LP-Physical-Sciences-Grade-10-March-2025-QP-and-Memo.pdf

Testpapers.co.za LIM POP©® PROVINCIAL GOVERNMENT REPUBLIC OF SOUTH AFRICA MARKS: 100 TIME: 2 hours DEPARTMENT OF EDUCATION NATIONAL SENIOR CERTIFICATE ly GRADE 10 This question paper consists of 12 pages and 2 data sheets.

Testpapers.co.za Limpopo DoE/March 2025 "NSC INSTRUCTIONS AND INFORMATION: Read the following instructions carefully before answering the questions. Write your name and surname on the ANSWER BOOK. This question paper consists of 7 questions. Answer ALL the questions in the ANSWER BOOK Start EACH question on.a,NEW page Number the answers rectly, te in the ANSWER BOOK. ding to the numbering system used in this question paper. Leave ONE line betw and QUESTION 2.2. You may use a non-programmable calculator. ub-questions, e.g. between QUESTION 2.1 You may use appropriate mathematical instruments. You may use appropriate mathematical instruments. Round off your FINAL numerical answers to a minimum of TWO decimal places. Give brief motivations, discussions, etc. where required. You are advised to use the attached DATA SHEETS. Write neatly and legibly Copyright reserved Please turn over

Testpapers.co.za Limpopo DoE/March 2025 "NSC QUESTION 1: MULTIPLE CHOICE QUESTIONS Four options are provided as possible answers to the following questions. Each question has only ONE correct answer. Write down only the letter (A — D) next to question number (1.1 — 1.7) in the answer book. For example, 1.10 D 1.1. The frequency of a wave is defined as the... A. B Cc. D Lowest point on a wave Time taken forone complete wave) Number of complete waves per second Number of points in phase in a wavelength (2) y 3 , 1.2. When two waves’ crests overlap, the increase in amplitude is due to... a A. B Cc. D Cancellation Two waves in phase Destructive interference Constructive interference (2) 1.3. A tuning fork is made to vibrate by striking it gently on a rubber stopper. The sound waves produced are... A. B. C. D Transverse waves and requires a medium of propagation Transverse wave and do not require a medium of propagation Longitudinal waves and requires a medium of propagation Longitudinal waves and do not require a medium for propagation (2) 1.4. A wave in which the particles of the medium vibrate at right angles to the path which the wave travels through the medium, is produced by... A. B. C. D a bat. a car's hooter. an ambulance. an X -ray machine. (2) Copyright reserved Please turn over

1.5. Which ONE of the graphs below best describes the relationship betwe the amplitude of a wave? ‘ Testpapers.co.za Limpopo DoE/March 2025 "NSC ness and A ny 2 3 . Amplitude (m)“ | n Amplitude (m) Amplitude (m) (2) 1.6. A negative charged plasti it close to, but does not touch a small piece Vahs of paper. If the comb ai charge on the paper was. A. B. Cc. D Ow attracted to each other, then the original positive only. negative only. negative or neutral. positive or neutral. (2) Two identical spheres A and B placed on insulated stands, carry charges of +2uC and +6uC, respectively as shown below +2uC (8) +6yuC In which direction do electrons move when the spheres are brought into contact*? A. From A to B B. From B toA C. No movement as both spheres are positively charged D. No movement, electrons remain in A (2) [14] Copyright reserved Please turn over

Testpapers.co.za Limpopo DoE/March 2025 "NSC QUESTION 2 (Start on a new page) 2.1. Define the term pulse. (2) 2.2. The diagram below shows two pulses L and M, travelling in opposite directions in a rope. The amplitude of pulse L is UNKNOWN and that of pulse M is 7 cm. Note: diagrams are not to scale. The two pulses meet at point X and the resulting amplitude is as shown below. 4 Scr, 2.2.1. What type of interference takes place at point X? (1) 2.2.2. Define the type of interference mentioned in QUESTION 2.2.1. (2) 2.2.3. Determine the amplitude of pulse L. (2) 2.2.4. In which direction does pulse M move after the two pulses pass each other? Write either TO THE RIGHT or TO THE LEFT. (1) Copyright reserved Please turn over

Testpapers.co.za Limpopo DoE/March 2025 "NSC 2.3. The frequency of a point source is 50 Hz and the speed of the water waves is 20 m-s7. 2.3.1, Calculate the wavelength of the waves. (3) 2.3.2. The amplitude of the vibrations is doubled. 2.3.2.1. How does this affect the frequency of the vibration? (1) 2.3.2.2 | How does this affect the wavelength of the waves through the water? (1) 2.3.2.3 Briefly explain your answer to QUESTION 2.3.2.1. (1) [14] Copyright reserved Please turn over

Testpapers.co.za Limpopo DoE/March 2025 "NSC QUESTION 3 (Start on a new page) 3.1. A transverse wave is travelling along a string. A point on the medium carrying the wave was observed. A graph of distance versus time of the point is shown. The distance between two consecutive troughs is 21 cm. = 5 a t= 6 0 iv] 3 a 3.1.1. Define the term period of a wave. (2) 3.1.2. Calculate the frequency of this wave. (3) 3.1.3. Calculate the speed of this wave. (3) 3.1.4. If the wave speed calculated in QUESTION 3.1.3. is kept constant and the frequency is doubled, what happens to the wavelength? Choose from HALVED, DOUBLED or REMAINS THE SAME. (1) 3.1.5. Explain your answer to QUESTION 3.1.4. (3) 3.2. Ships and boats can determine the depth of the water beneath them using an “echo- sounding” method known as ultrasound. 3.2.1. Define the term ultrasound. (2) 3.2.2. Ships transmit a sound wave which is reflected off the seabed. Explain why the reflected sound is softer than the original sound. (2) 3.2.3. Name ONE animal that uses ultrasound when navigating through its natural habitat. (1) [17] Copyright reserved Please turn over

Testpapers.co.za Limpopo DoE/March 2025 "NSC QUESTION 4 (Start on a new page) The diagram shows a longitudinal wave produced from a musical instrument. 4.1. 4.2. 4.3. 44, Wave Propagation i the parts marked: TTT Define a longitudinal wa’ ¢ Write down the name an 4.2.1. U 4.2.2. V a Describe the motion of the particle at point U as the wave propagates to the right. T and V are two points that are in phase and the distance between them is 5 cm. Wave particles at point U make 410 vibrations in 2 seconds. Calculate the: 4.4.1. Frequency of the wave. 4.4.2. Speed of the wave particles. Copyright reserved Please turn over (2) (3) (3) (2) (3) (3) [16]

Testpapers.co.za "NSC QUESTION 5 (Start on a new page) They performed the experimet recorded their findings in the ta’ TEMPERATURE (°C) TIME(s) 0 0,151 5 0,150 10 0,148 15 0,147 20 0,146 25 0,145 5.1. For the investigation write down the: 5.1.1. Investigation question 5.1.2. Independent variable 5.1.3. Dependent variable 5.2. Calculate the speed of sound at 20 °C 5.3. Write down a conclusion for the investigation. Limpopo DoE/March 2025 The person who beats the drum, noticed that the sound reflected back after a while. 5.4. Name the term used to describe the reflection of sound waves. Copyright reserved Please turn over peratures during different times of the day. They (2) (1) (1) (3) (2) (1) [10]

Testpapers.co.za Limpopo DoE/March 2025 "NSC QUESTION 6 (Start on a new page) The electromagnetic spectrum includes amongst others, radio waves, ultraviolet light, gamma rays, visible rays and x — rays. 6.1. List ONE property of all electromagnetic waves. (1) 6.2. Briefly explain what is meant by the DUAL nature of electromagnetic radiation. (2) 6.3. Radio stations broadcast to listeners by means of electromagnetic radiations called radio waves. i Listed below is information about TWO different radio stations: Radion Station 1 — broadcasts aba frequency of 97,60 MHz Radion Station 2 — broadcast at a wavelength of 1, 50 x 10m 6.3.1. What is a photon? . (2) 6.3.2. Calculate the energy of a photon associated with radio station 1. (3) 6.3.3. The owner of radio station 2 claims that his transmitter operates at a frequency of 2 MHz. Use a calculation to help explain why his claim is INCORRECT. (4) 6.3.4. How will the energy of a photon transmitted from radio station 2 be affected if its wavelength was decreased? Choose from INCREASES, DECREASES or REMAINS THE SAME. (1) [13] Copyright reserved Please turn over

Testpapers.co.za Limpopo DoE/March 2025 "NSC QUESTION 7 7.1. Aglass ball stands on an insulated stand and is made positively charged by rubbing it with a woollen cloth. 7.1.1. Explain the term tril ging. (2) between the glass ball and the woollen cloth. (2) 7.1.3. A learner now hangs a polys 1@ ball, marked B, by a thin piece of string near the glass ball. The polystyrene ball B experiences a force to the right as shown 7.1.2. Describe the mov below. Is ball B POSITIVE What happens to ball C? Write only MOVE TO THE LEFT, MOVE TO THE RIGHT or REMAINS STATIONARY? (1) Copyright reserved Please turn over

Testpapers.co.za Limpopo DoE/March 2025 "NSC 7.2. Xand_Y are now identical spheres mounted on insulated stands that are close to each other. The charge on X is — 3 uC while the charge on Y is unknown. xX Y Before contact ! 7.2.1. Calculate the number of excess electrons on sphere X. (3) 7.2.2. State the principle of conservation of charge. (2) X is now brought into contact with Y for a moment and the spheres are then placed back at their original positions. La After contact The charge on both X and Y is now — 0,5 pC. 7.2.3. Calculate the original charge of sphere Y. Show all workings. 7.2.4 Did Y LOOSE or GAIN electrons? (3) (1) TOTAL MARKS: 100 Copyright reserved Please turn over

Testpapers.co.za Limpopo DoE/March 2025 "NSC 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 po sate of light in a - pawn Planck ce kona h 6,63 x 10 J-s tae al e -1,6 x 10°C pore Me 9,11 x 10°" kg TABLE 2: FORMULAE/TABEL 2: FORMULES MOTION/BEWEGING v, =v, +aAt Ax = v,At + Laat? vy +V\ v2 =v}? +2aax AX = ( = a Copyright reserved Please turn over

Testpapers.co.za Limpopo DoE/March 2025 "NSC WORK, ENERGY AND POWER/ARBEID, ENERGIE EN DRYWING U=mgh orlof E,=mgh 1 1 K=—mv E, =—mv 2 orlof Ex 2 En = Ext Ep. orlof Ey=K+U WAVES, SOUND AND LIGHT/GOLWE, an Sa KLANK EN LIG 1 v=fir T=- f c E=hf orlof E= hy ELECTROSTATI ante a Q,+Q, e 2 ELECTRIC CIRCUITS/ELEKTRIESE STROOMBANE Q=IAt R, =R, +R, +... Copyright reserved Please turn over

Testpapers.co.za LIMPOPO PROVINCIAL GOVERNMENT REPUBLIC OF SOUTH AFRICA DEPARTMENT OF EDUCATION NATIONAL SENIOR CERTIFICATE MARKS/PUNTE: 100 TIME/TYD: 2 hours/ure This marking guidelines consists of 7 pages/ Hierdie nasienriglyne bestaan uit 7 bladsye

Testpapers.co.za | Limpopo DoE/March 2025 NSC/NSS — Marking Guidelines/Nasienriglyne QUESTION 1/VRAAG 1 11. Cvv 1.2. Dvv 13. Cvv 1.4. Dvv 1.5. AVY 16. Dvv 17. BYY [14] a_medium. Vv/ Puls is 'n_enkele (2) / Destruktiewe interferensie (1) 2.2.2. Two pulses meet at a point and sum up to no pulse or smaller pulses. VY / Twee pulse ontmoet op 'n punt en tel op tot geen puls of kleiner pulse (2) 2.2.3. Amplitude of pulse L/amplitude van puls L + (-7 cm) = - 4 cm¥ Amplitude of pulse L/amplitude van puls L = 3 cmv (2) 2.2.4. TO THE LEFTY/NA LINKS (1) (3) (1) /Dieselfde (1) in amplitude influences the energy of the > number of waves that pass a fix point in one secondv /Verandering in amplitude beinvloed die energie van die deeltjies en nie die aantal golwe wat 'n vaste punt in een sekonde verbygaan nie. (1) [14] Copyright reserved/Kopiereg voorbehou Please turn over/Blaai om asb

Testpapers.co.za | Limpopo DoE/March 2025 NSC/NSS — Marking Guidelines/Nasienriglyne QUESTION 3 3.1.1. Time taken for one complete wave to pass a fix point. vv /Tyd wat dit neem vir een volledige golf om by ‘n vaste punt verby te beweeg. (2) SMNAA~E+t fairy 4 0,06 = 16,67 Hz Vv OR/OF 3 waves in 0,18 sv golwe in X waves in 1 = 1/ a f= 16,67 sv (3) é B13.Vaf xav i _— = | = 16.67 x0,21V =3,50ms tv (3) 3.1.4. Halved V/Halveer (1) 3.1.5. Negative Marking from 3.1.4/Negatiewe nasien vanaf 3.1.4 e Using/gebruik V=f x A v e If frequency is doubled then wavelength must be halvedv/ As frekwensie verdubbel word, moet golflengte gehalveer word e In order to keep speed constant“/ Om spoed konstant te hou (3) 3.1.1. Sound with a frequency range of between 20 kHz to 100 kHzv v/ Klank met 'n frekwensiereeks van tussen 20 kHz tot 100 kHz (2) 3.1.2. Part of the sound is absorbed by the seabedv v/ ’n Deel van die klank word deur die seebodem geabsorbeer (2) 3.1.3. Bat Y or Dolphins ¥/Vlermuis of dolfyne (1) [17] Copyright reserved/Kopiereg voorbehou Please turn over/Blaai om asb

Testpapers.co.za | Limpopo DoE/March 2025 NSC/NSS — Marking Guidelines/Nasienriglyne QUESTION 4/VRAAG 4 4.1. A pulse in which the disturbance of particles in parallel to the direction of propagation. “ v/ 'n Puls waarin die versteuring van deeltjies parallel is met die voortplantingsrigting. (2) 4.2. 4.2.1. RarefactionY/Verdunning The region of low pressure in a longitudinal wavev v /Die gebied van lae druk in 'n longitudinale golf (3) in a longitudinal wave v v/ Die longitudinale golf (3) 4.3. ckward. (parallel to direction of ) eeg vorentoe en agtertoe. (parallel met voortplantingsrigting, (2) 4.4. 441. faiv f= = v = 205 Hz v¥ f (3) 44.2. v=f xdv v= 205 x 0,05 Vv v=10,25ms tv (3) [16] Copyright reserved/Kopiereg voorbehou Please turn over/Blaai om asb

Testpapers.co.za | Limpopo DoE/March 2025 NSC/NSS — Marking Guidelines/Nasienriglyne QUESTION 5/VRAAG 5 5.1.1. How does the change/increase in temperature affect the speed of sound in air? v Y/ Hoe beinvioed die verandering/toename in temperatuur die spoed van klank in lug? (2) 5.1.2. Temperature “/Temperatuur (1) 5.1.3. Speed of sound in air/Spoed van klank in lug (1) _— 5.2. speed = (3) 5.3. As the temperature increases, the speed of sound also increases. Vv ¥ / Soos die temperatuur toeneem, neem die spoed van klank ook toe (2) 5.4. Echo v/Eggo (1) [10] Copyright reserved/Kopiereg voorbehou Please turn over/Blaai om asb

Testpapers.co.za | Limpopo DoE/March 2025 NSC/NSS — Marking Guidelines/Nasienriglyne QUESTION 6/VRAAG 6 6.1. e Some of its behavior is explained using wave model v/ Sommige van sy gedrag word met behulp van golfmodel verduidelik e While other aspects of its behavior are explained using the particle model. “/ Terwyl ander aspekte van sy gedrag (2) verduidelik word deur die deeltjiemodel te gebruik 6.2. 6.2.1. Photo ‘gy found in light. “~ “/ Fotone is (2) evind word. 6.2.2. E=hfv | (3) =3 x 10°m.s7! #3 x 108) V (4) 6.2.4. Increases V/Neem toe (1) [13] Copyright reserved/Kopiereg voorbehou Please turn over/Blaai om asb

Testpapers.co.za | Limpopo DoE/March 2025 NSC/NSS — Marking Guidelines/Nasienriglyne QUESTION 7/VRAAG 7 7.1.1. Certain materials become electrically charged after they come into contact with different materials. ¥“/ Sekere materiale word eleKktries (2) gelaai nadat hulle met verskillende materiale in aanraking kom 7.7.2: e Electrons movev /elektrone beweeg ¢ From the glass ball into the cloth” /vanaf die glas bal na die lap (2) 7.1.3. Positively chargedv /positief gelaai (1) 7.1.4. To the lefty /na link _ ff (1) RIA: 9 Sis an? _ _-3 x1076 ~ =1,6 x10719 = 1,88 x 103 v (3) 7.2.2. The net charge on an isolated system remains constantY v/Die netto lading in ‘n geisoleerde sisteem bly konstant (2) 2. gp Sty 2 Osv ny : 2 Qy = +2yC v (4) 7.2.4. Gain “/bygekry of opgeneem (1) [16] TOTAL MARKS/TOTALE PUNTE = 100 Copyright reserved/Kopiereg voorbehou