Physical Sciences Grade 10 Limpopo March Test 2023 QP & Memo

Downloaded from hlayiso.com d from Stanmorephysics.com PROVINCIAL GOVERNMENT = a REPUSLUC OF SOUTH AFRICA CEPARITMENT OF EDUCATION MOGALAKWENA DISTRICT PHYSICAL SCIENCES NATIONAL SENIOR CERTIFICATE TERM‘ CONTROL TEST 07 MARCH'2023 GRADE 10 MARKS : 100 DURATION: 2 hours STARTING TIME: 08HO0O This question paper consists of 12 pages including this one Page 1 of 12 Mogalakwena District

Downloaded from hlayiso.com Dowaleasted From Stanmore~hysics.com Term 1 Control Test INSTRUCTIONS 1. This question paper consists of 12 pages including the cover page 2. Answer all the questions in the answer book 3. You are advised to use the attached DATA SHEETS. 4. Round off your final answer to a minimum of TWO decimal places 5. Show all your calculations including formulae where applicable. 6. Candidates may use non-programmable calculators. 7. Write neatly and legibly. Page 2 of 12 Mogalakwena District

Downloaded from hlayiso.com Dowaleasted From Stanmore~hysics.com Term 1 Control Test QUESTION 1 Four 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 number (1.1—1.10) in the ANSWER SHEET, for example 1.11 E. 1.1 Two pulses are travelling towards each other along a string, as shown in the diagram below. —> When the centres of the two pulses meet at Q, the amplitude of the resultant pulse will be ... A xty B 2(x+y) Cc y-xX D 2y-x) (2) 1.2 When two wave crests overlap, the increase in amplitude is due to ... A Cancellation. B Two waves in phase. Cc Destructive interference. D Constructive interference. (2) 1.3 The frequency of a wave is defined as the ... A Lowest point on a wave. B Time taken for one complete wave. Cc Number of complete waves per second. D Number of points in phase in a wavelength. (2) Page 3 of 12 Mogalakwena District

Downloaded from hlayiso.com Dowaleasted From Stanmore~hysics.com Term 1 Control Test 1.4 In which ONE of the following do sound waves travel the FASTEST? A Air B Liquids Cc Solids D Vacuum (2) 1.5 Which ONE of the combinations below concerning the pitch and loudness of sound is CORRECT? The pitch and loudness of sound depend on: PITCH LOUDNESS A Frequency Amplitude of vibration B Frequency Speed of vibration Cc Amplitude of vibration Frequency D Speed of vibration Frequency 1.6 Consider the following statements concerning ultraviolet radiation: (i) It cannot be reflected. (ii) It has a longer wavelength than gamma rays. (iii) It is radiated from the sun and may be harmful to humans. A (i) and (ii) only B B (ii) and (iii) only C Cc (i) and (iii) D (i, (ii) and (iii) (2) 1.7 A rod acquires a negative charge after it has been rubbed with wool. Which ONE of the following best explains why this happens? A Positive charges are transferred from the rod to the wool. B Negative charges are transferred from the rod to the wool. Cc Positive charges are transferred from the wool to the rod. D Negative charges are transferred from the wool to the rod. (2) Page 4 of 12 Mogalakwena District

Downloaded from hlayiso.com Dowaleasted From Stanmore~hysics.com Term 1 Control Test 1.8 A rubber balloon obtains a negative charge after it has been rubbed against human hair. Which ONE of the statements below best explains why this happens? A Negative charges are transferred from the rubber balloon to the human hair. B Positive charges are transferred from the rubber balloon to the human hair. Cc Positive charges are transferred from the human hair to the rubber balloon. D Negative charges are transferred from the human hair to the (2) rubber balloon. 1.9 Two identical light bulbs are connected in parallel, as shown in the circuit diagram below. Voltmeters Vi and V2 are connected across each light bulb =o= & On ® A V1 = V2 B Vi = 2V2 Cc Vi= Y’V2 D Vi= YV2 (2) 1.10 For which ONE of the quantities below is the CORRECT unit of measurement given? QUANTITY UNIT A | Current As” B Energy kw C_ | Potential difference Vv D_ | Resistance Vs (2) [20] Page 5 of 12 Mogalakwena District

Downloaded from hlayiso.com Dowaleasted From Stanmore~hysics.com Term 1 Control Test QUESTION 2 Two girls, standing at opposite ends of a rope, each makes a pulse of the same speed. Pulse A, with an amplitude of 4 cm, moves to the right and pulse B, with an amplitude of -6 cm, moves to the left. The pulses meet at point C. 2.1 State the phenomenon observed when the two pulses meet at point (3) Cc. 2.2 Draw a labelled diagram to show the resultant pulse when the two (2) pulses meet at point C. Label the pulses clearly. 2.3 Name the type of interference that takes place when the pulses (2) meet. 2.4 Determine the resultant amplitude of the pulses at point C. (2) 2.5 How will the amplitude of pulse A be affected after passing point C? (1) Write down only INCREASES, DECREASES or REMAINS THE SAME. [10] Page 6 of 12 Mogalakwena District

Downloaded from hlayiso.com Dowaleasted From Stanmore~hysics.com Term 1 Control Test QUESTION 3 The diagram below represents a water wave moving from left to right. The time between two consecutive crests is 0, 5 s. Direction of motion 3.1 What type of wave is a water wave? (1) 3.2 Write down the amplitude of the wave. (2) 3.3 Define the term wavelength. (2) 3.4 Determine the wavelength of the wave. (3) 3.5 Name TWO points on the wave form above that are in phase. (2) Calculate: 3.6 The time taken for FOUR crests to move past a certain point in the (3) path of the wave 3.7 The speed of the wave (4) [17] Page 7 of 12 Mogalakwena District

Downloaded from hlayiso.com Dowaleasted From Stanmore~hysics.com Term 1 Control Test QUESTION 4 A sound wave is produced by a source placed a certain distance from a building as shown below. The echo reaches the source after 8 seconds. The speed of sound in air is 340 mes Sound Sound wave source -—! Building OOO OOO 4.1 Define the term longitudinal wave. (2) 4.2 Calculate the distance between the sound source and the building. (4) 4.3 Name the property of a sound wave that influences its pitch. (2) 4.4 Above which frequency is a sound wave classified as ultrasound? (2) 45 Name ONE use of ultrasound in the medical treatment of patients. (2) [12] QUESTION 5 The frequency and corresponding energy of electromagnetic waves are given in the table below. WAVE FREQUENCY ENERGY (Hz) (3) A 2x 10° 1,33 x 10 B 4 x 10 2,65 x 1077 c 3,5 x 10” 2,32 x 107 D 1,8 x 10% 1,19 x 10° E f 4,97 x 10“ 5.1 Describe how an electromagnetic wave propagates. (3) 5.2 What is the relationship between frequency and energy of an (2) electromagnetic wave, as shown in the table above? 5.3 Calculate the: 5.3.1 Frequency of wave E (4) 5.3.2 Wavelength of wave D (4) 5.4 Which wave, A or B, has the HIGHER penetrating ability? Give a (2) reason for the answer. [15] Page 8 of 12 Mogalakwena District

Downloaded from hlayiso.com Dowaleasted From Stanmore~hysics.com Term 1 Control Test QUESTION 6 6.1 A small, metal sphere A carrying a charge of +2 x 10°C is 6.2 placed on an insulated stand. @) +2x 10°C 6.1.1 How does the number of electrons compare with the number — (1) of protons in sphere A? Choose from LESS THAN, GREATER THAN or EQUAL TO 1013 electrons are now added to sphere A 6.1.2 Calculate the new charge on sphere A (4) Two identical metal spheres B and C placed on insulated stands, carry charges +4 x 10° C and -6 x 10° C respectively as shown in the O © The spheres are allowed to touch each other. diagram below. After touching the spheres are then separated and brought back to their original positions as shown in the diagram below. OO © 6.2.1 State the principle of conservation of charge. (2) 6.2.2. Calculate the number of electrons transferred between the two (6) spheres during contact. [13] Page 9 of 12 Mogalakwena District

Dowaleasted From Stanmore~hysics.com Downloaded from hlayiso.com QUESTION 7 Consider the circuit diagram below. Switch S is OPEN 7.1 Write down the reading on the following: 7.1.1 Voltmeter (V1) 7.1.2 © Ammeter (A:) Switch S is now CLOSED. 7.2 7.3 7.4 7.5 Calculate the equivalent resistance of the circuit. Calculate the reading on voltmeter V2. How do the readings on ammeters Az and As compare with each other? The graph below shows the relationship between the resistance and the length of the conducting wire. Page 10 of 12 Mogalakwena District Term 1 Control Test (1) (1) (4) (3) (1)

Downloaded from hlayiso.com Dowaleacted From Stanmore~hysics.com Term 1 Control Test 3,5 LL ° t t t t bs a & ° = a Resistance (Q) = o 2 a 0 10 20 30 40 50 60 70| Length of wire (mm) 7.5.1 Write down the relationship between the resistance and the (1) length of the conducting wire. 7.5.2 Determine the resistance of wire with a length of 30 mm. (2) GRAND TOTAL: 100 MARKS [13] Page 11 of 12 Mogalakwena District

Downloaded from hlayiso.com Dowaleasted From Stanmore~hysics.com Term 1 Control Test 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/SIMBOOL VALUE/WAARDE WAVES, SOUND AND LIGHT/GOLWE, KLANK EN LIG v=fa E=hf or/of E=h= AQ ELECTROSTATICS/ELEKTROSTATIKA Q=IAt R, R, Ra Ww R, =R,+Ro +... Vea Mogalakwena District Page 12 of 12

Downloaded from hlayiso.com m Stanmorephysics.com gece LIMPOPO PROVINCIAL GOVERNMENT REPUSLUC OF SOUTH AFRICA CEPARTMENT OF EDUCATION MOGALAKWENA DISTRICT PHYSICAL SCIENCES NATIONAL SENIOR CERTIFICATE TERM 1 CONTROL TEST 07 MARCH 2023 GRADE 10 MEMORANDUM MARKS : 100 DURATION: 2 hours STARTING TIME: 08H00 This question paper consists of 7 pages including this one Page 1 of 7 Mogalakwena District

Downloaded from hlayiso.com Dowaleasted From Stanmore~ahysics.com Term 1 Control Test QUESTION 1 1.4 Cv¥v 1.2 D¥vv 1.3 cvy 1.4 C¥v 1.5 AVY 1.6 BYY 1.7 D¥vv 1.8 D¥vv 1.9 AVY 1.10 C¥v [20] QUESTION 2 2.1 Superposition of pulses. Y Algebraic sum of the amplitudes of two (3) 2.2 2.3 2.4 2.5 pulses that occupy the same space at the same time. VW” (2) Both (A and B) ¥ Destructive (interference) VV (2) Amplitude = (+4) + (-6) (2) =-2cmvv (Marks: 2 or/of 0) REMAIN THE SAMEY (1) [10] Page 2 of 7 Mogalakwena District

Downloaded from hlayiso.com Dowaleasted From Stanmore~ahysics.com Term 1 Control Test QUESTION 3 3.1 Transverse ¥ (1) 3.2 1,25 mvv (2) 3.3 The distance between two consecutive points in phasevY¥ (2) OR The distance between two consecutive crests or two consecutive troughs. 3.4 A=3mV¥V¥V(1.5 m =0,5 wave) (3) 3.5 Any one of: A and C; E and G; B and F; D and H; F and J vw” (2) 3.6 4 crests implies 3 waves (3) 34%x05V=15sv (3 waves x 0,5 seconds per wave) 3.7 (4) Speed= awrence y_ | Positive meng from 3.4 “ue aes v Fr x) v 3Vv 1 = a = D5v “O05 V x88 =6m:s'¥ =6m-s'1¥ OR =(2¥x3Vv) =6m:s'¥ [17] Page 3 of 7 Mogalakwena District

Downloaded from hlayiso.com Dowaleasted From Stanmore~ahysics.com Term 1 Control Test QUESTION 4 41 (2) Marking guidelines If any of the underlined key words/phrases are omitted: minus 1 mark A wave in which the particles of the medium vibrate parallel to the direction of motion of the wave. VW 4.2 (4) OPTION 1 OPTION 2 yy -& At At AX Ax v=— Vv v=—_ 340 a 340 8 Ax =1360mv¥ Ax =2720m D=2720+2v =1360mvY Marking criteria AX ¢ Formula v=— v ¢ Substitute 340m:s'¥ Divide time or final distance by 2. W Final answer 1360m¥ 4.3 Frequency VW (2) 4.4 20KHzv¥ (2) 45 Diagnosis of medical condition/pregnancy. VW (2) [12] Page 4 of 7 Mogalakwena District

Downloaded from hlayiso.com Dowaleasted From Stanmore~ahysics.com Term 1 Control Test QUESTION 5 5.1 An oscillating electric field in one plane ¥ produces an (oscillating) (3) magnetic field Yat right angles/perpendicular to it. ¥ 5.2 The higher the frequency, the higher the energy of the wave. VW (2) OR Frequency is directly proportional to energy. VW” 5.3 5.3.1 E=hfv¥ (4) 4,97 x10“ =6,67x10 “fv f=7,5x10"Hz Vv 5.3.2 (4) OPTION 1 OPTION 2 c=fh v Fen ¥ 3x10°=(1,8%10'8)A v aa : 6,63x10~")(3x10 A=1,67%10 °mvv 1,8x19%= OSSNO Or) v A=1,67x10 °mv¥ 5.4 BY (2) Highest frequency/energyY [15] QUESTION 6 6.1 6.1.1 Less than ¥ (1) 6.1.2 n= Q (4) e 10%v=_9 _y -1,6*10° =-1,6x10 °C Q new = (-1,6 x 10 9) + (2x 10 49) ¥ =4x 10 CY Page 5 of 7 Mogalakwena District

Downloaded from hlayiso.com Dowaleasted From Stanmore~ahysics.com Term 1 Control Test 6.2 6.2.1 The net charge of an isolated system remains constant. VW (2) 6.2.2 Q,= a,= net V (6) 2 -6 -6 ~_ (4*x10")+(-6*10") v 2 =-1x10°C ¥ AQ n=— e _ (-6x10%+1x10%) v ~=1,6x10-19 ¥ =3,13x10"° electrons [13] QUESTION 7 7.1 711 Vi=24v (1) 7.1.2 Ar=O0(A)¥ (1) 7.2 (4) OPTION 1 OPTION 2 tl1it v _ product v Ry Ry Re P sum 11 -1,1 v =3t3 ¥ 8 8 R,=40 = 40 Rr=R.tR, Rr=R,+Rp =8+4 Vv =814 v =120 v 120 Page 6 of 7 Mogalakwena District

Downloaded from hlayiso.com Dowaleasted From Stanmore~ahysics.com Term 1 Control Test 7.3 (3) OPTION 1 V divide in a ratio 8 : 4 V (series) 8 jm! v Vo 72°24 =16V v OPTION 2 V=IR 24=1(12) I=2A V=IR ¥ =(2)(8) ¥ =16V_ Vv 74 Az=Aa.v% (1) 7.5 7.5.1 Resistance is directly proportional to the length of the (1) conducting wire. OR As the length of the wire increases, the resistance increases. 7.5.2 1,350 VV (Range: 1,3 Q to 1,4 Q) (2) [13] GRAND TOTAL: 100 MARKS Page 7 of 7 Mogalakwena District