Physical Sciences Grade 10 Paper 1 KwaZulu Natal June 2019 Memo

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Downloaded from hlayiso.com Physical Sciences P14 NSC Common Test June 2019 2 INSTRUCTIONS AND INFORMATION = Write your name in the appropriate spaces on the ANSWER BOOK. 2. Answer ALL the questions in the ANSWER BOOK. 3. Number the answers correctly according to the numbering system used in this question paper. 4, Leave ONE line between two subquestions, for example between QUESTION 2.1 and QUESTION 2.2. 5. You may use a non-programmable calculator. 6. You are advised to use the attached DATA SHEET. 7. Show ALL formulae and substitutions in ALL calculations. 8. Round off your final answers to a minimum of TWO decimal places. 9. Give brief motivations, discussions, et cetera where required. Copyright reserved Please turn over

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Downloaded from hlayiso.com Physical Sciences P1 NSC 4 Common Test June 2019 1.6 The resistance of a resistor can also be expressed as ... A joule per coulomb. B volt per ampere. Cc joule per second. D volt per coulomb . (2) 1.7. The voltmeter V reads 4V. nnn Al 102 50 Ld | The emf of the battery is therefore ... A 12V B 8V Cc 6V D4V (2) 2x7 [14] QUESTION 2 2.1 A transverse wave is travelling along a string. A point on the medium carrying the wave is observed. A graph of displacement versus time of the point is shown. The distance between two consecutive troughs is 21cm. € nn ee ay 5 , g 0 O18 time (5) a Fa 2.1.1. Define the term frequency of a wave. (2) 2.1.2 Calculate the frequency of this wave. (3) Copyright reserved Please turn over

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Downloaded from hlayiso.com Physical Sciences P1 NSC Common Test June 2019 6 QUESTION 4 4.1 Define the term magnetic field. 4.2 The diagram below shows two permanent magnets A and B, as well as a compass placed next to B. 4.2.1. Why would iron be a more suitable material for making the compass needle? 4.2.2 Re-draw magnet B and clearly indicate its magnetic poles. 4.2.3 Is there a force of ATTRACTION or REPULSION between magnets A and B? Explain your answer. 4.2.4 Draw the magnetic field pattern around region X, as a result of both magnets A and B. 4.3 Define the term magnetosphere. 4.4 Briefly describe how a magnetic storm is caused in the earth's outer magnetosphere. ‘QUESTION 5 5.1. Aglass ball stands on an insulating stand and is made positively charged by rubbing it with a wooilen cloth. () 5.1.1 Explain the term tribo-electric charging. (2) (1) (2) (2) (2) (2) [12] Copyright reserved Please turn over

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Downloaded from hlayiso.com Physical Sciences P1 NSC Common Test June 2019 8 5.2.3 X is now brought into contact with Y for a moment and the spheres are then placed back at their original positions. x Y After contact The charge on both X and Y is now -0,5 pC. Calculate the original charge of sphere Y. Show all working. (4) 5.2.4 Did Y LOSE or GAIN electrons? (1) [16] QUESTION 6 A learner sets up the following electrical circuits to test a hypothesis. — | — @) () A) BQ) ? S QZ Circuit 1 Circuit 2 Circuit 3 6.1. State the hypothesis that the tearner wants to test. (2) 6.2 Identify the dependent variable. (1) 6.3. What energy conversion takes place in all 3 electrical circuits? (2) Copyright reserved Please turn over

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Downloaded from hlayiso.com Physical Sciences P1 NSC 10 Common Test June 2019 DATA FOR PHYSICAL SCIENCES GRADE 10 PAPER 1 (PHYSICS) GEGEWENS VIR FISIESE WETENSKAPPE GRAAD 10 VRAESTEL 1 (FISIKA) TABLE 1: PHYSICAL CONSTANTS/TABEL 1: FISIESE KONSTANTES NAME/NAAM SYMBOL/S/MBOOL VALUE/WAARDE Speed of light in a vacuum Ce] Spoed van lig in 'n vacuum ¢ 3,0 10° ms Planck's constant -34 Planck se konstante n 6,63 x 10" Js Electron mass 34 Elekironmassa Me 9,11 x 10" kg Electron charge de -1,6x10%C TABLE 2: FORMULAE/TABEL 2: FORMULES WAVES, SOUND AND LIGHT/GOLWE, KLANK EN LIG 4 v=fA¥ or c=faA Te _ f E =hf , ELECTROSTATICS Q Q,+Q = Q= 1 2 “a 2 ELECTRIC CIRCUIT Q=I At A 1 + 1 Rp R, R, Rs = Ry +Roet... Ve Ww Q Copyright reserved

Downloaded from hlayiso.com Downloaded from Stanmorephysics.com PHYSICAL SCIENCES P1 (PHYSICS) COMMON TEST MARKING GUIDELINE JUNE 2019 NATIONAL SENIOR CERTIFICATE GRADE 10 MARKS: 100 This marking guideline consists of 7 pages. Copyright Reserved Please Turn Over

Downloaded from hlayiso.com Physical Sciences P1 2 June 2019 Common Test Grade 10 – Marking Guideline QUESTION 1 1.1 D  (2) 1.2 C  (2) 1.3 C  (2) 1.4 A (2) 1.5 D (2) 1.6 B (2) 1.7 C (2) [14] QUESTION 2 2.1.1 No of complete waves passing a fixed point in one sec. (2) 2.1.2 1 f   T 1  0,06   16,67Hz  OR 3 waves in 0,18 s  x waves in 1 s  f = 16,67 s-1  (3) 2.1.3 Positive marking from 2.1.2 V =f x   = 16,67 x 0,21  = 3,50 m.s-1  (3) 2.1.4 Halved  (1) 2.1.5 Negative Marking from 2.1.4  Using v = f x    If frequency is doubled then wavelength must be halved   In order to keep speed constant  (3) Copyright Reserved Please Turn Over

Downloaded from hlayiso.com Physical Sciences P1 3 June 2019 Common Test Grade 10 – Marking Guideline Downloaded from Stanmorephysics.com 2.2.1 Sound with a frequency range of between 20 kHz to 100 kHz  (2) 2.2.2 Part of the sound energy is absorbed by the sea bed.  (2) 2.2.3 Δx v   Δt Δx 1510  1,5  Δx  2 265 m  2,27 km  (3) OR Δx v   Δt Δx 1510   3 x  4530 4530 Depth  2  2 265 m  2,27 km  2.2.4 Bat  OR Dolphin  (1) [20] QUESTION 3 3.1 (ANY ONE)  Originate from accelerating electric charges   Propagate as electric and magnetic fields that are perpendicular to each other   Can travel through a vacuum   Have a speed of 3 x 108 m.s-1-  (1) 3.2  some of its behaviour is explained using a wave model  while other aspects of its behaviour are explained using the particle model. (2) Copyright Reserved Please Turn Over

Downloaded from hlayiso.com Physical Sciences P1 4 June 2019 Common Test Grade 10 – Marking Guideline 3.3.1 E = hf  = (6,63 x 10-34)x(97,60x106)  = 6,47x10-26J  (3) 3.3.2 OPTION 1 c =fx    3x 108 = f x (1,50 x 103)  f = 200 000Hz f = 0,20 MHz  ≠ 2 MHz (4) OPTION 2 Speed = f x   = 2 x 106  x 1,5 x 103  = 3 x 109m.s-1 ≠ 3 x 108 m.s-1  3.3.3 Increases  (1) 3.3.4 Negative marking from 3.3.3 1  E  since (c) remains constant    When  decreases then (E) must increase. (2) [13] QUESTION 4 4.1 A region in space where a magnet/ferromagnetic material will experience a force  (2) 4.2.1 It is ferromagnetic  (1) 4.2.2 N S  (1) 4.2.3  Repulsion   The north pole of A faces the north pole of B  (2) Copyright Reserved Please Turn Over

Downloaded from hlayiso.com Physical Sciences P1 5 June 2019 Common Test Grade 10 – Marking Guideline Downloaded from Stanmorephysics.com 4.2.4 Positive marking from 4.2.1 N N  Shape   Direction  (2) 4.3 Region surrounding the earth in which charged particles are trapped.  (2) 4.4 Streams of charged particles are given off by solar flares.  (2) [12] QUESTION 5 5.1.1 Certain materials become electrically charged after they come into contact with different materials.  (2) 5.1.2 ● electrons move  ● from the glass ball onto the cloth  (2) 5.1.3 Positively charged  (1) 5.1.4 To the left  (1) 5.2.1 Q n  Qe  3 x 10 6    1,6 x 10 19  1,88 x 10 13  (3) 5.2.2 The net charge on an isolated system remains constant  (2) 5.2.3 OR Q1  Q 2  Q Total charge = -1 C  2   3  Qy -3 C +Qy = -1 C   0,5   Qy = 2 C  2 Qy   2C  (4) Copyright Reserved Please Turn Over

Downloaded from hlayiso.com Physical Sciences P1 6 June 2019 Common Test Grade 10 – Marking Guideline 5.2.4 Gain  (1) [16] QUESTION 6 6.1 As the number of resistors in series increases so will the current strength decrease  (2) 6.2 Current strength  (1) 6.3 Electrical energy converted to light/heat energy  (2) [5] QUESTION 7 7.1 emf  Since no current is flowing through the battery (2) 7.2 8 (1) 7.3.1 4V  (1) 7.3.2 4V  (1) 7.4 0,67 A  (1) 7.5 2C  (1) 7.6 1 1 1    Rp R1 R 2 1 1 1   Rp 3 6  Rp  2 Ω  R T  12Ω  (4) Copyright Reserved Please Turn Over

Downloaded from hlayiso.com Physical Sciences P1 7 June 2019 Common Test Grade 10 – Marking Guideline Downloaded from Stanmorephysics.com 7.7 W V  Q 4800 20  C  Q  240 C Q  It  240  2 x Δt  Δt  120 s  2 minutes  (5) 7.8 Apply Negative Marking  Decreases   total resistance will increase   causing total current to decrease   which causes V3 to decrease since V3  I (4) [20] TOTAL MARKS: 100 Copyright Reserved Please Turn Over