Physical Sciences Grade 10 P1 Gauteng June 2019 Memo (English)

Downloaded from hlayiso.com GAUTENG DEPARTMENT OF EDUCATION PROVINCIAL EXAMINATION JUNE 2019 GRADE 10 PHYSICAL SCIENCES PAPER 1 MARKING GUIDELINE 6 pages

Downloaded from hlayiso.com PHYSICAL SCIENCES MARKING GUIDELINE (Paper 1) GR 10 GAUTENG DEPARTMENT OF EDUCATION PROVINCIAL EXAMINATION PHYSICAL SCIENCES (Paper 1) MARKING GUIDELINE QUESTION 1: MULTIPLE CHOICE QUESTIONS 1.1 C  1.2 A  1.3 A  1.4 C  1.5 C  1.6 B  1.7 C  1.8 D  1.9 A  1.10 C  [20] 2

Downloaded from hlayiso.com PHYSICAL SCIENCES MARKING GUIDELINE (Paper 1) GR 10 QUESTION 2 2.1 2.1.1 The distance between two consecutive / successive points in phase.  (2) 2.1.2  for x and y axes  for the correct waves shape Position(m) a+b  time (s) (4) 2.1.3 (Constructive) interference / superposition  (2) 2.1.4 When two waves meet at a point, the resultant disturbance is the algebraic sum of the two waves.  (2) 2.2 2.2.1 The time taken to complete a single oscillation.  (2) 2.2.2 Downwards  2.3 2.3.1 (4) 2.3.2  (4) [22] 3

Downloaded from hlayiso.com PHYSICAL SCIENCES MARKING GUIDELINE (Paper 1) GR 10 QUESTION 3 3.1 A single disturbance that occurs in a medium.  (2) 3.2 3.2.1 Wavelength  (1) 3.2.2 Compression  (1) 3.3 3.3.1 v = f  342= f (9/1000)  f = 38 000 Hz = 38 kHz  38 kHz > 20 kHz  humans cannot hear this sound. (5) 3.3.2 ultrasound  (1) 3.4 Distance from device to building B s = v x t = 340 x 0,75  (1, 5  2 ) = 255 m Distance from device to building A s = 340 x 0,5  (1/2) = 170 m Distance between two buildings :255 + 170 = 425 m (6) [16] QUESTION 4 4.1 4.1.1 Radio and TV broadcast / Communication / Locating information about our universe.  ANY ONE (1) 4.1.2 = h.f  E= ( )  E= J  (4) 4

Downloaded from hlayiso.com PHYSICAL SCIENCES MARKING GUIDELINE (Paper 1) GR 10 4.2 4.2.1 3,0 x 108 m·sˉ1  (1) 4.2.2 (4) 4.3 They are a high-frequency / energy type of electromagnetic radiation with a relatively high penetrating ability.  (2) [12] QUESTION 5 5.1 5.1.1 The spheres are carrying opposite charges and will attract each other (2) 5.1.2 Sphere A  (1) 5.2 5.2.1 (3) 5.2.2 Repulsion, the spheres are now carrying the same charge, they are both positively / like charged and they repel each other since like charges repel. (2) 5.2.3 Every charge in the universe is a scalar multiple of the charge of a single electron.  (2) 5.2.4 n=  n=  OR n=  n= electrons  (4) [14] 5

Downloaded from hlayiso.com PHYSICAL SCIENCES MARKING GUIDELINE (Paper 1) GR 10 QUESTION 6 6.1 6.1.1 The voltage across the terminals of a battery / cell when no current is flowing.  ACCEPT The maximum energy that a battery / cell can dissipate per coulomb of charge.  (2) 6.1.2 (3) 6.1.3 (2) 6.2 6.2.1 (3) 6.2.2 (2) 6.2.3 0,2 A , the current flowing through resistors in series is the same.  (2) 6.3 (3) [17] TOTAL: 100 6