Technical Sciences Grade 10 North West June 2019 Question Paper

Downloaded from hlayiso.com PROVINCIAL ASSESSMENT GRADE 10 TECHNICAL SCIENCES P1 JUNE 2019 MARKS: 100 TIME: 2 hours This question paper consists of 9 pages including 2 data sheets. Demo NW/JUNE/TEC-SCNE/ EMIS/6*******

Downloaded from hlayiso.com Technical Sciences/P1 2 NW/JUNE 2019 NSC – Grade 10 INSTRUCTIONS AND INFORMATION 1. This question paper consists of FIVE questions. Answer ALL the questions in the ANSWER SCRIPT. 2. Start EACH question on a NEW page. 3. Number the answers correctly according to the numbering system used in this question paper. 4. Leave ONE line between two sub-questions, for example between QUESTION 2.1 and QUESTION 2.2. 5. You may use a non-programmable calculator. 6. You may use appropriate mathematical instruments. 7. Show ALL formulae and substitutions in ALL calculations. 8. Round off your final numerical answers to a minimum of TWO decimal places. 9. Give brief motivations, discussions, etcetera where required. 10. Write neatly and legibly. Demo Copyright Reserved NW/JUNE/TEC-SCNE/ EMIS/6******* Please turn over

Downloaded from hlayiso.com Technical Sciences/P1 3 NW/JUNE 2019 NSC – Grade 10 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 a letter next to the question number, for example 1.5C. 1.1 Which one of the following physical quantities is a scalar? A Time B Velocity C Displacement D Acceleration (2) 1.2 Tension force exist when there is: A String B Cable C Rope D All of the above (2) 1.3 A diagram below shows all the forces that are acting on a certain object. Normal force Weight According to the diagram above, the force applied on an object is: A To the right B To the left C Zero D Equal to friction (2) 1.4 The product/s when hydrogen reacted with water is A H2O B H+O C HO2 D H2 + O2 (2) 1.5 The conversion of 1000 m in a scientific notation is A 1x103 m B 10x102 m C 0.1x10-3 m D 1x10-3 m (2) Demo Copyright Reserved NW/JUNE/TEC-SCNE/ EMIS/6******* Please turn over

Downloaded from hlayiso.com Technical Sciences/P1 4 NW/JUNE 2019 NSC – Grade 10 1.6 A stone from D was thrown to the top of the tank as shown in a diagram below. At what position is the magnitude of gravitational potential energy at minimum? B A C D A Position B B Position C C Position D D Position A (2) 1.7 Moment is also known as: A Force B Torque C Distance D Fulcrum (2) 1.8 Acceleration is: A The rate of velocity B The rate of distance C The rate of change in velocity D The rate of displacement (2) 1.9 The kinetic energy of the boy with a mass of 48 kg running at a speed Of 2.5m.s-1 will be: A 120 J B 150 J C 300 J D 60 J (2) Demo Copyright Reserved NW/JUNE/TEC-SCNE/ EMIS/6******* Please turn over

Downloaded from hlayiso.com Technical Sciences/P1 5 NW/JUNE 2019 NSC – Grade 10 1.10. Two forces of magnitude A = 220N and B = 200N were applied as shown in the diagram below. The resultant of these force is: 220 N 200N A 420 N left B 20 N left C 20 N right D 420 N right (2) [20] QUESTION 2 2.1 Convert the following physical quantities and show all workings. 2.1.1 830 C to Fahrenheit. (3) 2.1.2 500 g to kilograms (2) 2.1.3 65 min to seconds (2) 2.1.4 The standard notation of 0.00000165 m to scientific notation. (2) 2.2 If Shane covers a distance of 0.5 km at a speed of 2.52 m/s. Calculate the time he took to complete the 0.5 km distance. (4) 2.3 If a car is moving at a speed of 60 km/h then changes to 85 km/h in 0.02 hours. Calculate the acceleration of the car. (5) [18] QUESTION 3 3.1 Define pure substance. (2) 3.2 From the sketches below, choose: A B C Demo Copyright Reserved NW/JUNE/TEC-SCNE/ EMIS/6******* Please turn over

Downloaded from hlayiso.com Technical Sciences/P1 6 NW/JUNE 2019 NSC – Grade 10 3.2.1 Elements (1) 3.2.2 Compounds (2) 3.3 Consider the substances listed below. silicon; potassium; zinc; sodium; sulphur; fluorine; bromine; boron From the list above, write down the: 3.3.1 Metals (3) 3.3.2 Non-metals (3) 3.3.3 Metalloids (2) Demo Copyright Reserved NW/JUNE/TEC-SCNE/ EMIS/6******* Please turn over

Downloaded from hlayiso.com Technical Sciences/P1 7 NW/JUNE 2019 NSC – Grade 10 3.4 Write down the NAMES of compounds formed from the combination of elements given below and their symbol. 3.4.1 Carbon and chlorine (2) 3.4.2 Magnesium and oxygen (2) 3.4.3 Lead and sulphur (2) [19] QUESTION 4 4.1 Differentiate between kinetic energy and gravitational potential energy. (4) 4.2 Define mechanical energy. (2) 4.3 An object of mass 8.5 kg is held 0.4 m above the table which is 1 m high. When the object was dropped it moved with a speed of 2 m.s-1 at height of 0.9 m above the floor. 4.3.1 Calculate the gravitational potential energy of the object relative to the table. (3) 4.3.2 What is the gravitational potential energy of the object relative to the floor? (4) 4.3.3 Calculate the kinetic energy of an object at 0.9 m above the floor. (3) 4.3.4 What is the mechanical energy of the object at 0.9 m above the floor? (4) [20] QUESTION 5 5.1 State the law of moment in words. (2) 5.2 The weight of the block below is given as 200 N. 20 cm 200N Demo Copyright Reserved NW/JUNE/TEC-SCNE/ EMIS/6******* Please turn over

Downloaded from hlayiso.com Technical Sciences/P1 8 NW/JUNE 2019 NSC – Grade 10 5.2.1 Determine the moment and write the direction. (4) 5.2.2 If another block with a weight of 300 N is put on the other side at the same distance. What is going to happen to a 200 N block? Take a guess and then prove it using calculation. (5) 5.3 The uniform beam in the diagram below is balanced when no loads are on it. The uniform beam weighs 100 N. Calculate the force F that must be applied to keep the beam in equilibrium, when a 400 N load is placed 3 m to the right as shown in the diagram below. (4) 2m 3m F 100 N 400 N 5.4 Define mechanical advantage. (2) 5.5 If the length of the effort arm is 0.8 m and the load arm is 1.6 m. determine the mechanical advantage of the lever. (3) 5.6 If a load of 800 N is moved by a lever with a mechanical advantage of 1.5. What is the effort? (3) [23] GRAND TOTAL: 100 TABLE 1: PHYSICAL CONSTANTS NAME SYMBOL VALUE Acceleration due to g 9.8 m.s-2 gravity Charge on electron e -1,6 × 10-19 Demo Copyright Reserved NW/JUNE/TEC-SCNE/ EMIS/6******* Please turn over

Downloaded from hlayiso.com Technical Sciences/P1 9 NW/JUNE 2019 NSC – Grade 10 TABLE 2: FORMULEA MOTION ENERGY Speed = distance/ time Ep = mgh or U = mgh Velocity = displacement/ time Ek = mv2 Acceleration = change in velocity/ time ME = Ep + Ek FORCE MOMENTS Fg =mg Moment = F× d OR Fres = F1 + F2 Torque = F × d SIMPLE MACHINES MA = OR MA = Demo Copyright Reserved NW/JUNE/TEC-SCNE/ EMIS/6******* Please turn over

Downloaded from hlayiso.com Technical Sciences/P1 10 NW/JUNE 2019 NSC – Grade 10 Demo Copyright Reserved NW/JUNE/TEC-SCNE/ EMIS/6******* Please turn over