECT: Physical Sciences P1 ASSESSMENT TASK: GRADE 10 - June exams QUESTION ANALYSIS GRID 2024 Cognitive Levels Topic Difficulty Levels Waves, Sound and Electrostatics Electric circuits TOTAL Moderate Difficult QUESTION Mark 1 2 3 4 Easy Light 1.1 2 2 2 2 2 1.2 2 2 2 2 2 1.3 2 2 2 2 2 1.4 2 2 2 2 2 1.5 2 2 2 2 2 1.6 2 2 2 2 2 1.7 2 2 2 2 2 Ques 1 14 2 8 4 0 10 2 2 14 2 8 4 2.1 2 2 2 2 2 2.2.1 1 1 1 1 1 2.2.2 1 1 1 1 1 2.3.1 2 2 2 2 2 2.3.2 3 3 3 3 3 2.4.1 1 1 1 1 1 2.4.2 2 2 2 2 2 Ques 2 12 3 4 5 0 12 0 0 12 4 4 4 3.1.1 1 1 1 1 1 3.1.2 1 1 1 1 1 3.2 3 3 3 3 3 3.3 2 2 2 2 2 3.4.1 1 1 1 1 1 3.4.2 1 1 1 1 1 Ques 3 9 0 4 5 0 9 0 0 9 0 7 2 4.1 2 2 2 2 2 4.2.1 1 1 1 1 1 4.2.2 1 1 1 1 1 4.3 1 1 1 1 1 4.4 1 1 1 1 1 4.5.1 2 2 2 2 2 4.5.2 4 4 4 4 4 Ques 4 12 4 4 4 0 12 0 0 12 4 3 5 5.1 2 2 2 2 2 5.2 1 1 1 1 1 5.3 1 1 1 1 1 5.4 3 3 3 3 3 5.5 3 3 3 3 3 5.6 2 2 2 2 2 Ques 5 12 2 1 6 3 0 12 0 12 7 5 0 6.1 2 2 2 2 2 6.2.1 2 2 2 2 2 6.2.2 2 2 2 2 2 6.3 3 3 3 3 3 6.4.1 3 3 3 3 3 6.4.2 3 3 3 3 3 6.5 1 1 1 1 1 Ques 6 16 2 0 8 6 0 0 16 16 5 4 7 SUMMARY QUES 1 14 2 8 4 0 10 2 2 14 2 8 4 QUES 2 12 3 4 5 0 12 0 0 12 4 4 4 QUES 3 9 0 4 5 0 9 0 0 9 0 7 2 QUES 4 12 4 4 4 0 12 0 0 12 4 3 5 QUES 5 12 2 1 6 3 0 12 0 12 7 5 0 QUES 6 16 2 0 8 6 0 0 16 16 5 4 7 Total marks 75 13 21 32 9 43 14 18 75 22 31 22 Norm marks 75 11 23 34 7 41 15 19 75 23 29 23 Total % 100 17 28 43 12 57 19 24 100 29 41 31 Norm % 100 15 30 45 10 54 20 26 100 30 40 30 Copyright reserved