Physical Sciences Grade 10 P1 September Test 2019 QP & Memo

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Physical Sciences P1 Downloaded from hlayiso.com Commen Test September 2019 NSC - Grade 10 INSTRUCTIONS AND INFORMATION 1. 10. 11. 12. Write your name and class (e.g. 10A) in the appropriate spaces on the ANSWER BOOK. This question paper consists of 11 questions. Answer ALL questions in the ANSWER BOOK. Hand in the ANSWER SHEET with the ANSWER BOOK. Number the answers correctly according to the numbering system used in this question paper. Leave ONE line between two sub-questions, e.g. between QUESTION 2.1 and QUESTION 2.2. You may use a non-programmable calculator. You may use appropriate mathematical instruments. You are advised to use the attached DATA SHEETS. Show ALL formulae and substitutions in ALL calculations. Round off your final numerical answers to a minimum of TWO decimal places. Give brief motivations, discussions, etc. where required. Write neatly and legibly. Copyright reserved Please turn over

Downloaded from hlayiso.com Physical Sciences P1 3 Common Test September 2019 NSC - Grade 10 QUESTION 1: MULTIPLE-CHOICE QUESTIONS Various options are provided as possible answers to the following questions. Each question has only ONE correct answer. Choose the answer and write only the letter (A-D) next to the question numbers (1.1 to 1.10) in the ANSWER BOOK, eg. 1.11 E. 1.1. Which ONE of the following combinations is correct? Distance Displacement __| Velocity A_| scalar scalar scalar B_ | scalar vector vector C_| vector scalar vector D_| vector vector scalar (2) 1.2 Atrolley runs down a slope, pulling a ticker tape behind it through a ticker timer. A portion of the tape is shown below and represents the distances moved during equal time intervals. 7mm. 16mm 23mm 31mm A B Cc “D E The ticker tape represents an acceleration that is ... A zero B uniform D_ increasing D_ decreasing (2) 1.3. The motion of two objects, P and Q, are represented in the following position versus time graph. Ax P The graph indicates that ... A Qis moving faster than P. BP and Qare accelerating uniformly. C PandQ are on a collision course. DP and Q are moving in opposite directions. (2) Copyright reserved Please turn over

Downloaded from hlayiso.com Physical Sciences P1 ommon Test September 2019 NSC. Grade 10 1.4 Twocars, A and B, are lifted vertically upwards by a crane. if car A has 1,5 times the mass of car B and car A is lifted twice as high as car B, then how do their gravitational potential energies compare? A Epa = B Epa) = D Epa) = = */sE py SE (8) = MoE ne) Epa) 1.5 Anincrease in the amplitude of a sound vibration will ... increase the loudness but not the pitch. increase the pitch but not the loudness. decrease both the pitch and the loudness. increase both the pitch and the loudness. DOUY 1.6 | Which ONE of the following represents the change in wave properties when one moves from infra-red to ultraviolet in the electromagnetic spectrum? Frequency Speed in a vacuum Decreases Decreases Decreases Remains constant Increases Remains constant Increases Increases DO} 0 > 1.7 Which ONE of the following statements regarding the earth’s magnetic field is FALSE? tt varies from place to place. The magnetic south pole is the geographic north pole. It is due to moving charges inside the hot interior of the earth. The magnetic north and the geographic north are at the same location. VOOYr 1.8 A negatively charged plastic comb is brought close to, but does not touch a small piece of paper. If the comb and the paper are now attracted to each other, then the original charge on the paper was ... positive only negative only negative or neutral positive or neutral voOwoPYr Copyright reserved Please turn over

Physical Sciences P1 Downloaded from hlayis NSC - Grade 10 1.9 Refer to the circuit diagram below. o.com Common Test September 2019 When switch S is now CLOSED, which ONE regarding the total resistance and current strength reading on ammeter A is correct? Total resistance | Current Strength on Ammeter A A Increases Increases B Decreases Increases c Increases Decreases D Decreases Decreases (2) 1.10 The three resistors shown in the section of an electric circuit are identical. r— X Y Z How do the potential differences across the individual resistors compare? Vx = Vy = ¥Vz Vx = Vy = Vz Vx = 2Vz Vy = YVz weeks) Copyright reserved [20] Please turn over

Downloaded from hlayiso.com Physical Sciences P1 common Test September 2019 NSC - Grade 10 QUESTION 2 2.1 Define the term displacement in words. (2) 2.2 During a training session an athlete runs 140 m west along a straight road (A to B). He then runs 100 m east (B to C) and then finally 60 m east (C to D). The total time taken for this session took 2,5 minutes. 2.2.1 Draw a vector scale diagram to represent the three displacements (A to B; B to C and C to D). Label all the vectors clearly. (Use a scale of 1cm = 20m) (3) 2.2.2 On the vector scale diagram draw and indicate the resultant displacement for his motion. (1) 2.2.3 Calculate the total distance covered by the athlete. (1) 2.2.4 Determine his change in position at D, relative to A. (2) 2.2.5 Calculate the average velocity of the athlete. (4) 2.3. An aeroplane flies, in a straight fine, due east to its destination which is 2 200 km away. The pilot wishes to maintain an average speed of 550 km.h”! in order to arrive on time. N 1. 200km . w E $ 2.3.1 Calculate the time required (in hours) for him to reach his destination. (3) However, after flying the first 1100 km, he finds that the average speed so far has been only 500 km.h’. 2.3.2 Calculate the time taken to cover the first 1 100 km. (2) 2.3.3 Determine the speed at which the pilot should fly for the rest of the trip if he still wishes to arrive on time. (3) [21] Copyright reserved Please turn over

Downloaded from hlayiso.com Physical Sciences P1 7 Common Test September 2019 NSC - Grade 10 QUESTION 3 The velocity versus time graph below illustrates the motion of a train that is initially travelling in a SOUTHERLY direction. Its initial position at time t = Os is taken as Om. - on v [=] Velocity (m.s' Time(s) 3.1 Explain why the train has a zero acceleration during interval AB. (1) 3.2 Why is the acceleration during interval BC EQUAL in magnitude to the acceleration during interval CD? (1) 3.3 Why does the train still experience a NEGATIVE acceleration during interval CD even though its velocity is increasing? (1) 3.4 Use the graph only (NOT equations of motions) to calculate the acceleration of the train for the interval: 3.4.1 BC (3) 3.4.2 DE (2) 3.5 Use the graph only (NOT equations of motions) to calculate the: 3.5.1 displacement for the time interval AE. (6) 3.5.2 distance travelled for the time interval AE. (1) 3.6 Sketch an acceleration versus time graph for the train over the entire journey. Indicate all relevant acceleration and time values. (4) [19] Copyright reserved Please turn over

Downloaded from hlayiso.com Physical Sciences P1 Common Test September 2019 NSC. Grade 10 QUESTION 4 A motor car is 100 m behind truck. Both the vehicles are travelling in the same direction at 72 km-h”. The truck drives over a landmine, which explodes, causing it to stop at that point. 72 kmh" lg Motor car The driver of the motor car takes 0,4s before he applies the car's brakes. Once the brakes are applied the car slows down uniformly at 2,5 ms”. 4.1 Explain the term ‘slows down uniformly at 2,5 m-s”’. (2) 4.2 Show that 72 km-h'! = 20 ms". (2) 4.3. Determine the distance travelled by the motor car during the 0,4 s reaction time. (3) 4.4 Calculate the total time taken for the motor car to come to rest, from the instant that the driver saw the landmine exploding. (4) 4.5 — Will the motor car stop before reaching the wreck of the truck? Show all working in your answer. (5) [16] Copyright reserved Please turn over

é Downloaded from hlayiso.com Physical Sciences P1 Common Test September 2019 Ns Grade 10 QUESTION 5 Vusi, of mass 45 kg, wants to reach an apple 2,5 m above the ground in an apple tree. He connects a swing to a high branch in an adjacent tree. The bottom of the swing is 1,15 m above the ground. He asks his friend, David, to push him in an effort to reach the apple. Ignore the effects of any frictional forces. 2.5m ft 5.1. Define the term gravitational potential energy. (2) 5.2 Calculate the gravitational potential energy of Vusi on the swing before David pushes him. (3) 5.3 State the law of conservation of mechanical energy in words. (2) 5.4 Use energy principles to calculate the minimum speed with which David needs to push Vusi so that he can reach the apple in the tree. (4) 5.5 Why is it NOT possible to use equations of motion to calculate the speed mentioned in 5.4? (1) 5.6 Vusi now decides to adjust the seat of the swing so that it is brought closer to the ground. Will the speed with which David needs to push Vusi in order to reach the apple be GREATER THAN, LESS THAN or THE SAME AS that calculated in 5.4? Explain your answer without using any calculation. (5) [17] Copyright reserved Please turn over

Position mm) Downloaded from hlayiso.com Physical Sciences Pi common Test September 2019 nso. ° Grade 10 QUESTION 6 The diagram below shows two waves R and S that are travelling in the same medium at the same time. WAVE R 6.1 State the principle of superposition of waves. (2) 6.2 Determine the amplitude of the resultant wave when the two waves cross at t = 0,358 (1) 6.3 What type of interference is illustrated when the two waves cross at t= 0,358? (1) 6.4 Give ONE reason why points A and B, on wave pattern R, are out of phase. (1) 6.5 Refer to wave pattern S and calculate the: 6.5.1 frequency of the wave (3) 6.5.2 speed of the wave (3) [11] Copyright reserved Please turn over

Downloaded from hlayiso.com Physical Sciences P1 tt Common Test September 2019 NSC - Grade 10 QUESTION 7 A group of learners decide to perform an experiment to determine the relationship between the wavelength and frequency of different sound notes. Specific sound notes are produced using a musical instrument. The frequency of the sound notes are measured and recorded in the table below. Note played by learner | Wavelength (m) Frequency (Hz) A 4 84 B 5 68 c 7,69 44 7.1 Write down the investigative question for this experiment. (2) 7.2 Identify the controlled variable. (1) 7.3 Use the information from the table above to draw an accurate frequency Versus “/wavetength QFApN. USE THE ATTACHED GRAPH PAPER. (3) 7.4 Calculate the gradient of this graph. (3) 7.5 What physical quantity does the gradient represent? (1) [10] QUESTION 8 8.1 Define the term ‘photon’. (2) 8.2 Two different sources of electromagnetic radiations have the following information: Source 1: its photon contains 2,65 x 1079J of energy Source 2: has a wavelength of 1 x 10m 8.2.1 Calculate the energy of a photon from source 2. (4) 8.2.2 Which source (1 or 2) has the greater penetrating ability? Explain. (2) [8] Copyright reserved Please turn over

Downloaded from hlayiso.com Physical Sciences P1 Common Test September 2019 NSC. * Grade 10 QUESTION 9 9.1 What is meant by the term ‘ferromagnetic substance’? (2) 9.2 Refer to the three bar magnets shown below. Magnet 1 x Magnet 2 Magnet 3 A B e The foliowing information is given: e Pole B repels pole C e Pole D attracts pole E e Pole F is a north pole Draw the magnetic field pattern around region X, as a result of both magnets 1 and 2. (3) [5] QUESTION 10 Two identical spheres X and Y, suspended from a ceiling, are placed a small distance apart, as shown in the diagram below. LLLLLLL ©) 40 electrons neutral Sphere X has an excess of 40 electrons while sphere Y is neutral. 10.1 Calculate the charge on sphere X. (2) 10.2 Name the principle used to answer 10.1. (1) Copyright reserved Please turn over

Downloaded from hlayiso.com Physical Sciences P1 13 Common Test September 2019 NSC - Grade 10 The two spheres are now allowed to touch each other and are then separated. 10.3 Will electrons be transferred from X to Y or from Y to X? (1) 10.4 Calculate the final charge on sphere X after separation. (3) 10.5 Name the principle used to answer 10.4. (1) [8] QUESTION 11 Study the circuit diagram below. Ignore the resistance of the battery and the wires. Switch S is initially closed. The battery transfers 3 x 10* J of energy for every 2,5 x 10° C that flows through the circuit. ©) @ fn, or |itgS Nay fn a () [42] 11.1 Define the term ‘terminal potential difference’. (2) 11.2 Determine the reading on voltmeter Vj. (3) 11.3 Determine the reading on ammeter A; if 3,24C of charge flows through itin 2 seconds. (3) Copyright reserved Please turn over

Downloaded from hlayiso.com Physical Sciences P1 Common Test September 2019 Nsc- Grade 10 11.4 If the reading on ammeter Az is 0,65A then determine the reading on ammeter Ag. (1) 11.5 If the total resistance of the circuit is 7,4 then determine the resistance of resistor R. (5) Switch S is now OPENED. 11.6 What will be the reading on voltmeter V2? (1) [15] TOTAL MARKS: 150 Copyright reserved Please turn over

Downloaded from hlayiso.com Physical Sciences P 1 15 Common Test September 2019 NSC - Grade 1 O DATA FOR PHYSICAL SCIENCES PAPER 1 (PHYSICS) TABLE 1: PHYSICAL CONSTANTS/TABEL 1: FIS/ESE KONSTANTES NAME/NAAM SYMBOUS/MBOOL VALUE/WAARDE Acceleration due to gravity g 9,8 m-s·2 Swaartekraqversnel/inq Speed of light in a vacuum C 3,0 x 108 m-s·1 Spoed van fig in 'n vakuum Planck's constant h 6,63 X 10·34 J-s Planck se konstante Charge on electron e -1 6 X 10·19 C Ladina oo e/ektron Electron mass me 9,11 X 10·31 kg Elektronmassa Vt =Vi +al',t WAVES, SOUND AND LIGHT/GOLWE, KLANK EN LIG v=fA T= ! f C E=hf or/of E= h- ELECTROSTATICS/ELEKTROSTATIKA ELECTRIC CIRCUITSIELEKTRIESE STROOMBANE 1 1 1 O=11',t -=-+-+ ... RP R1 R2 R s= R 1 +R2 + ... V= W ENERGY = mgh = !mv2 E, 2 I E,, Copyright reserved Please turn over

Frequency (Hz) Downloaded from hlayiso.com Physical Sciences P1 QUESTION 7.3 NAME: 16 NSC - Grade 10 ANSWER SHEET Common Test September 2019 GRADE: Copyright reserved

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE GRADE 10 PHYSICAL SCIENCES (P1) COMMON TEST SEPTEMBER 2019 MARKING GUIDELINES TIME: 2 Hours MARKS: 150 These marking guidelines consists of 12 pages.

Downloaded from hlayiso.com Physical Sciences P1 2 Common Test September 2019 Grade 10 - NSC QUESTION 1 1.1 B  (2) 1.2 B (2) 1.3 A (2) 1.4 B  (2) 1.5 A (2) 1.6 C  (2) 1.7 D  (2) 1.8 D  (2) 1.9 B  (2) 1.10 A  (2) (20) QUESTION 2 2.1 Difference in position in space  OR Change in position in space  (2) 2.2  2.2.1 B  C A D 7cm 5cm 3cm (3) 2.2.2 A D  1cm (1) 2.2.3 300 m  (1) 2.2.4 20 m east  (2) Copyright Reserved Please Turn Over

Downloaded from hlayiso.com Physical Sciences P1 3 Common Test September 2019 Grade 10 - NSC 2.2.5  POSITIVE MARKING FROM 2.2.2 Δx v  Δt 20   150  (4)  0,13 m  s 1 east 2.3 2.3.1 D v  Δt 2 200  550   Δt   (3) Δt  4h 2.3.2 D v Δt  1100 500  Δt  Δt  2,2h (2)  2.3.3 for the rest of the trip : D = (2 200 - 1 100) = 1 100 km Δt = 4 - 2,20  = 1,8 h D v Δt 1 100  1,80  (3)  611,11 km  h 1  [21] Copyright Reserved Please Turn Over

Downloaded from hlayiso.com Physical Sciences P1 4 Common Test September 2019 Grade 10 - NSC QUESTION 3 3.1 Its velocity is constant  (1) 3.2 The gradient / slope (for BCD) is the same.  (1) OR The gradient is constant  3.3 The train is now moving opposite to its original direction  (1) OR It is moving northwards  3.4.1 Δy a  gradient  OR a  Δx 0  45     20  5    3m  s 2 (3) a  3 m  s 2 northwards  3.4.2 0   30 a  45  30 30  15  2 m  s 2 northwards  (2) 3.5 3.5.1  Δx  area under the graph   OR  EITHER ONE   1  1   1 b    b  h    b  h  2  2     1   1   5  45   15  45     25   30 2  2   225  337,50   375   187,50m southwards (6) Copyright Reserved Please Turn Over

Downloaded from hlayiso.com Physical Sciences P1 5 Common Test September 2019 Grade 10 - NSC 3.5.2 D= 225 + 337.50 + 375 (1) = 937,50m 3.6 POSITIVE MARKING FROM 3.4.1 AND 3.4.2 a 2 m  s-2  5 30 45 Δt s 0  -3 Correct labels and units on both axes  Horizontal line where a  0 m.s 2 and Δt  5s  Horizontal line where a   3 m.s 2 and Δt  5  30s  (4) Horizontal line where a  2 m.s - 2 and Δt  30  45s [19] QUESTION 4 4.1 The velocity decreases  by 2.5 m.s-1 every second   (2) 4.2 72 000 m   = 20m.s-1 (2) 3 600 s   4.3 OPTION 1 Distance = spree x time  = 20.0,4  = 8m  OPTION 2 1 x  vi t  . a . t 2  2  20. 0,4  0   8m  OPTION 3  v f  vi  x    t   2    20  20  . 0,4  2  8m  (4) Copyright Reserved Please Turn Over

Downloaded from hlayiso.com Physical Sciences P1 6 Common Test September 2019 Grade 10 - NSC 4.4 v  v  at  f i   0  20   2,5 Δt Δt  8s Δt  0,5  8  total  8,50 s (4) 4.5 OPTION 1 2 2 v v  2ax  f i 2 0  202  2  2,5 Δx  Δx  80 m  motor car will stop   Since it comes to a halt within (80 + 8)m (which is less than 100m) [POSITIVE MARKING FROM 4.3] OPTION 2 1  Δy  v Δt  a Δt2 i 2 1  208   2,5082  2  80m  motor car will stop  Since it covers (80 + 8)m (which is less than 100m) (5) [16] Copyright Reserved Please Turn Over

Downloaded from hlayiso.com Physical Sciences P1 7 Common Test September 2019 Grade 10 - NSC QUESTION 5 5.1 The energy of an object due to its position in the gravitational field  relative to some reference point  (2) 5.2 Ep = mgh  OR U=mgh = 45 x 9,8 x 1,15  = 507,15 J  (3) 5.3 In an isolated system  the total mechanical energy remains constant  (2) 5.4 Mechanical Energy on Ground = Mechanical Energy at Apple "  EITHER ONE  (Ep + Ek) ground = (Ep + Ek) at Apple    507,15  45 v 2  45  9,8  2,50   0  1 2  (4) v  5,14 m  s 1 5.5 Initial movement is not linear  OR Motion is “pendulum-like”  OR He is about to swing in an arc  (1) 5.6 Greater than  Ep would decrease  While Ek increases  Since Mechanical Energy has to remain constant  Therefore when Ek increase then (v) must also increase  (5) [17] Copyright Reserved Please Turn Over

Downloaded from hlayiso.com Physical Sciences P1 8 Common Test September 2019 Grade 10 - NSC QUESTION 6 6.1 When two waves occupy the same space at the same time, the resulting amplitude is the algebraic sum of the amplitudes of two waves  (2) 6.2 20mm  (1) 6.3 Constructive  (1) 6.4 They are moving in opposite directions  (1) 6.5.1 1  f T 1   1,4  0,71 Hz (3) 6.5.2  POSITIVE MARKING FROM 6.5.1 0,12   0,06 2 v f λ   0,71  0,06  0,04 m  s 1  (3) [11]  QUESTION 7 7.1 Does the frequency of the note decrease as the wavelength increases? OR Any question which mentions the two variables (frequency and wavelength)  (2) 7.2 Temperature  (of the surrounding air) (1) Copyright Reserved Please Turn Over

Downloaded from hlayiso.com Physical Sciences P1 9 Common Test September 2019 Grade 10 - NSC 7.3  Plotting all 3 points correctly  Straight line graph passing through the origin (3) 100 Frequency (Hz) 80 60 40 20 0 0,05 0,10 0,15 0,20 0,25 0,30 1 wavelength m1   Copyright Reserved Please Turn Over

Downloaded from hlayiso.com Physical Sciences P1 10 Common Test September 2019 Grade 10 - NSC 7.4 84  44  gradient  0,25  0,13   333,33  OR Any other suitable co-ordinates (3) 7.5 Speed  (of sound) (1) [10] QUESTION 8 8.1 A packet of energy  of light (2) 8.2.1 hc  E λ 6,631034 3 108    1 10-13   1,99 1012 J  (4) 8.2.2 Source 2  It has a greater amount of energy compared to that of source 1  (2) [8] Copyright Reserved Please Turn Over

Downloaded from hlayiso.com Physical Sciences P1 11 Common Test September 2019 Grade 10 - NSC QUESTION 9 9.1 A substance that is strongly attracted by magnets  OR A substance that is easily magnetized  (2) 9.2  Pattern  direction (3) [5] QUESTION 10 10.1 Q n   Qe Q 40   1,6  10 19 (2) Q   6,40  10 18 C 10.2 Charge quantization  (1) 10.3 X to Y  (1) 10.4   POSITIVE MARKING FROM10.1 Q Q Q 1 2  2   6,40 1018  0   2 (3)   3,20 1018 C  10.5 Conservation of charge  (1) [8] Copyright Reserved Please Turn Over

Downloaded from hlayiso.com Physical Sciences P1 12 Common Test September 2019 Grade 10 - NSC QUESTION 11 11.1 The voltage measured across the terminals of the battery  when charges are flowing in the circuit  (2) 11.2 W V  Q 3 10 4     2,5 103  (3) 12 V  11.3 Q I  Δt 3,24   2  1,62A  (3) 11.4 0,97A  (1) 11.5 1 1 1   R R R  P 1 2 1 1   6 4   R  2.40Ω 9 R R  R T P R 7,40  2,40  R R  R  5Ω R (5) 11.6 Zero   (1) [15] TOTAL MARKS: 150  Copyright Reserved Please Turn Over