NS TECH MG JUNE 2024

PROVINCIAL ASSESSMENT GRADE 6 NATURAL SCIENCES AND TECHNOLOGY JUNE 2024 MARKING GUIDELINES MARKS: 60 These marking guides consist of 4 pages. Copyright reserved Please turn over

NS & TECH 2 NW/June 2024 Grade 6 – Marking Guidelines QUESTION 1 ANSWER 1.1 1.1.1. B 1.1.2. B 1.1.3. C 1.1.4. D 4 1.2 1.2.1 Solution  1.2.2 Wetland  1.2.3 Filtering  1.2.4 Solvent  1.2.5 Pollution 5 1.3 1.3.1 Both A & B 1.3.2 A Only 1.3.3 A Only 6 [15] QUESTION 2 2.1 2.1.1 *2 Marks for a correct A drawing with particles correctly arranged. *No marks for word description of arrangement. *No 1 mark allocation  B  C 6  Copyright reserved Please turn over

NS & TECH 3 NW/June 2024 Grade 6 – Marking Guidelines 2.2 2.2.1 Mixture Method of separation 1. Peanuts and a) Hand sorting beans 2. Water and oil b) Decanting  3. Salt and c) evaporation/crystallization water 3 2.2.2 Salt and water.When heating the solution of saltwater the water will evaporate and leave the crystals of salt behind.  2 2.2.3 Insoluble 1 [12] QUESTION 3 3.1 3.1.1 Rubric Heading with two variables(stirring and dissolving) y-axis & x-axis  Drawing correct bar-graph, correct plotting of (no stirring and stirring)  *1 mark if correct bar graph is drawn but incorrect plotting THE EFFECT OF STIRRING ON RATE OF DISSOLVING 60 50 TIME IN SECONDS 40 30 20 10 0 NO STIRRING WITH STIRRING 4 3.1.2 a) Temperature b) Amount and grain size of sugar 2 [6] Copyright reserved Please turn over

NS & TECH 4 NW/June 2024 Grade 6 – Marking Guidelines QUESTION 4 4.1 4.1.1 To supply water to farms near the town of Brits 1 4.1.2 a) Water from mines 1 b) Waste from factories 1 c) Fertilisers 1 d) Human waste (plastics, sewers, cans, bottles)  (any 3 relevant answers) 4.1.3 From the farms nearby 1 4.1.4 The growth of algae plant contaminates the water so fish and frogs die. 2 4.2 4.2.1 a) They hold back water and release it slowly throughout the 2 year.  b) They are a habitat for plants and animals and provide them with food and a place to breed.  c) They filter water and ensure that its clean.  2 4.2.2 (any 2 relevant answer) a) Frogs  b) Fish c) Crocodile d) birds 2 (any 2 relevant answers) [13] QUESTION 5 5.1 5.1.1 To alert or warn people that the area has water that is not safe for human to consume.  2 5.1.2 a) Cholera b) Diarrhea c) Typhoid d) Polio 2 (any 2 relevant answers) 5.2.1 b) Filtering removes very tiny particles from the water 2 c) Chlorination kills any germs left in the water 2 5.2 5.2.2 The process of sieving only removes large materials, it does not kill germs. Water can still be contaminated even after sieving.  2 5.3 5.3.1 a) Put a funnel with a filter paper or cloth in an empty clean container b) Pour the water in the funnel to filter smaller bits and twigs c) Take the filtered water in the container and boil it for 15 minutes d) Allow the water to cool before use.  (any 4 relevant answers) 4 [14] TOTAL SECTION: 45 GRAND TOTAL: 60 Copyright reserved