Grade 5 Natural Sciences Mid Year Examination 2021

Blouberg Ridge Primary School Natural Sciences and Technology NOM? 0.0... eeeesseeseeeessescevoncaes BLOUBERG RIDGE PRIMARY SCHOOL, Date: 30 June 2021 Examiner: J. Bauer Task 4: Test = Marker and date: ............... Grade 5 B/ E/ M/ S/T Time allocation: hour Question 1: Circle the correct answer. 1.1} A metal that is attracted to a magnet has... a) Magic properties b) Magnetic properties c) Magnetic energy d) Magnetic forces 1.2) Why is gold offen used for making jewellery? Q) It is malleable b) It is the right colour c) It is easy to find d) It is a common metal 1.3) What is an alloy a) A substance that is likely to break or crack. b) Metal coated by another metal. c) A pure substance which cannot be broken down further d) Two or more metals mixed together, or a metal mixed with a non-metal. 1.4) Metals are ductile. What does ductile mean? a) It can be drawn into wire b) It is able to bend without breaking c) It is a bad conductor of heat d) One metal covered with another metal 1.5) Why is copper used for electric wires? Q) It is an alloy. b) It is malleable. C) It is a good conductor of electricity. d) It cannot be used for anything else. lof 4 Moderator: ....4.694—<. esses Total: /40 | [5] Total: /5

Question 2: [5] Match the key word in column A with the correct definition in column B. Write the correct letter in the blocks below the table. 2.1) Paint a) a dry, coloured powder that is mixed with oil or water to make paint. 2.2) Fabric b) a liquid used to give colour or texture or protect surfaces and objects. 2.3) Plaster of Paris c) material made from yarn or fibres by weaving or knitting. 2.4) Pigment d) a material that is not easily damaged by fire. 2.5) Fire-resistant e) a white powder that quickly becomes a hard solid when mixed with water. f) a material that is not easily damaged by heat. 2.1) 2.3) 2.4) 2.5) Question 3: 3.1) Mention one metal which rusts. [5] (1) 3.2) How does rusting occur to the metal mentioned in question 3.1 2 {1) 3.3) You see a man painting a metal fence to prevent it from rusting. Identify three other methods of preventing metals from rusting. (3) 20f4 Total: /10

Question 4: [3] Use your knowledge of different metals and write down which metal is used to make the items below. A crane for lifting boxes onto a ship: A helicopter: A necklace: Question 5: Think about the process of making jelly. To make jelly, you will need a packet of jelly powder, hot and cold water. Using the word box, fill in the missing words to write about this process. different raw cooling the same drying and firing mixing and cooling liquid gas cooking Making jelly uses the 5.1) process. The new mixture will have 5.2) properties from the 5.3) materials. The jelly powder was solid, but it became a 5.4} when water was added. After 5.5) it changed into a solid again. Question 6: [5] Determine whether the following statements are true or false. If false, rewrite the statement so that it becomes true. 61) Xhosa rondavels have roofs that are made of mud and clay. 6.2) Weaving is the process of rolling material into a spiral shape. 6.3} Stitching is the process of using thread to sew or join two materials together. 6.4) The Nama Matjiehuis is made of grass mats. 6.5) Plant fibres are used to weave, stitch and plait. An example of a plant fibre is animal hair. Total: 13 3 0f 4 ora /

Question 7: [5] 7.1) What does it mean if a metal is magnetic? (1) 7.2) Mention three metals that are magnetic. (3) 7.3) Look at the pictures below and determine which of the objects will be attracted to a magnet. Circle your answer. (1) A- Plastic as ruler C- Aluminium pencil — B- Iron sharpener D- Fabric nail sports jersey Question 8: [7] 8.1} Look at the table below and provide one use for the processed materials listed. (4) Plaster of Paris a) Concrete b) Fabrics c) Ceramics d) 8.2) Give one reason why people use glass fo make windows. (1) 8.3) Identify one natural fibre. (1) 8.4) Plastics are used for containers and lunchboxes. Mention one property of plastics that make them good products. (1) Aof4 Total: /12