Gr10 Phy P1 (English and Afrikaans) June 2017 Possible Answers_hlayiso.com_.pdf

Downloaded from hlayiso.com GAUTENG DEPARTMENT OF EDUCATION GAUTENGSE DEPARTEMENT VAN ONDERWYS PROVINCIAL EXAMINATION PROVINSIALE EKSAMEN JUNE / JUNIE 2017 GRADE / GRAAD 10 PHYSICAL SCIENCES FISIESE WETENSKAPPE PAPER / VRAESTEL 1 MEMORANDUM 8 pages / bladsye 1

Downloaded from hlayiso.com PHYSICAL SCIENCES MEMORANDUM (PAPER 1) GRADE 10 GAUTENG DEPARTMENT OF EDUCATION GAUTENGSE DEPARTEMENT VAN ONDERWYS PROVINCIAL EXAMINATION PROVINSIALE EKSAMEN PHYSICAL SCIENCES / FISIESE WETENSKAPPE (Paper / Vraestel 1) QUESTION / VRAAG 1 1.1 A √√ 1.2 C √√ 1.3 C √√ 1.4 D √√ 1.5 B √√ 1.6 B √√ 1.7 D √√ 1.8 C √√ 1.9 D √√ 1.10 B √√ [20] 2

Downloaded from hlayiso.com PHYSICAL SCIENCES MEMORANDUM (PAPER 1) GRADE 10 QUESTION / VRAAG 2 2.1 Transverse / Transversale √ (1) 2.2 The direction of wave motion is perpendicular to direction of medium. / Die beweging van die golf is loodreg tot die medium √√ (2) 2.3 5√ (1) 2.4 2.4.1 a and b √ / a en b √ (2) 2.4.2 a and c √ / b and d √ / a en c / b en d (2) 2.4.3 ab √ (1) 2.5 amplitude = 2,5 ÷ 2 = 1.25 m √√ (2) 2.6 Period / Periode = 4÷6 0.67 s √√ (2) 2.7 f = 1/T = 1/0.67 = 1.493 Hz √√ (2) 2.8 v=fxʎ√ = 1.493 ×10 √ = 14.93 m.s -1 √ OR / OF = 15 m.s-1 (3) [18] 3

Downloaded from hlayiso.com PHYSICAL SCIENCES MEMORANDUM (PAPER 1) GRADE 10 QUESTION / VRAAG 3 3.1 A photon is a packet of energy/ quantum of energy./ ʼn Foton is ʼn kwantum van energie. √√ (2) 3.2 Electromagnetic waves are propagated when accelerating charges √ move perpendicular to the direction of propagation therefore induces a magnetic field √ resulting in an electromagnetic wave. √ / Versnellende elektriese lading wat in ʼn reguit lyn deur ʼn magnetiese veld beweeg. Die versnelling van hierdie elektriese lading versteur die elektriese en magnetiese velde rondom dit, wat veroorsaak dat hierdie velde ossileer en elektro-magnetiese straling produseer. (3) 3.3 3.3.1 Ultraviolet (radiation) / Ultraviolet lig √ (1) 3.3.2 Infra-red (radiation) / Infrarooi √ (1) 3.3.3 Gamma rays / Gamma-straler √ (1) 3.3.4 Radio waves / Radiogolwe √ (1) 3.4 3.4.1 X rays have a high penetrating ability compared to ultraviolet radiation √, therefore ultraviolet rays are less harmful to a foetus than x-rays. √ / X-strale het hoë penetreringsvermoë en is skadelik vir die baba. Ultraklank is minder skadelik. (2) 3.4.2 hc E √  (6,63 x10 34 )(3 x10 8 ) E √ (3,2 x 10  9) √ E = 6,42 x 10-17 J √ (3) [14] 4

Downloaded from hlayiso.com PHYSICAL SCIENCES MEMORANDUM (PAPER 1) GRADE 10 QUESTION / VRAAG 4 4.1 A magnetic field is any area in which a magnetic substance will experience a force. / Dit is die ruimte waar ʼn magneet / ʼn voorwerp gemaak van ʼn magnetiese stof ʼn krag sal ondervind. √√ (2) 4.2 Cobalt and nickel / kobalt en nikkel √√ (2) 4.3 N S N S (4) 4.4 4.4.1 Remains the same / Bly dieselfde √√ (2) 4.4.2 Increases / Verminder √√ (2) [12] 5

Downloaded from hlayiso.com PHYSICAL SCIENCES MEMORANDUM (PAPER 1) GRADE 10 QUESTION / VRAAG 5 5.1 The nett amount of charge in an isolated system remains constant. / Die netto lading in ʼn geslote stelsel bly konstant gedurende enige fisiese proses. √√ (2) 5.2 Opposite charges attract each other. / Teenoorgestelde ladings trek mekaar aan. √√ (2) 5.3 Q1  Q2 Q √ 2 (5nC  (2nC) (5x10 9 )  (2 x10 9 ) Q √ OR / OF Q √ 2 2 Q =-1,5 nC √ Q=-1,5 x 10-9C √ (3) 5.4 X to Y. / X na Y. √ X has an excess of electrons√ therefore electrons move to Y that has a deficiency of electrons. / X het ʼn oormaat elektrone en dus sal dit na Y beweeg wat ʼn tekort van elektrone het. √ (3) 5.5 5.5.1 Increase / Verhoog √√ (2) 5.5.2 Increase / Verhoog √√ (2) [14] 6

Downloaded from hlayiso.com PHYSICAL SCIENCES MEMORANDUM (PAPER 1) GRADE 10 QUESTION / VRAAG 6 6.1 To determine if the effective resistance is greater when resistors are connected as potential dividers than when they are connected in parallel.√√ / Om te bepaal of resistors wat as potensiaalverdelers gekoppel is, se weerstand groter is as dié wat parallel geskakel is. (2) 6.2 √ Voltmeter correctly V connected across 3 cells √ 3 cells √ Ammeter connected correctly √ Two resistors in series √ Two voltmeters connected correctly across two resistors √ Voltmeter oor 3 selle A √ 3 selle √ Ammeter korrek √ Twee resistors in series 6Ω 12Ω √ Twee voltmeters oor 2 resistors V V (5) 6.3 6.3.1 A: RT = R1 + R2√ =3+3 = 6Ω √ B: RT = R1 + R2 = 3 + 1,7 √ = 4,7Ω √ (4) 6.3.2 Option 1 / Opsie 1 Option 2 / Opsie 2 V=IR √ VT = V1 = V2 √ VC= (0,75)(3) = 2,25V √ V2C =4,5 – 2,25 = 2,25V √ VD= (0,96)(3) = 2,87V √ V2D = 4,5 – 1,63 = 2,87V √ (3) 6.3.3 Experiment / Eksperiment 1: V1 +V2 = 2,25 + 2,2,5 = 4,5V √ Experiment / Eksperiment 2: V1 +V2 = 2,87+1,63 = 4,5V √ Thus resistors in series are potential dividers. / Resistors is in series en dus potensiaalverdelers. √ (5) 7

Downloaded from hlayiso.com PHYSICAL SCIENCES MEMORANDUM (PAPER 1) GRADE 10 6.4 Increases √ Current is proportional to resistance. √ As the resistors are connected in parallel, resistance decreases √ therefore current V increases i.e. I  . R Toeneem √ Elektriese stroom is proporsioneel tot weerstand √ Indien die resistors parallel geskakel is, verminder die weerstand √ dus – vergroot die V stroom: I  . R (3) [22] TOTAL / TOTAAL: 100 8